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Large-scale structure and the intrinsic alignment of galaxies

Published online by Cambridge University Press:  12 October 2016

Jonathan Blazek ,
Uroš Seljak  and
Rachel Mandelbaum
Jonathan Blazek*
Affiliation:
Center for Cosmology and AstroParticle Physics, Department of Physics, Ohio State University, Columbus, USA
Uroš Seljak
Affiliation:
Departments of Physics and Astronomy and Lawrence Berkeley National Laboratory, University of California, Berkeley, USA
Rachel Mandelbaum
Affiliation:
McWilliams Center for Cosmology, Department of Physics, Carnegie Mellon University, Pittsburgh, PA, USA
*
1 email: blazek@berkeley.edu
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Abstract

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Coherent alignments of galaxy shapes, often called“intrinsic alignments” (IA), are the most significant source of astrophysical uncertainty in weak lensing measurements. We develop the tidal alignment model of IA and demonstrate its success in describing observational data. We also describe a technique to separate IA from galaxy-galaxy lensing measurements. Applying this technique to luminous red galaxy lenses in the Sloan Digital Sky Survey, we constrain potential IA contamination from associated sources to be below a few percent.

Keywords

Gravitational lensing; large-scale structure of universe; cosmological parameters; galaxies: formationhalosevolution

References

Blazek, J., Mandelbaum, R., Seljak, U., & Nakajima, R. 2012, JCAP, 5, 41 CrossRefGoogle Scholar
Blazek, J., McQuinn, M., & Seljak, U. 2011, JCAP, 5, 10 Google Scholar
Blazek, J., Vlah, Z., & Seljak, U. in preparationGoogle Scholar
Bridle, S. & King, L. 2007, New Journal of Physics, 9, 444 Google Scholar
Catelan, P., Kamionkowski, M., & Blandford, R. D. 2001, MNRAS, 320, L7 Google Scholar
Chisari, N. E. & Dvorkin, C. 2013, JCAP, 12, 29 Google Scholar
Hirata, C. M. et al. 2007, MNRAS, 381, 1197 CrossRefGoogle Scholar
Hirata, C. M. & Seljak, U. 2004, Phys. Rev. D, 70, 6 Google Scholar
Joachimi, B., Mandelbaum, R., Abdalla, F. B., & Bridle, S. L. 2011, A&A, 527, A26 Google Scholar
Kazin, E. A. et al. 2010, ApJ, 710, 1444 CrossRefGoogle Scholar
Mandelbaum, R., et al. 2011, MNRAS, 410, 844 CrossRefGoogle Scholar
Nakajima, R., et al. 2012, MNRAS, 420, 3240 Google Scholar
Okumura, T. & Jing, Y. P. 2009, ApJL, 694, L83 Google Scholar
Okumura, T., Jing, Y. P., & Li, C. 2009, ApJ, 694, 214 CrossRefGoogle Scholar
Reyes, R., et al. 2012, MNRAS, 425, 2610 Google Scholar
Schneider, M. D., Frenk, C. S., & Cole, S. 2012, JCAP, 5, 30 Google Scholar
Smith, R. E. & et al. 2003, MNRAS, 341, 1311 Google Scholar
Tenneti, A., Mandelbaum, R., Di Matteo, T., Feng, Y., & Khandai, N. 2014, MNRAS, 441, 470 Google Scholar
Troxel, M. A. & Ishak, M. 2014, arXiv:1407.6990Google Scholar