Academic Appointments


2021-22 Courses


All Publications


  • Evidence for line-of-sight frequency decorrelation of polarized dust emission in Planck data ASTRONOMY & ASTROPHYSICS Pelgrims, Clark, S. E., Hensley, B. S., Panopoulou, G., Pavlidou, Tassis, K., Eriksen, H. K., Wehus, I. K. 2021; 647
  • The Atacama Cosmology Telescope: a measurement of the Cosmic Microwave Background power spectra at 98 and 150 GHz JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS Choi, S. K., Hasselfield, M., Ho, S., Koopman, B., Lungu, M., Abitbol, M. H., Addison, G. E., Ade, P. R., Aiola, S., Alonso, D., Amiri, M., Amodeo, S., Angile, E., Austermann, J. E., Baildon, T., Battaglia, N., Beall, J. A., Bean, R., Becker, D. T., Bond, J., Bruno, S., Calabrese, E., Calafut, V., Campusano, L. E., Carrero, F., Chesmore, G. E., Cho, H., Clark, S. E., Cothard, N. F., Crichton, D., Crowley, K. T., Darwish, O., Datta, R., Denison, E., Devlin, M. J., Duell, C. J., Duff, S. M., Duivenvoorden, A. J., Dunkley, J., Dunner, R., Essinger-Hileman, T., Fankhanel, M., Ferraro, S., Fox, A. E., Fuzia, B., Gallardo, P. A., Gluscevic, V., Golec, J. E., Grace, E., Gralla, M., Guan, Y., Hall, K., Halpern, M., Han, D., Hargrave, P., Henderson, S., Hensley, B., Hill, J., Hilton, G. C., Hilton, M., Hincks, A. D., Hlozek, R., Hubmayr, J., Huffenberger, K. M., Hughes, J. P., Infante, L., Irwin, K., Jackson, R., Klein, J., Knowles, K., Kosowsky, A., Lakey, V., Li, D., Li, Y., Li, Z., Lokken, M., Louis, T., MacInnis, A., Madhavacheril, M., Maldonado, F., Mallaby-Kay, M., Marsden, D., Maurin, L., McMahon, J., Menanteau, F., Moodley, K., Morton, T., Naess, S., Namikawa, T., Nati, F., Newburgh, L., Nibarger, J. P., Nicola, A., Niemack, M. D., Nolta, M. R., Orlowski-Sherer, J., Page, L. A., Pappas, C. G., Partridge, B., Phakathi, P., Prince, H., Puddu, R., Qu, F. J., Rivera, J., Robertson, N., Rojas, F., Salatino, M., Schaan, E., Schillaci, A., Schmitt, B. L., Sehgal, N., Sherwin, B. D., Sierra, C., Sievers, J., Sifon, C., Sikhosana, P., Simon, S., Spergel, D. N., Staggs, S. T., Stevens, J., Storer, E., Sunder, D. D., Switzer, E. R., Thorne, B., Thornton, R., Trac, H., Treu, J., Tucker, C., Vale, L. R., Van Engelen, A., Van Lanen, J., Vavagiakis, E. M., Wagoner, K., Wang, Y., Ward, J. T., Wollack, E. J., Xu, Z., Zago, F., Zhu, N., ACT Collaboration 2020
  • The Atacama Cosmology Telescope: DR4 maps and cosmological parameters JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS Aiola, S., Calabrese, E., Maurin, L., Naess, S., Schmitt, B. L., Abitbol, M. H., Addison, G. E., Ade, P. R., Alonso, D., Amiri, M., Amodeo, S., Angile, E., Austermann, J. E., Baildon, T., Battaglia, N., Beall, J. A., Bean, R., Becker, D. T., Bond, J., Bruno, S., Calafut, V., Campusano, L. E., Carrero, F., Chesmore, G. E., Cho, H., Choi, S. K., Clark, S. E., Cothard, N. F., Crichton, D., Crowley, K. T., Darwish, O., Datta, R., Denison, E., Devlin, M. J., Duell, C. J., Duff, S. M., Duivenvoorden, A. J., Dunkley, J., Dunner, R., Essinger-Hileman, T., Fankhanel, M., Ferraro, S., Fox, A. E., Fuzia, B., Gallardo, P. A., Gluscevic, V., Golec, J. E., Grace, E., Gralla, M., Guan, Y., Hall, K., Halpern, M., Han, D., Hargrave, P., Hasselfield, M., Helton, J. M., Henderson, S., Hensley, B., Hill, J., Hilton, G. C., Hilton, M., Hincks, A. D., Hlozek, R., Ho, S., Hubmayr, J., Huffenberger, K. M., Hughes, J. P., Infante, L., Irwin, K., Jackson, R., Klein, J., Knowles, K., Koopman, B., Kosowsky, A., Lakey, V., Li, D., Li, Y., Li, Z., Lokken, M., Louis, T., Lungu, M., MacInnis, A., Madhavacheril, M., Maldonado, F., Mallaby-Kay, M., Marsden, D., McMahon, J., Menanteau, F., Moodley, K., Morton, T., Namikawa, T., Nati, F., Newburgh, L., Nibarger, J. P., Nicola, A., Niemack, M. D., Nolta, M. R., Orlowski-Sherer, J., Page, L. A., Pappas, C. G., Partridge, B., Phakathi, P., Pisano, G., Prince, H., Puddu, R., Qu, F. J., Rivera, J., Robertson, N., Rojas, F., Salatino, M., Schaan, E., Schillaci, A., Sehgal, N., Sherwin, B. D., Sierra, C., Sievers, J., Sifon, C., Sikhosana, P., Simon, S., Spergel, D. N., Staggs, S. T., Stevens, J., Storer, E., Sunder, D. D., Switzer, E. R., Thorne, B., Thornton, R., Hy Trac, Treu, J., Tucker, C., Vale, L. R., Van Engelen, A., Van Lanen, J., Vavagiakis, E. M., Wagoner, K., Wang, Y., Ward, J. T., Wollack, E. J., Xu, Z., Zago, F., Zhu, N., ACT Collaboration 2020
  • Mapping the Magnetic Interstellar Medium in Three Dimensions over the Full Sky with Neutral Hydrogen ASTROPHYSICAL JOURNAL Clark, S. E., Hensley, B. S. 2019; 887 (2)
  • Small-scale H i Channel Map Structure Is Cold: Evidence from Na i Absorption at High Galactic Latitudes ASTROPHYSICAL JOURNAL LETTERS Peek, J. G., Clark, S. E. 2019; 886 (1)
  • Through thick or thin: multiple components of the magneto-ionic medium towards the nearby Hii region Sharpless 2-27 revealed by Faraday tomography MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY Thomson, A. M., Landecker, T. L., Dickey, J. M., McClure-Griffiths, N. M., Wolleben, M., Carretti, E., Fletcher, A., Federrath, C., Hill, A. S., Mao, S. A., Gaensler, B. M., Haverkorn, M., Clark, S. E., Van Eck, C. L., West, J. L. 2019; 487 (4): 4751-4767
  • The Physical Nature of Neutral Hydrogen Intensity Structure ASTROPHYSICAL JOURNAL Clark, S. E., Peek, J. G., Miville-Deschenes, M. 2019; 874 (2)
  • A New Probe of Line-of-sight Magnetic Field Tangling ASTROPHYSICAL JOURNAL LETTERS Clark, S. E. 2018; 857 (1)
  • Galactic neutral hydrogen and the magnetic ISM foreground Clark, S. E., Jelic, VanDerHulst, T. CAMBRIDGE UNIV PRESS. 2018: 146-150
  • The GALFA-HI Survey Data Release 2 ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES Peek, J. G., Babler, B. L., Zheng, Y., Clark, S. E., Douglas, K. A., Korpela, E. J., Putman, M. E., Stanimirovic, S., Gibson, S. J., Heiles, C. 2018; 234 (1)
  • The Weakly Nonlinear Magnetorotational Instability in a Local Geometry ASTROPHYSICAL JOURNAL Clark, S. E., Oishi, J. S. 2017; 841 (1)
  • The Weakly Nonlinear Magnetorotational Instability in a Global, Cylindrical Taylor-Couette Flow ASTROPHYSICAL JOURNAL Clark, S. E., Oishi, J. S. 2017; 841 (1)
  • Three-dimensional orientation of compact high velocity clouds MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY Heitsch, F., Bartell, B., Clark, S. E., Peek, J. G., Cheng, D., Putman, M. 2016; 462 (1): L46-L50
  • Matching dust emission structures and magnetic field in high-latitude cloud L1642: comparing Herschel and Planck maps MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY Malinen, J., Montier, L., Montillaud, J., Juvela, M., Ristorcelli, I., Clark, S. E., Berne, O., Bernard, J., Pelkonen, V., Collins, D. C. 2016; 460 (2): 1934-1945
  • Neutral Hydrogen Structures Trace Dust Polarization Angle: Implications for Cosmic Microwave Background Foregrounds PHYSICAL REVIEW LETTERS Clark, S. E., Hill, J., Peek, J. G., Putman, M. E., Babler, B. L. 2015; 115 (24): 241302

    Abstract

    Using high-resolution data from the Galactic Arecibo L-Band Feed Array HI (GALFA-Hi) survey, we show that linear structure in Galactic neutral hydrogen (Hi) correlates with the magnetic field orientation implied by Planck 353 GHz polarized dust emission. The structure of the neutral interstellar medium is more tightly coupled to the magnetic field than previously known. At high Galactic latitudes, where the Planck data are noise dominated, the Hi data provide an independent constraint on the Galactic magnetic field orientation, and hence the local dust polarization angle. We detect strong cross-correlations between template maps constructed from estimates of dust intensity combined with either Hi-derived angles, starlight polarization angles, or Planck 353 GHz angles. The Hi data thus provide a new tool in the search for inflationary gravitational wave B-mode polarization in the cosmic microwave background, which is currently limited by dust foreground contamination.

    View details for DOI 10.1103/PhysRevLett.115.241302

    View details for Web of Science ID 000366171900001

    View details for PubMedID 26705622

  • Quantifying the Magnetic Alignment of HIand Dust in the Diffuse ISM Clark, S. E., Peek, J. G., Hill, J., Putman, M. E., Jablonka, P., Andre, P., VanDerTak, F. CAMBRIDGE UNIV PRESS. 2015
  • MAGNETICALLY ALIGNED HI FIBERS AND THE ROLLING HOUGH TRANSFORM ASTROPHYSICAL JOURNAL Clark, S. E., Peek, J. G., Putman, M. E. 2014; 789 (1)
  • PHYSICAL PROPERTIES OF COMPLEX C HALO CLOUDS ASTRONOMICAL JOURNAL Hsu, W., Putman, M. E., Heitsch, F., Stanimirovic, S., Peek, J. G., Clark, S. E. 2011; 141 (2)