The Atacama Cosmology Telescope: A search for late-time anisotropic screening of the Cosmic Microwave Background

Fuente: arXiv

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Dettagli Bibliografici
Autori principali:	Coulton, William R., Schutt, Theo, Maniyar, Abhishek S., Schaan, Emmanuel, An, Rui, Atkins, Zachary, Battaglia, Nicholas, Bond, J Richard, Calabrese, Erminia, Choi, Steve K., Devlin, Mark J., Duivenvoorden, Adriaan J., Dunkley, Jo, Ferraro, Simone, Gluscevic, Vera, Hill, J. Colin, Hilton, Matt, Hincks, Adam D., Kosowsky, Arthur, Kramer, Darby, Kusiak, Aleksandra, La Posta, Adrien, Louis, Thibaut, Madhavacheril, Mathew S., Marques, Gabriela A., McCarthy, Fiona, McMahon, Jeff, Moodley, Kavilan, Naess, Sigurd, Page, Lyman A., Partridge, Bruce, Qu, Frank J., Sehgal, Neelima, Sherwin, Blake D., Sifón, Cristóbal, Spergel, David N., Staggs, Suzanne T., Van Engelen, Alexander, Vargas, Cristian, Wollack, Edward J.
Natura:	Preprint
Pubblicazione:	2024
Soggetti:	Cosmology and Nongalactic Astrophysics
Accesso online:	Acceder al recurso
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_version_	1866909657021284352
author	Coulton, William R. Schutt, Theo Maniyar, Abhishek S. Schaan, Emmanuel An, Rui Atkins, Zachary Battaglia, Nicholas Bond, J Richard Calabrese, Erminia Choi, Steve K. Devlin, Mark J. Duivenvoorden, Adriaan J. Dunkley, Jo Ferraro, Simone Gluscevic, Vera Hill, J. Colin Hilton, Matt Hincks, Adam D. Kosowsky, Arthur Kramer, Darby Kusiak, Aleksandra La Posta, Adrien Louis, Thibaut Madhavacheril, Mathew S. Marques, Gabriela A. McCarthy, Fiona McMahon, Jeff Moodley, Kavilan Naess, Sigurd Page, Lyman A. Partridge, Bruce Qu, Frank J. Sehgal, Neelima Sherwin, Blake D. Sifón, Cristóbal Spergel, David N. Staggs, Suzanne T. Van Engelen, Alexander Vargas, Cristian Wollack, Edward J.
author_facet	Coulton, William R. Schutt, Theo Maniyar, Abhishek S. Schaan, Emmanuel An, Rui Atkins, Zachary Battaglia, Nicholas Bond, J Richard Calabrese, Erminia Choi, Steve K. Devlin, Mark J. Duivenvoorden, Adriaan J. Dunkley, Jo Ferraro, Simone Gluscevic, Vera Hill, J. Colin Hilton, Matt Hincks, Adam D. Kosowsky, Arthur Kramer, Darby Kusiak, Aleksandra La Posta, Adrien Louis, Thibaut Madhavacheril, Mathew S. Marques, Gabriela A. McCarthy, Fiona McMahon, Jeff Moodley, Kavilan Naess, Sigurd Page, Lyman A. Partridge, Bruce Qu, Frank J. Sehgal, Neelima Sherwin, Blake D. Sifón, Cristóbal Spergel, David N. Staggs, Suzanne T. Van Engelen, Alexander Vargas, Cristian Wollack, Edward J.
contents	Since the formation of the first stars, most of the gas in the Universe has been ionized. Spatial variations in the density of this ionized gas generate cosmic microwave background anisotropies via Thomson scattering, a process known as the ``anisotropic screening'' effect. We propose and implement for the first time a new estimator to cross-correlate unWISE galaxies and anisotropic screening, as measured by the Atacama Cosmology Telescope and Planck satellite. We do not significantly detect the effect; the null hypothesis is consistent with the data at 1.7 $σ$ (resp. 0.016 $σ$) for the blue (resp. green) unWISE sample. We obtain an upper limit on the integrated optical depth within a 6 arcmin disk to be $\barτ< 0.033$ arcmin$^2$ at 95\% confidence for the blue sample and $\barτ< 0.057$ arcmin$^2$ for the green sample. Future measurements with Simons Observatory and CMB-S4 should detect this effect significantly. Complementary to the kinematic Sunyaev-Zel'dovich effect, this probe of the gas distribution around halos will inform models of feedback in galaxy formation and baryonic effects in galaxy lensing.
format	Preprint
id	arxiv_https___arxiv_org_abs_2401_13033
institution	arXiv
publishDate	2024
record_format	arxiv
spellingShingle	The Atacama Cosmology Telescope: A search for late-time anisotropic screening of the Cosmic Microwave Background Coulton, William R. Schutt, Theo Maniyar, Abhishek S. Schaan, Emmanuel An, Rui Atkins, Zachary Battaglia, Nicholas Bond, J Richard Calabrese, Erminia Choi, Steve K. Devlin, Mark J. Duivenvoorden, Adriaan J. Dunkley, Jo Ferraro, Simone Gluscevic, Vera Hill, J. Colin Hilton, Matt Hincks, Adam D. Kosowsky, Arthur Kramer, Darby Kusiak, Aleksandra La Posta, Adrien Louis, Thibaut Madhavacheril, Mathew S. Marques, Gabriela A. McCarthy, Fiona McMahon, Jeff Moodley, Kavilan Naess, Sigurd Page, Lyman A. Partridge, Bruce Qu, Frank J. Sehgal, Neelima Sherwin, Blake D. Sifón, Cristóbal Spergel, David N. Staggs, Suzanne T. Van Engelen, Alexander Vargas, Cristian Wollack, Edward J. Cosmology and Nongalactic Astrophysics Since the formation of the first stars, most of the gas in the Universe has been ionized. Spatial variations in the density of this ionized gas generate cosmic microwave background anisotropies via Thomson scattering, a process known as the ``anisotropic screening'' effect. We propose and implement for the first time a new estimator to cross-correlate unWISE galaxies and anisotropic screening, as measured by the Atacama Cosmology Telescope and Planck satellite. We do not significantly detect the effect; the null hypothesis is consistent with the data at 1.7 $σ$ (resp. 0.016 $σ$) for the blue (resp. green) unWISE sample. We obtain an upper limit on the integrated optical depth within a 6 arcmin disk to be $\barτ< 0.033$ arcmin$^2$ at 95\% confidence for the blue sample and $\barτ< 0.057$ arcmin$^2$ for the green sample. Future measurements with Simons Observatory and CMB-S4 should detect this effect significantly. Complementary to the kinematic Sunyaev-Zel'dovich effect, this probe of the gas distribution around halos will inform models of feedback in galaxy formation and baryonic effects in galaxy lensing.
title	The Atacama Cosmology Telescope: A search for late-time anisotropic screening of the Cosmic Microwave Background
topic	Cosmology and Nongalactic Astrophysics
url	https://arxiv.org/abs/2401.13033