Academic Appointments


2023-24 Courses


Stanford Advisees


All Publications


  • Uniting the Sun's Hale magnetic cycle and "extended solar cycle" paradigms FRONTIERS IN ASTRONOMY AND SPACE SCIENCES McIntosh, S. W., Scherrer, P. H., Svalgaard, L., Leamon, R. J. 2022; 9
  • Solar Toroidal Field Evolution Spanning Four Sunspot Cycles Seen by the Wilcox Solar Observatory, the Solar and Heliospheric Observatory/Michelson Doppler Imager, and the Solar Dynamics Observatory/Helioseismic and Magnetic Imager ASTROPHYSICAL JOURNAL LETTERS Liu, A. L., Scherrer, P. H. 2022; 927 (1)
  • A Method for the Estimation of f- and p-mode Parameters and Rotational Splitting Coefficients from Un-averaged Solar Oscillation Power Spectra ASTROPHYSICAL JOURNAL Reiter, J., Rhodes, E. J., Kosovichev, A. G., Scherrer, P. H., Larson, T. P., Pinkerton, S. F. 2020; 894 (1)
  • A Critical Evaluation of Recent Claims Concerning Solar Rotation ASTROPHYSICAL JOURNAL Scherrer, P. H., Gough, D. O. 2019; 877 (1)
  • Statistical Analysis of Acoustic Wave Power and Flows around Solar Active Regions ASTROPHYSICAL JOURNAL Cristina Rabello-Soares, M., Bogart, R. S., Scherrer, P. H. 2018; 859 (1)
  • On-Orbit Performance of the Helioseismic and Magnetic Imager Instrument onboard the Solar Dynamics Observatory SOLAR PHYSICS Hoeksema, J. T., Baldner, C. S., Bush, R. I., Schou, J., Scherrer, P. H. 2018; 293 (3): 45

    Abstract

    The Helioseismic and Magnetic Imager (HMI) instrument is a major component of NASA's Solar Dynamics Observatory (SDO) spacecraft. Since commencement of full regular science operations on 1 May 2010, HMI has operated with remarkable continuity, e.g. during the more than five years of the SDO prime mission that ended 30 September 2015, HMI collected 98.4% of all possible 45-second velocity maps; minimizing gaps in these full-disk Dopplergrams is crucial for helioseismology. HMI velocity, intensity, and magnetic-field measurements are used in numerous investigations, so understanding the quality of the data is important. This article describes the calibration measurements used to track the performance of the HMI instrument, and it details trends in important instrument parameters during the prime mission. Regular calibration sequences provide information used to improve and update the calibration of HMI data. The set-point temperature of the instrument front window and optical bench is adjusted regularly to maintain instrument focus, and changes in the temperature-control scheme have been made to improve stability in the observable quantities. The exposure time has been changed to compensate for a 20% decrease in instrument throughput. Measurements of the performance of the shutter and tuning mechanisms show that they are aging as expected and continue to perform according to specification. Parameters of the tunable optical-filter elements are regularly adjusted to account for drifts in the central wavelength. Frequent measurements of changing CCD-camera characteristics, such as gain and flat field, are used to calibrate the observations. Infrequent expected events such as eclipses, transits, and spacecraft off-points interrupt regular instrument operations and provide the opportunity to perform additional calibration. Onboard instrument anomalies are rare and seem to occur quite uniformly in time. The instrument continues to perform very well.

    View details for DOI 10.1007/s11207-018-1259-8

    View details for Web of Science ID 000427695100004

    View details for PubMedID 31007294

    View details for PubMedCentralID PMC6445534

  • STATISTICAL ANALYSIS OF ACOUSTIC WAVE PARAMETERS NEAR SOLAR ACTIVE REGIONS ASTROPHYSICAL JOURNAL Rabello-Soares, M. C., Bogart, R. S., Scherrer, P. H. 2016; 827 (2)
  • Observables Processing for the Helioseismic and Magnetic Imager Instrument on the Solar Dynamics Observatory SOLAR PHYSICS Couvidat, S., Schou, J., Hoeksema, J. T., Bogart, R. S., Bush, R. I., Duvall, T. L., Liu, Y., Norton, A. A., Scherrer, P. H. 2016; 291 (7): 1887-1938
  • Helioseismology with Solar Orbiter SPACE SCIENCE REVIEWS Loeptien, B., Birch, A. C., Gizon, L., Schou, J., Appourchaux, T., Rodriguez, J. B., Cally, P. S., Dominguez-Tagle, C., Gandorfer, A., Hill, F., Hirzberger, J., Scherrer, P. H., Solanki, S. K. 2015; 196 (1-4): 251-283
  • A METHOD FOR THE ESTIMATION OF p-MODE PARAMETERS FROM AVERAGED SOLAR OSCILLATION POWER SPECTRA ASTROPHYSICAL JOURNAL Reiter, J., Rhodes, E. J., Kosovichev, A. G., Schou, J., Scherrer, P. H., Larson, T. P. 2015; 803 (2)
  • The Interface Region Imaging Spectrograph (IRIS) SOLAR PHYSICS De Pontieu, B., Title, A. M., Lemen, J. R., Kushner, G. D., Akin, D. J., Allard, B., Berger, T., Boerner, P., Cheung, M., Chou, C., Drake, J. F., Duncan, D. W., Freeland, S., Heyman, G. F., HOFFMAN, C., Hurlburt, N. E., Lindgren, R. W., Mathur, D., REHSE, R., Sabolish, D., Seguin, R., Schrijver, C. J., Tarbell, T. D., Wuelser, J., Wolfson, C. J., Yanari, C., Mudge, J., Nguyen-Phuc, N., Timmons, R., van Bezooijen, R., Weingrod, I., Brookner, R., Butcher, G., Dougherty, B., Eder, J., Knagenhjelm, V., Larsen, S., MANSIR, D., Phan, L., Boyle, P., Cheimets, P. N., DeLuca, E. E., Golub, L., Gates, R., Hertz, E., MCKILLOP, S., Park, S., Perry, T., PODGORSKI, W. A., Reeves, K., Saar, S., Testa, P., Tian, H., Weber, M., Dunn, C., Eccles, S., Jaeggli, S. A., Kankelborg, C. C., Mashburn, K., Pust, N., Springer, L., Carvalho, R., Kleint, L., Marmie, J., Mazmanian, E., Pereira, T. M., Sawyer, S., Strong, J., Worden, S. P., Carlsson, M., Hansteen, V. H., Leenaarts, J., Wiesmann, M., Aloise, J., Chu, K., Bush, R. I., Scherrer, P. H., Brekke, P., Martinez-Sykora, J., Lites, B. W., McIntosh, S. W., Uitenbroek, H., Okamoto, T. J., Gummin, M. A., Auker, G., Jerram, P., Pool, P., Waltham, N. 2014; 289 (7): 2733-2779
  • IDENTIFYING POTENTIAL MARKERS OF THE SUN'S GIANT CONVECTIVE SCALE ASTROPHYSICAL JOURNAL LETTERS McIntosh, S. W., Wang, X., Leamon, R. J., Scherrer, P. H. 2014; 784 (2)
  • CHROMOSPHERIC AND CORONAL OBSERVATIONS OF SOLAR FLARES WITH THE HELIOSEISMIC AND MAGNETIC IMAGER ASTROPHYSICAL JOURNAL LETTERS Oliveros, J. M., Krucker, S., Hudson, H. S., Saint-Hilaire, P., Bain, H., Lindsey, C., Bogart, R., Couvidat, S., Scherrer, P., Schou, J. 2014; 780 (2)
  • Far-side helioseismic maps: the next generation Hernandez, I., Lindsey, C., Braun, D. C., Bogart, R. S., Scherrer, P. H., Hill, F., IOP IOP PUBLISHING LTD. 2013
  • Perturbations in the wave parameters near active regions Rabello-Soares, M. C., Bogart, R. S., Scherrer, P. H., IOP IOP PUBLISHING LTD. 2013
  • Comparison of Line-of-Sight Magnetograms Taken by the Solar Dynamics Observatory/Helioseismic and Magnetic Imager and Solar and Heliospheric Observatory/Michelson Doppler Imager SOLAR PHYSICS Liu, Y., Hoeksema, J. T., Scherrer, P. H., Schou, J., Couvidat, S., Bush, R. I., Duvall, T. L., Hayashi, K., Sun, X., Zhao, X. 2012; 279 (1): 295-316
  • Line-of-Sight Observables Algorithms for the Helioseismic and Magnetic Imager (HMI) Instrument Tested with Interferometric Bidimensional Spectrometer (IBIS) Observations SOLAR PHYSICS Couvidat, S., Rajaguru, S. P., Wachter, R., Sankarasubramanian, K., Schou, J., Scherrer, P. H. 2012; 278 (1): 217-240
  • Implementation and Comparison of Acoustic Travel-Time Measurement Procedures for the Solar Dynamics Observatory/Helioseismic and Magnetic Imager Time-Distance Helioseismology Pipeline SOLAR PHYSICS Couvidat, S., Zhao, J., Birch, A. C., Kosovichev, A. G., Duvall, T. L., Parchevsky, K., Scherrer, P. H. 2012; 275 (1-2): 357-374
  • Design and Ground Calibration of the Helioseismic and Magnetic Imager (HMI) Instrument on the Solar Dynamics Observatory (SDO) SOLAR PHYSICS Schou, J., Scherrer, P. H., Bush, R. I., Wachter, R., Couvidat, S., Rabello-Soares, M. C., Bogart, R. S., Hoeksema, J. T., Liu, Y., Duvall, T. L., Akin, D. J., Allard, B. A., Miles, J. W., Rairden, R., Shine, R. A., Tarbell, T. D., Title, A. M., Wolfson, C. J., Elmore, D. F., Norton, A. A., Tomczyk, S. 2012; 275 (1-2): 229-259
  • The Atmospheric Imaging Assembly (AIA) on the Solar Dynamics Observatory (SDO) SOLAR PHYSICS Lemen, J. R., Title, A. M., Akin, D. J., Boerner, P. F., Chou, C., Drake, J. F., Duncan, D. W., Edwards, C. G., Friedlaender, F. M., Heyman, G. F., Hurlburt, N. E., Katz, N. L., Kushner, G. D., Levay, M., Lindgren, R. W., Mathur, D. P., McFeaters, E. L., Mitchell, S., Rehse, R. A., Schrijver, C. J., Springer, L. A., Stern, R. A., Tarbell, T. D., Wuelser, J., Wolfson, C. J., Yanari, C., Bookbinder, J. A., Cheimets, P. N., Caldwell, D., DeLuca, E. E., Gates, R., Golub, L., Park, S., Podgorski, W. A., Bush, R. I., Scherrer, P. H., Gummin, M. A., Smith, P., Auker, G., Jerram, P., Pool, P., Soufli, R., Windt, D. L., Beardsley, S., Clapp, M., Lang, J., Waltham, N. 2012; 275 (1-2): 17-40
  • The Helioseismic and Magnetic Imager (HMI) Investigation for the Solar Dynamics Observatory (SDO) SOLAR PHYSICS Scherrer, P. H., Schou, J., Bush, R. I., Kosovichev, A. G., Bogart, R. S., Hoeksema, J. T., Liu, Y., Duvall, T. L., Zhao, J., Title, A. M., Schrijver, C. J., Tarbell, T. D., Tomczyk, S. 2012; 275 (1-2): 207-227
  • A First Look at Magnetic Field Data Products from SDO/HMI 4th Hinode Science Meeting on Unsolved Problems and Recent Insights Liu, Y., Scherrer, P. H., Hoeksema, J. T., Schou, J., Bai, T., Beck, J. G., BOBRA, M., Bogart, R. S., Bush, R. I., Couvidat, S., Hayashi, K., Kosovichev, A. G., Larson, T. P., Rabello-Soares, C., Sun, X., Wachter, R., Zhao, J., Zhao, X. P., Duvall, T. L., DeRosa, M. L., Schrijver, C. J., Title, A. M., Centeno, R., Tomczyk, S., Borrero, J. M., Norton, A. A., BARNES, G., Crouch, A. D., Leka, K. D., Abbett, W. P., Fisher, G. H., Welsch, B. T., Muglach, K., Schuck, P. W., Wiegelmann, T., Turmon, M., Linker, J. A., Mikic, Z., Riley, P., Wu, S. T. ASTRONOMICAL SOC PACIFIC. 2012: 337–352
  • Time-Distance Helioseismology Data-Analysis Pipeline for Helioseismic and Magnetic Imager Onboard Solar Dynamics Observatory (SDO/HMI) and Its Initial Results SOLAR PHYSICS Zhao, J., Couvidat, S., Bogart, R. S., Parchevsky, K. V., Birch, A. C., Duvall, T. L., Beck, J. G., Kosovichev, A. G., Scherrer, P. H. 2012; 275 (1-2): 375-390
  • Wavelength Dependence of the Helioseismic and Magnetic Imager (HMI) Instrument onboard the Solar Dynamics Observatory (SDO) SOLAR PHYSICS Couvidat, S., Schou, J., Shine, R. A., Bush, R. I., Miles, J. W., Scherrer, P. H., Rairden, R. L. 2012; 275 (1-2): 285-325
  • Imaging Spectroscopy of a White-Light Solar Flare SOLAR PHYSICS Oliveros, J. C., Couvidat, S., Schou, J., Krucker, S., Lindsey, C., Hudson, H. S., Scherrer, P. 2011; 269 (2): 269-281
  • Temporal changes in the frequencies of the solar p-mode oscillations during solar cycle 23 Rhodes, E. J., Reiter, J., Schou, J., Larson, T., Scherrer, P., Brooks, J., McFaddin, P., Miller, B., Rodriguez, J., Yoo, J., Choudhary, D. P., Strassmeier, K. G. CAMBRIDGE UNIV PRESS. 2011: 389-393
  • Temporal changes in the frequencies and widths of the solar p-mode oscillations Rhodes, E. J., Reiter, J., Schou, J., Larson, T., Scherrer, P., Brooks, J., McFaddin, P., Miller, B., Rodriguez, J., Yoo, J., Appourchaux, T. IOP PUBLISHING LTD. 2011
  • On the success rate of the farside seismic imaging of active regions SPACE WEATHER-THE INTERNATIONAL JOURNAL OF RESEARCH AND APPLICATIONS Hernandez, I. G., HILL, F., Scherrer, P. H., Lindsey, C., Braun, D. C. 2010; 8
  • Three Cycles of the Solar Toroidal Magnetic Field and This Peculiar Minimum SOHO-23 Workshop on Understanding a Peculiar Solar Minimum Lo, L., Hoeksema, J. T., Scherrer, P. H. ASTRONOMICAL SOC PACIFIC. 2010: 109–112
  • A NEW WAY TO INFER VARIATIONS OF THE SEISMIC SOLAR RADIUS ASTROPHYSICAL JOURNAL LETTERS Hernandez, I. G., Scherrer, P., HILL, F. 2009; 691 (2): L87-L90
  • Improving the Prediction Capability of Seismic Far-Side Maps Workshop on Solar-Stellar Dynamos as Revealed by Helio and Asteroseismology (GONG 2008/SOHO 21) Hernandez, I. G., Scherrer, P., Hill, F., Lindsey, C., Braun, D. ASTRONOMICAL SOC PACIFIC. 2009: 87–92
  • Distributing space weather monitoring instruments and educational materials worldwide for IHY 2007: The AWESOME and SID project ADVANCES IN SPACE RESEARCH Scherrer, D., Cohen, M., Hoeksema, T., Inan, U., Mitchell, R., Scherrer, P. 2008; 42 (11): 1777-1785
  • A changing solar shape ASTROPHYSICAL JOURNAL Emilio, M., Bush, R. I., Kuhn, J., Scherrer, P. 2007; 660 (2): L161-L163
  • Analytical models for cross-correlation signal in time-distance helioseismology ASTROPHYSICAL JOURNAL Nigam, R., Kosovichev, A. G., Scherrer, P. H. 2007; 659 (2): 1736-1748
  • A note on saturation seen in the MDI/SOHO magnetograms SOLAR PHYSICS Liu, Y., Norton, A. A., Scherrer, P. H. 2007; 241 (1): 185-193
  • Radiative transfer effects on Doppler measurements as sources of surface effects in sunspot seismology ASTROPHYSICAL JOURNAL Rajaguru, S. P., Sankarasubramanian, K., Wachter, R., Scherrer, P. H. 2007; 654 (2): L175-L178
  • Magnetic field vector retrieval with the helioseismic and magnetic imager SOLAR PHYSICS Borrero, J. M., Tomczyk, S., Norton, A., Darnell, T., Schou, J., Scherrer, P., Bush, R., Liu, Y. 2007; 240 (1): 177-196
  • Spectral line selection for HMI: A comparison of FeI 6173 angstrom and NiI 6768 angstrom SOLAR PHYSICS Norton, A. A., Pietarila Graham, J., ULRICH, R. K., Schou, J., Tomczyk, S., Liu, Y., Lites, B. W., Lopez Ariste, A., Bush, R. I., Socas-Navarro, H., Scherrer, P. H. 2006; 239 (1-2): 69-91
  • Success rate of predicting the heliospheric magnetic field polarity with Michelson Doppler Imager (MDI) synoptic charts JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS Zhao, X. P., Hoeksema, J. T., Liu, Y., Scherrer, P. H. 2006; 111 (A10)
  • Spectral line selection for HMI SOLAR POLARIZATION 4 Norton, A. A., Graham, J. D., ULRICH, R. K., Schou, J., Tomczyk, S., Liu, Y., Lites, B. W., Lopez Ariste, A., Bush, R. I., Socas-Navarro, H., Scherrer, P. H. 2006; 358: 193-196
  • Magnetic field vector retrieval with HMI SOLAR POLARIZATION 4 Borrero, J. M., Tomczyk, S., Norton, A. A., Darnell, T., Schou, J., Scherrer, P., Bush, R. I., Lui, Y. 2006; 358: 144-147
  • Prediction and understanding of the north-south displacement of the heliospheric current sheet JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS Zhao, X. P., Hoeksema, J. T., Scherrer, P. H. 2005; 110 (A10)
  • On the constancy of the solar diameter. II. ASTROPHYSICAL JOURNAL Kuhn, J. R., Bush, R. I., Emilio, M., Scherrer, P. H. 2004; 613 (2): 1241-1252
  • Optimal masks for solar g-mode detection ASTROPHYSICAL JOURNAL Wachter, R., Schou, J., Kosovichev, A. G., Scherrer, P. H. 2003; 588 (2): 1199-1203
  • Effects of magnetic topology on CME kinematic properties International Solar Cycle Studies Symposium (ISCS 2003) Liu, W., Zhao, X. P., Wu, S. T., Scherrer, P. ESA PUBLICATIONS DIVISION C/O ESTEC. 2003: 459–464
  • Solar mean magnetic field variability: A wavelet approach to Wilcox Solar Observatory and SOHO/Michelson Doppler Imager observations JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS Boberg, F., Lundstedt, H., Hoeksema, J. T., Scherrer, P. H., Liu, W. 2002; 107 (A10)
  • Large-scale solar coronal structures in soft X-rays and their relationship to the magnetic flux ASTROPHYSICAL JOURNAL Benevolenskaya, E. E., Kosovichev, A. G., Lemen, J. R., Scherrer, P. H., Slater, G. L. 2002; 571 (2): L181-L185
  • On formation of the sigmoidal structure in solar active region NOAA 8100 SOLAR PHYSICS Liu, Y., Zhao, X. P., Hoeksema, J. T., Scherrer, P. H., Wang, J., Yan, Y. 2002; 206 (2): 333-346
  • Local-area helioseismology as a diagnostic tool for solar variability E2 3/E2 4 Symposia of COSPAR Scientific Commission E held at the 33rd COSPAR Scientific Assembly Kosovichev, A. G., Duvall, T. L., Birch, A. C., Gizon, L., Scherrer, P. H., Zhao, J. W. PERGAMON-ELSEVIER SCIENCE LTD. 2002: 1899–1910
  • Solar coronal activity and evolution of the magnetic field SOLAR-TERRESTRIAL MAGNETIC ACTIVITY AND SPACE ENVIRONMENT Benevolenskaya, E. E., Kosovichev, A. G., Scherrer, P. H. 2002; 14: 27-31
  • Coronal patterns of activity from Yohkoh and SOHO/EIT data Yohkoh 10th Anniversary Meeting on Multi-Wavelength Observations of Coronal Structure and Dynamics Benevolenskaya, E. E., Kosovichev, A. G., Scherrer, P. H., Lemen, J. R., Slater, G. L. PERGAMON-ELSEVIER SCIENCE LTD. 2002: 329–332
  • Active longitudes and coronal structures during the rising phase of the solar cycle E2 2/D2 2 Symposium of COSPAR Scientific Commission E held at the 33rd COSPAR Scientific Assembly Benevolenskaya, E. E., Kosovichev, A. G., Scherrer, P. H. PERGAMON-ELSEVIER SCIENCE LTD. 2002: 389–94
  • Effect of line asymmetry on determination of high-degree mode frequencies SOHO-11 Symposium on From Solar Min to Max Reiter, J., Rhodes, E. J., Kosovichev, A. G., Schou, J., Scherrer, P. H. ESA PUBLICATIONS DIVISION C/O ESTEC. 2002: 87–90
  • Large-scale coronal structures in EUV and soft X-rays in solar cycle 23 SOHO-11 Symposium on From Solar Min to Max Benevolenskaya, E. E., Kosovichev, A. G., Scherrer, P. H., Lemen, J. R., Slater, G. L. ESA PUBLICATIONS DIVISION C/O ESTEC. 2002: 367–370
  • Solar cycle in the photosphere and corona 10th European Solar Physics Meeting Benevolenskaya, E. E., Kosovichev, A. G., Scherrer, P. H. EUROPEAN SPACE AGENCY. 2002: 831–834
  • A new method for measuring frequencies and splittings of high-degree modes SOHO-11 Symposium on From Solar Min to Max Reiter, J., Rhodes, E. J., Kosovichev, A. G., Schou, J., Scherrer, P. H. ESA PUBLICATIONS DIVISION C/O ESTEC. 2002: 91–94
  • Optimal masks for g-mode detection in MDI velocity data SOHO-11 Symposium on From Solar Min to Max Wachter, R., Schou, J., Kosovichev, A., Scherrer, P. H. ESA PUBLICATIONS DIVISION C/O ESTEC. 2002: 115–118
  • Observed and predicted ratios of the horizontal and vertical components of the solar p-mode velocity eigenfunctions ASTROPHYSICAL JOURNAL Rhodes, E. J., Reiter, J., Schou, J., Kosovichev, A. G., Scherrer, P. H. 2001; 561 (2): 1127-1143
  • Detection of high-latitude waves of solar coronal activity in extreme-ultraviolet data from the Solar and Heliospheric Observatory EUV Imaging Telescope ASTROPHYSICAL JOURNAL Benevolenskaya, E. E., Kosovichev, A. G., Scherrer, P. H. 2001; 554 (1): L107-L110
  • Active longitudinal structures of the sun from MDI and EIT observations 24th General Assembly of the International-Astronomical-Union Benevolenskaya, E. E., Kosovichev, A. G., Scherrer, P. H. ASTRONOMICAL SOC PACIFIC. 2001: 251–53
  • Local-area helioseismology by sot on-board SOLAR-B SOHO 10/GONG 2000 Workshop on Helio- and Asteroseismology at the Dawn of the Millennium Sekii, T., Shibahashi, H., Kosovichev, A. G., Duvall, T. L., Berger, T. E., Bush, R., Scherrer, P. H. ESA PUBLICATIONS DIVISION C/O ESTEC. 2001: 327–330
  • Large-scale patterns of solar magnetic field and activity cycles MAGNETIC FIELDS ACROSS THE HERTZSPRUNG-RUSSELL DIAGRAM Benevolenskaya, E. E., Kosovichev, A. G., Scherrer, P. H. 2001; 248: 135-138
  • G-mode detection: Where do we stand? SOHO 10/GONG 2000 Workshop on Helio- and Asteroseismology at the Dawn of the Millennium Appourchaux, T., Andersen, B., Berthomieu, G., Chaplin, W., Elsworth, Y., Finsterle, W., Frohlich, C., Gough, D. O., Hoeksema, T., Isaak, G., Kosovichev, A., Provost, J., Scherrer, P., Sekii, T., Toutain, T. ESA PUBLICATIONS DIVISION C/O ESTEC. 2001: 467–471
  • MDI-SOHO measures of solar radius variation 24th General Assembly of the International-Astronomical-Union Emilio, M., Kuhn, J. R., Bush, R. I., Scherrer, P. ASTRONOMICAL SOC PACIFIC. 2001: 101–4
  • Heliotomography of the outer layers of the sun SOHO 10/GONG 2000 Workshop on Helio- and Asteroseismology at the Dawn of the Millennium Kosovichev, A. G., Duvall, T. L., Birch, A. C., Gizon, L., Scherrer, P. H., Zhao, J. W. ESA PUBLICATIONS DIVISION C/O ESTEC. 2001: 701–706
  • Time-distance helioseismology and the Solar Orbiter mission 1st Solar Orbiter Workshop Gizon, L., Birch, A. C., Bush, R. I., Duvall, T. L., Kosovichev, A. G., Scherrer, P. H., Zhao, J. W. ESA PUBLICATIONS DIVISION C/O ESTEC. 2001: 227–231
  • Probing magnetic structures in the solar interior by helioseismic tomography Workshop on Magnetic Fields across the Hertzsprung-Russell Diagram Kosovichev, A. G., Duvall, T. L., Scherrer, P. H. ASTRONOMICAL SOC PACIFIC. 2001: 169–172
  • On the constancy of the solar diameter ASTROPHYSICAL JOURNAL Emilio, M., Kuhn, J. R., Bush, R. I., Scherrer, P. 2000; 543 (2): 1007-1010
  • Modeling the 1994 April 14 polar crown SXR arcade using three-dimensional magnetohydrostatic equilibrium solutions ASTROPHYSICAL JOURNAL Zhao, X. P., Hoeksema, J. T., Scherrer, P. H. 2000; 538 (2): 932-939
  • Observational upper limits to low-degree solar g-modes ASTROPHYSICAL JOURNAL Appourchaux, T., Frohlich, C., Andersen, B., Berthomieu, G., Chaplin, W. J., Elsworth, Y., Finsterle, W., Gough, D. O., Hoeksema, J. T., Isaak, G. R., Kosovichev, A. G., Provost, J., Scherrer, P. H., Sekii, T., Toutain, T. 2000; 538 (1): 401-414
  • Comparison of frequencies and rotational splittings of solar acoustic modes of low angular degree from simultaneous MDI and GOLF observations ASTROPHYSICAL JOURNAL Bertello, L., Henney, C. J., ULRICH, R. K., Varadi, F., Kosovichev, A. G., Scherrer, P. H., CORTES, T. R., Thiery, S., Boumier, P., Gabriel, A. H., Turck-Chieze, S. 2000; 535 (2): 1066-1077
  • Rossby waves on the Sun as revealed by solar 'hills' NATURE Kuhn, J. R., Armstrong, J. D., Bush, R. I., Scherrer, P. 2000; 405 (6786): 544-546

    Abstract

    It is a long-standing puzzle that the Sun's photosphere--its visible surface--rotates differentially, with the equatorial regions rotating faster than the poles. It has been suggested that waves analogous to terrestrial Rossby waves, and known as r-mode oscillations, could explain the Sun's differential rotation: Rossby waves are seen in the oceans as large-scale (hundreds of kilometres) variations of sea-surface height (5-cm-high waves), which propagate slowly either east or west (they could take tens of years to cross the Pacific Ocean). Calculations show that the solar r-mode oscillations have properties that should be strongly constrained by differential rotation. Here we report the detection of 100-m-high 'hills' in the photosphere, spaced uniformly over the Sun's surface with a spacing of (8.7 +/- 0.6) x 10(4) km. If convection under the photosphere is organized by the r-modes, the observed corrugated photosphere is a probable surface manifestation of these solar oscillations.

    View details for Web of Science ID 000087449500042

  • The magnetic connectivity of moss regions SOLAR PHYSICS Zhao, X. P., Hoeksema, J. T., Kosovichev, A. G., Bush, R., Scherrer, P. H. 2000; 193 (1-2): 219-225
  • Time-distance inversion methods and results - (Invited review) SOLAR PHYSICS Kosovichev, A. G., Duvall, T. L., Scherrer, P. H. 2000; 192 (1-2): 159-176
  • Structure and dynamics of interconnecting loops and coronal holes in active longitudes SOLAR PHYSICS Benevolenskaya, E. E., Kosovichev, A. G., Scherrer, P. H. 1999; 190 (1-2): 145-151
  • Power spectra comparison between GOLF and spatially masked MDI velocity signals ASTRONOMY & ASTROPHYSICS Henney, C. J., ULRICH, R. K., Bertello, L., Bogart, R. S., Bush, R. I., Scherrer, P. H., CORTES, T. R., Turck-Chieze, S. 1999; 348 (2): 627-635
  • The interaction of new and old magnetic fluxes at the beginning of solar cycle 23 ASTROPHYSICAL JOURNAL Benevolenskaya, E. E., Hoeksema, J. T., Kosovichev, A. G., Scherrer, P. H. 1999; 517 (2): L163-L166
  • Changes of the boot-shaped coronal hole boundary during Whole Sun Month near sunspot minimum JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS Zhao, X. P., Hoeksema, J. T., Scherrer, P. H. 1999; 104 (A5): 9735-9751
  • Time-distance helioseismology HELIOSEISMOLOGY AND SOLAR VARIABILITY Kosovichev, A. G., Duvall, T. L., Scherrer, P. H. 1999; 24 (2): 163-171
  • Asymmetry and frequencies of low-degree p-modes and the structure of the Sun's core ASTROPHYSICAL JOURNAL Toutain, T., Appourchaux, T., Frohlich, C., Kosovichev, A. G., Nigam, R., Scherrer, P. H. 1998; 506 (2): L147-L150
  • Helioseismic studies of differential rotation in the solar envelope by the solar oscillations investigation using the Michelson Doppler Imager ASTROPHYSICAL JOURNAL Schou, J., Antia, H. M., Basu, S., Bogart, R. S., Bush, R. I., Chitre, S. M., Christensen-Dalsgaard, J., Di Mauro, M. P., Dziembowski, W. A., Eff-Darwich, A., Gough, D. O., Haber, D. A., Hoeksema, J. T., Howe, R., Korzennik, S. G., Kosovichev, A. G., Larsen, R. M., Pijpers, F. P., Scherrer, P. H., Sekii, T., Tarbell, T. D., Title, A. H., Thompson, M. J., Toomre, J. 1998; 505 (1): 390-417
  • Long-lived giant cells detected at the surface of the Sun NATURE Beck, J. G., Duvall, T. L., Scherrer, P. H. 1998; 394 (6694): 653-655
  • Magnetic field of the Sun as a star: The Mount Wilson Observatory catalog 1970-1982 ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES Kotov, V. A., Scherrer, P. H., Howard, R. F., Haneychuk, V. I. 1998; 116 (1): 103-117
  • The Sun's shape and brightness NATURE Kuhn, J. R., Bush, R. I., Scheick, X., Scherrer, P. 1998; 392 (6672): 155-157
  • Asymmetry in velocity and intensity helioseismic spectra: A solution to a long-standing puzzle ASTROPHYSICAL JOURNAL Nigam, R., Kosovichev, A. G., Scherrer, P. H., Schou, J. 1998; 495 (2): L115-L118
  • A new method for diagnostics of solar magnetic fields and flows from time-distance analysis ASTROPHYSICAL JOURNAL Ryutova, M., Scherrer, P. 1998; 494 (1): 438-?
  • Calibration and stability of MDI velocities SOHO 6/GONG 98 Workshop on Structure and Dynamics of the Interior of the Sun and Sun-Like Stars Beck, J. G., Scherrer, P. H., Bush, R. I., Tarbell, T. D. EUROPEAN SPACE AGENCY. 1998: 105–108
  • APT: An astrometric and photometric telescope Conference on the Missions to the Sun II Kuhn, J. R., Bush, R., Coulter, R., Frohlich, C., Gwo, J., Jones, A., Pap, J., Scherrer, P., Sofia, S., Ulrich, R. SPIE - INT SOC OPTICAL ENGINEERING. 1998: 203–209
  • Spherical and aspherical structure of the Sun: First year of SOHO/MDI observations 185th Symposium of the International-Astronomical-Union on New Eyes to See Inside the Sun and Stars Kosovichev, A. G., Nigam, R., Scherrer, P. H., Schou, J., Christensen-Dalsgaard, J., Dziembowski, W. A., Goode, P. H., Gough, D. O., Reiter, J., Rhodes, E. J. SPRINGER. 1998: 157–64
  • The detection of giant velocity cells on the sun SOHO 6/GONG 98 Workshop on Structure and Dynamics of the Interior of the Sun and Sun-Like Stars Beck, J. G., Duvall, T. L., Scherrer, P. H., Hoeksema, J. T. EUROPEAN SPACE AGENCY. 1998: 725–729
  • Time-distance measurements of subsurface rotation and meridional flow SOHO 6/GONG 98 Workshop on Structure and Dynamics of the Interior of the Sun and Sun-Like Stars Giles, P. M., Duvall, T. L., Scherrer, P. H. EUROPEAN SPACE AGENCY. 1998: 775–780
  • Line asymmetry and excitation mechanism of solar oscillations 185th Symposium of the International-Astronomical-Union on New Eyes to See Inside the Sun and Stars Nigam, R., Kosovichev, A. G., Scherrer, P. H., Schou, J. SPRINGER. 1998: 195–98
  • SOI/MDI: Status and future prospects SOHO 6/GONG 98 Workshop on Structure and Dynamics of the Interior of the Sun and Sun-Like Stars Scherrer, P. H. EUROPEAN SPACE AGENCY. 1998: 15–16
  • Helio-atmospheric links explorer (HALE): A MIDEX experiment for exploring the emergence of magnetic flux from below the solar photosphere through the corona Conference on a Crossroads for European Solar and Heliospheric Physics Scherrer, P. H., Title, A. M., Bush, R. I., Duvall, T. L., Gurman, J. B., Hoeksema, J. T., Kosovichev, A. G., Poland, A. I., Tarbell, T. D. EUROPEAN SPACE AGENCY. 1998: 285–288
  • The Evershed effect: An MDI investigation SOHO 6/GONG 98 Workshop on Structure and Dynamics of the Interior of the Sun and Sun-Like Stars Bai, T., Scherrer, P. H., Bogart, R. S. EUROPEAN SPACE AGENCY. 1998: 607–610
  • A subsurface flow of material from the Sun's equator to its poles NATURE Giles, P. M., Duvall, T. L., Scherrer, P. H., Bogart, R. S. 1997; 390 (6655): 52-54
  • Tri-phonic helioseismology: Comparison of solar p modes observed by the helioseismology instruments aboard SOHO SOLAR PHYSICS Toutain, T., Appourchaux, T., Baudin, F., Frohlich, C., Gabriel, A., Scherrer, P., Andersen, B. N., Bogart, R., Bush, R., Finsterle, W., Garcia, R. A., Grec, G., Henney, C. J., Hoeksema, J. T., Jimenez, A., Kosovichev, A., CORTES, T. R., Turck-Chieze, S., Ulrich, R., Wehrli, C. 1997; 175 (2): 311-328
  • Measurements of frequencies of solar oscillations from the MDI Medium-l Program SOLAR PHYSICS Rhodes, E. J., Kosovichev, A. G., Schou, J., Scherrer, P. H., Reiter, J. 1997; 175 (2): 287-310
  • Structure and rotation of the solar interior: Initial results from the MDI medium-l program SOLAR PHYSICS Kosovichev, A. G., Schou, J., Scherrer, P. H., Bogart, R. S., Bush, R. I., Hoeksema, J. T., Aloise, J., Bacon, L., Burnette, A., DeForest, C., Giles, P. M., Leibrand, K., Nigam, R., Rubin, M., Scott, K., Williams, S. D., Basu, S., ChristensenDalsgaard, J., Dappen, W., Rhodes, E. J., Duvall, T. L., Howe, R., Thompson, M. J., Gough, D. O., Sekii, T., Toomre, J., Tarbell, T. D., Title, A. M., Mathur, D., Morrison, M., Saba, J. L., Wolfson, C. J., Zayer, I., MILFORD, P. N. 1997; 170 (1): 43-61
  • Temporal variability in the quiet Sun transition region 5th SOHO Workshop on the Corona and Solar Wind Near Minimum Activity Wikstol, O., Hansteen, V. H., Brynildsen, N., Maltby, P., Kjeldseth-Moe, O., Harrison, R. A., Wilhelm, K., Tarbell, T. D., Scherrer, P. H. EUROPEAN SPACE AGENCY. 1997: 733–738
  • Modeling boot-shaped coronal holes using SOHO-MDI magnetic measurements 5th SOHO Workshop on the Corona and Solar Wind Near Minimum Activity Zhao, X. P., Hoeksema, J. T., Scherrer, P. H. EUROPEAN SPACE AGENCY. 1997: 751–755
  • Time-distance helioseismology with the MDI instrument: Initial results SOLAR PHYSICS Duvall, T. L., Kosovichev, A. G., Scherrer, P. H., Bogart, R. S., Bush, R. I., DeForest, C., Hoeksema, J. T., Schou, J., Saba, J. L., Tarbell, T. D., Title, A. M., Wolfson, C. J., MILFORD, P. N. 1997; 170 (1): 63-73
  • The first results from SOHO ESA BULLETIN-EUROPEAN SPACE AGENCY Domingo, V., Fleck, B., POLAND, A., Gabriel, A., Frohlich, C., Scherrer, P., Wilhelm, K., Harrison, R., Delaboudiniere, J. P., Kohl, J., Brueckner, G., Bertaux, J. L., Bochsler, P., Kunow, H., Torsti, J. 1996: 7-24
  • Perspectives in helioseismology SCIENCE Gough, D. O., LEIBACHER, J. W., Scherrer, P. H., Toomre, J. 1996; 272 (5266): 1281-1283

    Abstract

    Helioseismology is probing the interior structure and dynamics of the sun with ever-increasing precision, providing a well-calibrated laboratory in which physical processes can be studied under conditions that are unattainable on Earth. Nearly 10 million resonant modes of oscillation are observable in the solar atmosphere, and their frequencies need to be known with great accuracy in order to gauge the sun's interior. The advent of nearly continuous imaged observations from the complementary ground-based Global Oscillation Network Group (GONG) observatories and the space-based Solar and Heliospheric Observatory instruments augurs a new era of discovery. The flow of early results from GONG resolves some issues and raises a number of theoretical questions whose answers are required for understanding how a seemingly ordinary star actually operates.

    View details for Web of Science ID A1996UN47200030

  • Prediction of coronal and heliospheric magnetic fields: The promise of SOI-MDI on SOHO 8th International Solar Wind Conference Hoeksema, J. T., Zhao, X. P., Scherrer, P. H. AMER INST PHYSICS. 1996: 76–79
  • The solar chromospheric and coronal explorer Conference on Missions to the Sun Walker, A. B., Scherrer, P. H., Hoover, R. B., TANDBERGHANSSEN, E., Barbee, T. W., Ling, J. C., MacQueen, R. M., Timothy, J. G., Adamson, P., Mennzel, M. T., Petheram, J., SHATTUCK, P. L. SPIE - INT SOC OPTICAL ENGINEERING. 1996: 286–297
  • The solar oscillations investigation - Michelson Doppler Imager SOLAR PHYSICS Scherrer, P. H., Bogart, R. S., Bush, R. I., Hoeksema, J. T., Kosovichev, A. G., Schou, J., Rosenberg, W., Springer, L., Tarbell, T. D., Title, A., Wolfson, C. J., Zayer, I., Akin, D., Carvalho, B., Chevalier, R., Duncan, D., Edwards, C., Katz, N., Levay, M., Lindgren, R., Mathur, D., Morrison, S., Pope, T., REHSE, R., Torgerson, D. 1995; 162 (1-2): 129-188
  • Status of the Solar Oscillations Investigation - Michelson Doppler Imager 2nd GONG Science Conference - Helio-Seismology and Astero-Seismology from the Earth and Space Scherrer, P. H., Bogart, R. S., Bush, R. I., Hoeksema, J. T., Milford, P., Schou, J., Pope, T., Rosenberg, W., Springer, L., Tarbell, T., Title, A., Wolfson, J., Zayer, I. ASTRONOMICAL SOC PACIFIC. 1995: 402–407
  • Michelson Doppler Imager (MDI) performance characteristics 2nd GONG Science Conference - Helio-Seismology and Astero-Seismology from the Earth and Space Zayer, I., Morrison, M., Pope, T., Rosenberg, W., Tarbell, T., Title, A., Wolfson, J., Bogart, R. S., Hoeksema, J. T., Milford, P., Scherrer, P. H., Schou, J. ASTRONOMICAL SOC PACIFIC. 1995: 456–461
  • Status of Mt Wilson - Crimean-Kazakhstan high degree helioseismology network 2nd GONG Science Conference - Helio-Seismology and Astero-Seismology from the Earth and Space Rhodes, E. J., Didkovsky, L., Chumak, O., Scherrer, P. H. ASTRONOMICAL SOC PACIFIC. 1995: 398–401
  • EAST-WEST INCLINATION OF LARGE-SCALE PHOTOSPHERIC MAGNETIC-FIELDS 2nd Flares22 Workshop on Recent Observations and Theories of Solar Flares Shrauner, J. A., Scherrer, P. H. SPRINGER. 1994: 131–41
  • ON THE UPPER LIMIT FOR DETECTING G-MODE OSCILLATIONS OF THE SUN Conference on GONG 1992: Seismic Investigation of the Sun and Stars Scherrer, P. H., Hoeksema, J. T., Kotov, V. A. ASTRONOMICAL SOC PACIFIC. 1993: 281–284
  • PLANS FOR MT-WILSON - CRIMEAN-OBSERVATORY HIGH-DEGREE HELIOSEISMOLOGY NETWORK Conference on GONG 1992: Seismic Investigation of the Sun and Stars Rhodes, E. J., Cacciani, A., Dappen, W., Didkovsky, L. V., HILL, F., Korzennik, S. G., Kosovichev, A. G., Kotov, V. A., Scherrer, P. H. ASTRONOMICAL SOC PACIFIC. 1993: 477–480
  • THE SEARCH FOR 160-MIN OSCILLATIONS IN THE STANFORD AND CRIMEAN SOLAR VELOCITY OBSERVATIONS, 1974-1991 Conference on GONG 1992: Seismic Investigation of the Sun and Stars Kotov, V. A., Scherrer, P. H., Hoeksema, J. T., Haneychuk, V. I., Tsap, T. T. ASTRONOMICAL SOC PACIFIC. 1993: 293–296
  • THE HIGH-FREQUENCY P-MODE SPECTRUM Conference on GONG 1992: Seismic Investigation of the Sun and Stars MILFORD, P. N., Scherrer, P. H., Frank, Z., Kosovichev, A. G., Gough, D. O. ASTRONOMICAL SOC PACIFIC. 1993: 97–100
  • OBSERVATIONS OF HIGH-FREQUENCY AND HIGH-WAVE-NUMBER SOLAR OSCILLATIONS ASTROPHYSICAL JOURNAL FERNANDES, D. N., Scherrer, P. H., Tarbell, T. D., Title, A. M. 1992; 392 (2): 736-738
  • THE IRIS NETWORK SITE AT THE WILCOX SOLAR OBSERVATORY 2ND WORKSHOP OF THE INTERNATIONAL RESEARCH ON THE INTERIOR OF THE SUN ( IRIS ) Hoeksema, J. T., Scherrer, P. H. SPRINGER. 1991: 57–59
  • THE SOLAR OSCILLATIONS INVESTIGATION - MICHELSON DOPPLER IMAGER FOR SOHO MEETING OF THE INTERDISCIPLINARY SCIENTIFIC COMMISSION AT THE COSPAR 28TH PLENARY MEETING Scherrer, P. H., Hoeksema, J. T., Bush, R. I. PERGAMON PRESS LTD. 1991: 113–122
  • ROTATION OF THE PHOTOSPHERIC MAGNETIC-FIELDS - A NORTH-SOUTH ASYMMETRY ASTROPHYSICAL JOURNAL Antonucci, E., Hoeksema, J. T., Scherrer, P. H. 1990; 360 (1): 296-304
  • SOLAR VARIABILITY INFLUENCES ON WEATHER AND CLIMATE - POSSIBLE CONNECTIONS THROUGH COSMIC-RAY FLUXES AND STORM INTENSIFICATION JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES Tinsley, B. A., Brown, G. M., Scherrer, P. H. 1989; 94 (D12): 14783-14792
  • HELIOSEISMIC OBSERVATIONS AT STANFORD, 1977-1986 IAU SYMPOSIA Henning, H. M., Scherrer, P. H. 1988: 29-32
  • ON THE FEASIBILITY OF CORRELATION TRACKING AT MODERATE RESOLUTION SOLAR PHYSICS Bogart, R. S., Ferguson, S. H., Scherrer, P. H., Tarbell, T. D., Title, A. M. 1988; 116 (2): 205-214
  • ROTATION OF THE CORONAL MAGNETIC-FIELD ASTROPHYSICAL JOURNAL Hoeksema, J. T., Scherrer, P. H. 1987; 318 (1): 428-436
  • AN ATLAS OF PHOTOSPHERIC MAGNETIC-FIELD OBSERVATIONS AND COMPUTED CORONAL MAGNETIC-FIELDS - 1976-1985 SOLAR PHYSICS Hoeksema, J. T., Scherrer, P. H. 1986; 105 (1): 205-211
  • THE INFLUENCE OF THE HELIOSPHERIC CURRENT SHEET AND ANGULAR SEPARATION ON FLARE-ACCELERATED SOLAR-WIND JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS Henning, H. M., Scherrer, P. H., Hoeksema, J. T. 1985; 90 (NA11): 1055-1061
  • DETECTION OF SOLAR GRAVITY MODE OSCILLATIONS NATURE Delache, P., Scherrer, P. H. 1983; 306 (5944): 651-653
  • THE SOFTWARE TOOLS - UNIX CAPABILITIES ON NON-UNIX SYSTEMS BYTE Scherrer, D. K., Scherrer, P. H., Strong, T. H., Penny, S. J. 1983; 8 (11): 430-?
  • STRUCTURE OF THE SOLAR OSCILLATION WITH PERIOD NEAR 160 MINUTES SOLAR PHYSICS Scherrer, P. H., Wilcox, J. M. 1983; 82 (1-2): 37-42
  • DETECTION OF SOLAR 5-MINUTE OSCILLATIONS OF LOW DEGREE SOLAR PHYSICS Scherrer, P. H., Wilcox, J. M., ChristensenDalsgaard, J., Gough, D. O. 1983; 82 (1-2): 75-87
  • THE STRUCTURE OF THE HELIOSPHERIC CURRENT SHEET - 1978-1982 JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS Hoeksema, J. T., Wilcox, J. M., Scherrer, P. H. 1983; 88 (NA12): 9910-9918
  • OBSERVATION OF ADDITIONAL LOW-DEGREE 5-MIN MODES OF SOLAR OSCILLATION NATURE Scherrer, P. H., Wilcox, J. M., ChristensenDalsgaard, J., Gough, D. 1982; 297 (5864): 312-313
  • STRUCTURE OF THE HELIOSPHERIC CURRENT SHEET IN THE EARLY PORTION OF SUNSPOT CYCLE 21 JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS Hoeksema, J. T., Wilcox, J. M., Scherrer, P. H. 1982; 87 (NA12): 331-338
  • WHAT CAUSES THE WARP IN THE HELIOSPHERIC CURRENT SHEET JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS Wilcox, J. M., Scherrer, P. H. 1981; 86 (NA7): 5899-5900
  • SOLAR-FLARE ACCELERATION OF SOLAR-WIND - INFLUENCE OF ACTIVE REGION MAGNETIC-FIELD SCIENCE Lundstedt, H., Wilcox, J. M., Scherrer, P. H. 1981; 212 (4502): 1501-1502

    Abstract

    The direction of the photospheric magnetic field at the site of a solar flare is a good predictor of whether the flare will accelerate solar wind plasma. If the field has a southward component, high-speed solar wind plasma is usually observed near the earth about 4 days later. If the field has a northward component, such high-speed solar wind is almost never observed. Southward-field flares may then be expected to have much larger terrestrial effects than northward flares.

    View details for Web of Science ID A1981LT86900022

    View details for PubMedID 17790539

  • GEOMAGNETIC-ACTIVITY AND HALE SECTOR BOUNDARIES PLANETARY AND SPACE SCIENCE Lundstedt, H., Scherrer, P. H., Wilcox, J. M. 1981; 29 (2): 167-170
  • ON THE NATURE OF THE APPARENT RESPONSE OF THE VORTICITY AREA INDEX TO THE SOLAR MAGNETIC-FIELD SOLAR PHYSICS Wilcox, J. M., Scherrer, P. H. 1981; 74 (2): 421-432
  • DOPPLER OBSERVATIONS OF SOLAR ROTATION ASTROPHYSICAL JOURNAL Scherrer, P. H., Wilcox, J. M. 1980; 239 (2): L89-L90
  • ORIGIN OF THE WARPED HELIOSPHERIC CURRENT SHEET SCIENCE Wilcox, J. M., Hoeksema, J. T., Scherrer, P. H. 1980; 209 (4456): 603-605

    Abstract

    The warped heliospheric current sheet for early 1976 is calculated from the observed photospheric magnetic field by a potential field method. Comparisons with measurements of the interplanetary magnetic field polarity for early 1976 obtained at several locations in the heliosphere by Helios 1, Helios 2, Pioneer 11, and at the earth show a rather detailed agreement between the computed current sheet and the observations. It appears that the large-scale structure of the warped heliospheric current sheet is determined by the structure of the photospheric magnetic field and that "ballerina skirt" effects may add small-scale ripples.

    View details for Web of Science ID A1980KA48500027

    View details for PubMedID 17756844

  • THE ROTATION OF THE SUN - OBSERVATIONS AT STANFORD ASTROPHYSICAL JOURNAL Scherrer, P. H., Wilcox, J. M., Svalgaard, L. 1980; 241 (2): 811-819
  • FURTHER EVIDENCE OF SOLAR OSCILLATIONS WITH A PERIOD OF 160 MINUTES ASTROPHYSICAL JOURNAL Scherrer, P. H., Wilcox, J. M., SEVERNY, A. B., Kotov, V. A., Tsap, T. T. 1980; 237 (3): L97-L98
  • SOLAR VARIABILITY AND TERRESTRIAL WEATHER REVIEWS OF GEOPHYSICS Scherrer, P. H. 1979; 17 (4): 724-731
  • INTER-PLANETARY MAGNETIC-FIELD POLARITY AND THE SIZE OF LOW-PRESSURE TROUGHS NEAR 180-DEGREES-W LONGITUDE SCIENCE Wilcox, J. M., Duffy, P. B., Schatten, K. H., Svalgaard, L., Scherrer, P. H., Roberts, W. O., Olson, R. H. 1979; 204 (4388): 60-62

    Abstract

    When the interplanetary magnetic field is directed away from the sun, the area of wintertime low-pressure (300-millibar) troughs near 180 degrees W longitude is significantly larger than when the field is toward the sun. This relation persists during most of the winters of 1951 to 1973.

    View details for Web of Science ID A1979GP33300027

    View details for PubMedID 17816739

  • VARIATION WITH TIME OF A SUN-WEATHER EFFECT NATURE Wilcox, J. M., Scherrer, P. H. 1979; 280 (5725): 845-845
  • AVERAGE PHOTOSPHERIC POLOIDAL AND TOROIDAL MAGNETIC-FIELD COMPONENTS NEAR SOLAR MINIMUM SOLAR PHYSICS Duvall, T. L., Scherrer, P. H., Svalgaard, L., Wilcox, J. M. 1979; 61 (2): 233-245
  • OBSERVATIONS OF SOLAR OSCILLATIONS WITH PERIODS OF 160 MINUTES NATURE Scherrer, P. H., Wilcox, J. M., Kotov, V. A., SEVERNY, A. B., Tsap, T. T. 1979; 277 (5698): 635-637
  • INTENSITY OF TROPOSPHERIC CIRCULATION ASSOCIATED WITH SOLAR MAGNETIC-SECTOR BOUNDARY TRANSITS JOURNAL OF ATMOSPHERIC AND TERRESTRIAL PHYSICS Wilcox, J. M., Scherrer, P. H., Svalgaard, L. 1979; 41 (6): 657-659
  • STRENGTH OF SUNS POLAR FIELDS SOLAR PHYSICS Svalgaard, L., Duvall, T. L., Scherrer, P. H. 1978; 58 (2): 225-239
  • ATTEMPT TO DEFINE GEOGRAPHICAL AREA NEAR GULF OF ALASKA IN WHICH A PHYSICAL RELATIONSHIP EXISTS BETWEEN INTER-PLANETARY MAGNETIC-SECTOR POLARITY AND AREA OF LOW-PRESSURE TROUGHS Wilcox, J. M., Schatten, K. H., Scherrer, P. H., Roberts, W. O., Olson, R. AMER GEOPHYSICAL UNION. 1978: 368–68
  • USING DYNAMO THEORY TO PREDICT SUNSPOT NUMBER DURING SOLAR CYCLE-21 GEOPHYSICAL RESEARCH LETTERS Schatten, K. H., Scherrer, P. H., Svalgaard, L., Wilcox, J. M. 1978; 5 (5): 411-414
  • OBSERVATIONAL SEARCH FOR LARGE-SCALE ORGANIZATION OF 5-MINUTE OSCILLATIONS ON SUN SOLAR PHYSICS Dittmer, P. H., Scherrer, P. H., Wilcox, J. M. 1978; 57 (1): 1-11
  • MEAN MAGNETIC-FIELD OF SUN - METHOD OF OBSERVATION AND RELATION TO INTERPLANETARY MAGNETIC-FIELD SOLAR PHYSICS Scherrer, P. H., Wilcox, J. M., Kotov, V., SEVERNY, A. B. 1977; 52 (1): 3-12
  • COMPARISON OF H-ALPHA SYNOPTIC CHARTS WITH LARGE-SCALE SOLAR MAGNETIC-FIELD AS OBSERVED AT STANFORD SOLAR PHYSICS Duvall, T. L., Wilcox, J. M., Svalgaard, L., Scherrer, P. H., McIntosh, P. S. 1977; 55 (1): 63-68
  • MEAN MAGNETIC-FIELD OF SUN - OBSERVATIONS AT STANFORD SOLAR PHYSICS Scherrer, P. H., Wilcox, J. M., Svalgaard, L., Duvall, T. L., Dittmer, P. H., Gustafson, E. K. 1977; 54 (2): 353-361
  • MORPHOLOGY OF A SUN-WEATHER EFFECT Wilcox, J. M., Scherrer, P. H., Svalgaard, L., Gustafson, E. K. AMER GEOPHYSICAL UNION. 1977: 697–97
  • REALITY OF A SUN-WEATHER EFFECT JOURNAL OF THE ATMOSPHERIC SCIENCES Wilcox, J. M., Svalgaard, L., Scherrer, P. H. 1976; 33 (6): 1113-1116
  • SEASONAL-VARIATION AND MAGNITUDE OF SOLAR SECTOR STRUCTURE ATMOSPHERIC VORTICITY EFFECT NATURE Wilcox, J. M., Svalgaard, L., Scherrer, P. H. 1975; 255 (5509): 539-540
  • SUNS MAGNETIC-SECTOR STRUCTURE SOLAR PHYSICS Svalgaard, L., Wilcox, J. M., Scherrer, P. H., Howard, R. 1975; 45 (1): 83-91
  • RELATIONSHIP BETWEEN SLOWLY VARYING COMPONENT OF SOLAR RADIO-EMISSION AND LARGE-SCALE PHOTOSPHERIC MAGNETIC-FIELD PATTERNS SOLAR PHYSICS Scherrer, P. H., ELRAEY, M. 1974; 35 (2): 361-368
  • INFLUENCE OF SOLAR MAGNETIC-SECTOR STRUCTURE ON TERRESTRIAL ATMOSPHERIC VORTICITY JOURNAL OF THE ATMOSPHERIC SCIENCES Wilcox, J. M., Scherrer, P. H., SVALGAAR, L., Roberts, W. O., Olson, R. H., JENNE, R. L. 1974; 31 (2): 581-588
  • CORRELATION AND SPECTRAL ANALYSIS OF DAILY SOLAR RADIO FLUX SOLAR PHYSICS ELRAEY, M., Scherrer, P. 1973; 30 (1): 149-158
  • SOLAR MAGNETIC SECTOR STRUCTURE - RELATION TO CIRCULATION OF EARTHS ATMOSPHERE SCIENCE Wilcox, J. M., Scherrer, P. H., SVALGAAR, L., Roberts, W. O., Olson, R. H. 1973; 180 (4082): 185-186

    Abstract

    The solar magnetic sector structure appears to be related to the average area of high positive vorticity centers (low-pressure troughs) observed during winter in the Northern Hemisphere at the 300-millibar level. The average area of high vorticity decreases (low-pressure troughs become less intense) during a few days near the times at which sector boundaries are carried past the earth by the solar wind. The amplitude of the effect is about 10 percent.

    View details for Web of Science ID A1973P215100022

    View details for PubMedID 17811657

  • SOLAR MAGNETIC SECTOR STRUCTURE - INFLUENCE ON STRATOSPHERIC CIRCULATION Wilcox, J. M., Scherrer, P. H., SVALGAAR, L., Roberts, W. O., Olson, R. H. AMER GEOPHYSICAL UNION. 1973: 444-?
  • DIFFERENTIAL ROTATION IN SOLAR ATMOSPHERE INFERRED FROM OPTICAL, RADIO, AND INTERPLANETARY DATA SOLAR PHYSICS ELRAEY, M., Scherrer, P. H. 1972; 26 (1): 15-?
  • MEAN PHOTOSPHERIC MAGNETIC-FIELD FROM SOLAR MAGNETOGRAMS - COMPARISONS WITH INTERPLANETARY MAGNETIC-FIELD SOLAR PHYSICS SCHERRER, P. H., HOWARD, R. 1972; 22 (2): 418-&

    View details for DOI 10.1007/BF00148706

    View details for Web of Science ID A1972L983000013

  • EXPERIMENT IN COMPUTER MEASUREMENT OF MELODIC VARIATION IN FOLKSONG JOURNAL OF AMERICAN FOLKLORE Scherrer, D. K., Scherrer, P. H. 1971; 84 (332): 231-241
  • COMPARISON OF MEAN PHOTOSPHERIC MAGNETIC FIELD AND INTERPLANETARY MAGNETIC FIELD SOLAR PHYSICS SEVERNY, A., Wilcox, J. M., Scherrer, P. H., Colburn, D. S. 1970; 15 (1): 3-?