Bio

I am a KIPAC Postdoctoral Fellow at Stanford University since Fall 2019. Before joining Stanford I was a Postdoctoral Researcher at the University of California, Los Angeles (UCLA) in the department of Physics and Astronomy and did my PhD at ETH Zurich in the cosmology research group.

Professional Education

  • Doctor of Science, Eidgenossische Technische Hochschule (ETH Zurich) (2017)
  • Master of Science, Eidgenossische Technische Hochschule (ETH Zurich) (2013)
  • Bachelor of Science, Eidgenossische Technische Hochschule (ETH Zurich) (2011)

Stanford Advisors

Contact

  • Academic
    sibirrer@stanford.edu
    University - Scholar Department: Physics Position: Postdoctoral Scholar

Additional Info

  • Mail Code: 4060

Links

Current Research and Scholarly Interests

My current research focus on dark matter and dark energy. I am using strong gravitational lensing to probe the imprint of dark matter on the structure in our universe and measuring the expansion rate of our universe with time-delay cosmography to probe dark energy.

All Publications

  • TDCOSMO: V. Strategies for precise and accurate measurements of the Hubble constant with strong lensing ASTRONOMY & ASTROPHYSICS Birrer, S., Treu, T. 2021; 649

    View details for DOI 10.1051/0004-6361/202039179

    View details for Web of Science ID 000655639900001

  • Dark matter haloes of massive elliptical galaxies at z similar to 0.2 are well described by the Navarro-Frenk-White profile MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY Shajib, A. J., Treu, T., Birrer, S., Sonnenfeld, A. 2021; 503 (2): 2380-2405

    View details for DOI 10.1093/mnras/stab536

    View details for Web of Science ID 000648999700056

  • High-resolution imaging follow-up of doubly imaged quasars MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY Shajib, A. J., Molina, E., Agnello, A., Williams, P. R., Birrer, S., Treu, T., Fassnacht, C. D., Morishita, T., Abramson, L., Schechter, P. L., Wisotzki, L. 2021; 503 (2): 1557-1567

    View details for DOI 10.1093/mnras/stab532

    View details for Web of Science ID 000648999700001

  • Combining strong and weak lensing estimates in the COSMOS field JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS Kuhn, F., Birrer, S., Bruderer, C., Amara, A., Refregier, A. 2021

    View details for DOI 10.1088/1475-7516/2021/04/010

    View details for Web of Science ID 000644501000045

  • Large-scale Gravitational Lens Modeling with Bayesian Neural Networks for Accurate and Precise Inference of the Hubble Constant ASTROPHYSICAL JOURNAL Park, J., Wagner-Carena, S., Birrer, S., Marshall, P. J., Lin, J., Roodman, A. 2021; 910 (1)

    View details for DOI 10.3847/1538-4357/abdfc4

    View details for Web of Science ID 000632370900001

  • Hierarchical Inference with Bayesian Neural Networks: An Application to Strong Gravitational Lensing ASTROPHYSICAL JOURNAL Wagner-Carena, S., Park, J., Birrer, S., Marshall, P. J., Roodman, A., Wechsler, R. H., LSST Dark Energy Sci Collaboration 2021; 909 (2)

    View details for DOI 10.3847/1538-4357/abdf59

    View details for Web of Science ID 000629941700001

  • Testing the evolution of correlations between supermassive black holes and their host galaxies using eight strongly lensed quasars MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY Ding, X., Treu, T., Birrer, S., Agnello, A., Sluse, D., Fassnacht, C., Auger, M. W., Wong, K. C., Suyu, S. H., Morishita, T., Rusu, C. E., Galan, A. 2021; 501 (1): 269–80

    View details for DOI 10.1093/mnras/staa2992

    View details for Web of Science ID 000608474800022

  • The evolution of the size-mass relation at z=1-3 derived from the complete Hubble Frontier Fields data set MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY Yang, L., Roberts-Borsani, G., Treu, T., Birrer, S., Morishita, T., Bradac, M. 2021; 501 (1): 1028–37

    View details for DOI 10.1093/mnras/staa3713

    View details for Web of Science ID 000608474800079

  • The impact of mass map truncation on strong lensing simulations ASTRONOMY & ASTROPHYSICS Van de Vyvere, L., Sluse, D., Mukherjee, S., Xu, D., Birrer, S. 2020; 644

    View details for DOI 10.1051/0004-6361/202038942

    View details for Web of Science ID 000598656400006

  • H0LiCOW XII. Lens mass model of WFI2033-4723 and blind measurement of its time-delay distance and H-0 MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY Rusu, C. E., Wong, K. C., Bonvin, V., Sluse, D., Suyu, S. H., Fassnacht, C. D., Chan, J. H., Hilbert, S., Auger, M. W., Sonnenfeld, A., Birrer, S., Courbin, F., Treu, T., Chen, G., Halkola, A., Koopmans, L. E., Marshall, P. J., Shajib, A. J. 2020; 498 (1): 1440–68

    View details for DOI 10.1093/mnras/stz3451

    View details for Web of Science ID 000587741300099

  • H0LiCOW-XIII. A 2.4 per cent measurement of H-0 from lensed quasars: 5.3 sigma tension between early- and late-Universe probes MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY Wong, K. C., Suyu, S. H., Chen, G., Rusu, C. E., Millon, M., Sluse, D., Bonvin, V., Fassnacht, C. D., Taubenberger, S., Auger, M. W., Birrer, S., Chan, J. H., Courbin, F., Hilbert, S., Tihhonova, O., Treu, T., Agnello, A., Ding, X., Jee, I., Komatsu, E., Shajib, A. J., Sonnenfeld, A., Blandford, R. D., Koopmans, L. E., Marshall, P. J., Meylan, G. 2020; 498 (1): 1420–39

    View details for DOI 10.1093/mnras/stz3094

    View details for Web of Science ID 000587741300098

  • The first simultaneous measurement of Hubble constant and post-Newtonian parameter from time-delay strong lensing MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY Yang, T., Birrer, S., Hu, B. 2020; 497 (1): L56–L61

    View details for DOI 10.1093/mnrasl/slaa107

    View details for Web of Science ID 000574920100011

  • A versatile tool for cluster lensing source reconstruction - I. Methodology and illustration on sources in the Hubble Frontier Field Cluster MACS J0717.5+3745 MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY Yang, L., Birrer, S., Treu, T. 2020; 496 (3): 2648–62

    View details for DOI 10.1093/mnras/staa1649

    View details for Web of Science ID 000562471000010

  • Cosmic dissonance: are new physics or systematics behind a short sound horizon? ASTRONOMY & ASTROPHYSICS Arendse, N., Wojtak, R. J., Agnello, A., Chen, G., Fassnacht, C. D., Sluse, D., Hilbert, S., Millon, M., Bonvin, V., Wong, K. C., Courbin, F., Suyu, S. H., Birrer, S., Treu, T., Koopmans, L. E. 2020; 639

    View details for DOI 10.1051/0004-6361/201936720

    View details for Web of Science ID 000550677000004

  • Core or Cusps: The Central Dark Matter Profile of a Strong Lensing Cluster with a Bright Central Image at Redshift 1 ASTROPHYSICAL JOURNAL Collett, T. E., Buckley-Geer, E., Lin, H., Bacon, D., Nichol, R. C., Nord, B., Morice-Atkinson, X., Amara, A., Birrer, S., Kuropatkin, N., More, A., Papovich, C., Romer, K. K., Tessore, N., Abbott, T. C., Allam, S., Annis, J., Benoit-Levy, A., Brooks, D., Burke, D. L., Kind, M., Castander, F. J., D'Andrea, C. B., da Costa, L. N., Desai, S., Diehl, H., Doel, P., Eifler, T. F., Flaugher, B., Frieman, J., Gerdes, D. W., Goldstein, D. A., Gruen, D., Gschwend, J., Gutierrez, G., James, D. J., Kuehn, K., Kuhlmann, S., Lahav, O., Li, T. S., Lima, M., Maia, M. G., March, M., Marshall, J. L., Martini, P., Melchior, P., Miquel, R., Plazas, A. A., Rykoff, E. S., Sanchez, E., Scarpine, V., Schindler, R., Schubnell, M., Sevilla-Noarbe, I., Smith, M., Sobreira, F., Suchyta, E., Swanson, M. C., Tarle, G., Tucker, D. L., Walker, A. R. 2017; 843 (2)

    View details for DOI 10.3847/1538-4357/aa76e6

    View details for Web of Science ID 000405549400009