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Title: Detection of the pairwise kinematic Sunyaev-Zel'dovich effect with BOSS DR11 and the Atacama Cosmology Telescope

Abstract

We present a new measurement of the kinematic Sunyaev-Zel'dovich effect using data from the Atacama Cosmology Telescope (ACT) and the Baryon Oscillation Spectroscopic Survey (BOSS). Using 600 square degrees of overlapping sky area, we evaluate the mean pairwise baryon momentum associated with the positions of 50,000 bright galaxies in the BOSS DR11 Large Scale Structure catalog. A non-zero signal arises from the large-scale motions of halos containing the sample galaxies. The data fits an analytical signal model well, with the optical depth to microwave photon scattering as a free parameter determining the overall signal amplitude. We estimate the covariance matrix of the mean pairwise momentum as a function of galaxy separation, using microwave sky simulations, jackknife evaluation, and bootstrap estimates. The most conservative simulation-based errors give signal-to-noise estimates between 3.6 and 4.1 for varying galaxy luminosity cuts. We discuss how the other error determinations can lead to higher signal-to-noise values, and consider the impact of several possible systematic errors. Estimates of the optical depth from the average thermal Sunyaev-Zel'dovich signal at the sample galaxy positions are broadly consistent with those obtained from the mean pairwise momentum signal.

Authors:
; ; ;  [1];  [2];  [3]; ; ; ;  [4];  [5]; ;  [6]; ;  [7];  [8];  [9];  [10];  [11];  [12] more »; « less
  1. Department of Physics, Cornell University, Ithaca, NY 14853 (United States)
  2. Department of Physics and Astronomy, University of Pittsburgh, and Pittsburgh Particle Physics, Astrophysics, and Cosmology Center, 3941 O'Hara Street, Pittsburgh, PA 15260 (United States)
  3. Department of Astrophysical Sciences, Peyton Hall, Princeton University, Princeton, NJ 08544 (United States)
  4. National Institute of Standards and Technology, Boulder, CO 80305 (United States)
  5. CITA, University of Toronto, 60 St. George St., Toronto, ON M5S 3H8 (Canada)
  6. Sub-Department of Astrophysics, University of Oxford, Keble Road, Oxford, OX1 3RH (United Kingdom)
  7. Department of Physics, University of Michigan Ann Arbor, MI 48109 (United States)
  8. Department of Physics and Astronomy, University of Pennsylvania, 209 South 33rd Street, Philadelphia, PA 19104 (United States)
  9. Instituto de Astrofísica and Centro de Astro-Ingeniería, Facultad de Física, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, 7820436 Macul, Santiago (Chile)
  10. Miller Institute for Basic Research in Science, University of California, Berkeley, CA 94720 (United States)
  11. University of British Columbia, Department of Physics and Astronomy, 6224 Agricultural Road, Vancouver BC V6T 1Z1 (Canada)
  12. Astronomy Department, University of California, Berkeley, CA 94720 (United States)
Publication Date:
OSTI Identifier:
22679995
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2017; Journal Issue: 03; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; AMPLITUDES; BARYONS; COSMOLOGY; DENSITY; DETECTION; ERRORS; EVALUATION; FLUCTUATIONS; GALAXIES; LUMINOSITY; MICROWAVE RADIATION; NOISE; OSCILLATIONS; PHOTONS; RELATIVISTIC RANGE; SCATTERING; SIMULATION; TELESCOPES

Citation Formats

Bernardis, F. De, Vavagiakis, E.M., Niemack, M.D., Gallardo, P.A., Aiola, S., Battaglia, N., Beall, J., Becker, D.T., Cho, H., Fox, A., Bond, J.R., Calabrese, E., Dunkley, J., Coughlin, K., Datta, R., Devlin, M., Dunner, R., Ferraro, S., Halpern, M., Hand, N., E-mail: fdeberna@gmail.com, and and others. Detection of the pairwise kinematic Sunyaev-Zel'dovich effect with BOSS DR11 and the Atacama Cosmology Telescope. United States: N. p., 2017. Web. doi:10.1088/1475-7516/2017/03/008.
Bernardis, F. De, Vavagiakis, E.M., Niemack, M.D., Gallardo, P.A., Aiola, S., Battaglia, N., Beall, J., Becker, D.T., Cho, H., Fox, A., Bond, J.R., Calabrese, E., Dunkley, J., Coughlin, K., Datta, R., Devlin, M., Dunner, R., Ferraro, S., Halpern, M., Hand, N., E-mail: fdeberna@gmail.com, & and others. Detection of the pairwise kinematic Sunyaev-Zel'dovich effect with BOSS DR11 and the Atacama Cosmology Telescope. United States. doi:10.1088/1475-7516/2017/03/008.
Bernardis, F. De, Vavagiakis, E.M., Niemack, M.D., Gallardo, P.A., Aiola, S., Battaglia, N., Beall, J., Becker, D.T., Cho, H., Fox, A., Bond, J.R., Calabrese, E., Dunkley, J., Coughlin, K., Datta, R., Devlin, M., Dunner, R., Ferraro, S., Halpern, M., Hand, N., E-mail: fdeberna@gmail.com, and and others. Wed . "Detection of the pairwise kinematic Sunyaev-Zel'dovich effect with BOSS DR11 and the Atacama Cosmology Telescope". United States. doi:10.1088/1475-7516/2017/03/008.
@article{osti_22679995,
title = {Detection of the pairwise kinematic Sunyaev-Zel'dovich effect with BOSS DR11 and the Atacama Cosmology Telescope},
author = {Bernardis, F. De and Vavagiakis, E.M. and Niemack, M.D. and Gallardo, P.A. and Aiola, S. and Battaglia, N. and Beall, J. and Becker, D.T. and Cho, H. and Fox, A. and Bond, J.R. and Calabrese, E. and Dunkley, J. and Coughlin, K. and Datta, R. and Devlin, M. and Dunner, R. and Ferraro, S. and Halpern, M. and Hand, N., E-mail: fdeberna@gmail.com and and others},
abstractNote = {We present a new measurement of the kinematic Sunyaev-Zel'dovich effect using data from the Atacama Cosmology Telescope (ACT) and the Baryon Oscillation Spectroscopic Survey (BOSS). Using 600 square degrees of overlapping sky area, we evaluate the mean pairwise baryon momentum associated with the positions of 50,000 bright galaxies in the BOSS DR11 Large Scale Structure catalog. A non-zero signal arises from the large-scale motions of halos containing the sample galaxies. The data fits an analytical signal model well, with the optical depth to microwave photon scattering as a free parameter determining the overall signal amplitude. We estimate the covariance matrix of the mean pairwise momentum as a function of galaxy separation, using microwave sky simulations, jackknife evaluation, and bootstrap estimates. The most conservative simulation-based errors give signal-to-noise estimates between 3.6 and 4.1 for varying galaxy luminosity cuts. We discuss how the other error determinations can lead to higher signal-to-noise values, and consider the impact of several possible systematic errors. Estimates of the optical depth from the average thermal Sunyaev-Zel'dovich signal at the sample galaxy positions are broadly consistent with those obtained from the mean pairwise momentum signal.},
doi = {10.1088/1475-7516/2017/03/008},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 03,
volume = 2017,
place = {United States},
year = {Wed Mar 01 00:00:00 EST 2017},
month = {Wed Mar 01 00:00:00 EST 2017}
}