Document detail
ID
oai:arXiv.org:2410.19046
Topic
Astrophysics - Cosmology and Nonga...Author
Coulton, William R. Duivenvoorden, Adriaan J. Atkins, Zachary Battaglia, Nicholas Battistelli, Elia Stefano Bond, J Richard Cai, Hongbo Calabrese, Erminia Choi, Steve K. Crowley, Kevin T. Devlin, Mark J. Dunkley, Jo Ferraro, Simone Guan, Yilun Hervías-Caimapo, Carlos Hill, J. Colin Hilton, Matt Hincks, Adam D. Kosowsky, Arthur Madhavacheril, Mathew S. van Marrewijk, Joshiwa McCarthy, Fiona Moodley, Kavilan Mroczkowski, Tony Niemack, Michael D. Page, Lyman A. Partridge, Bruce Schaan, Emmanuel Sehgal, Neelima Sherwin, Blake Sifón, Cristóbal Spergel, David N. Staggs, Suzanne T. Vavagiakis, Eve M. Wollack, Edward J.Category
sciences: astrophysics
Year
2024
listing date
10/30/2024
Keywords
effect temperature correctionsAbstract
The high electron temperature in galaxy clusters ($>1\,$keV or $>10^7\,$K) leads to corrections at the level of a few percent in their thermal Sunyaev-Zeldovich effect signatures.
Both the size and frequency dependence of these corrections, which are known as relativistic temperature corrections, depend upon the temperature of the objects.
In this work we exploit this effect to measure the average temperature of a stack of Compton-$y$ selected clusters.
Specifically, we apply the "spectroscopic method" and search for the temperature that best fits the clusters' signal measured at frequencies from 30 to 545 GHz by the Atacama Cosmology Telescope and Planck satellite.
We measure the average temperature of clusters detected in the ACT maps to be $8.5\pm 2.4\,$keV, with an additional systematic error of comparable amplitude dominated by passband uncertainty.
Upcoming surveys, such as the Simons Observatory and CMB-S4, have the potential to dramatically improve upon these measurements and thereby enable precision studies of cluster temperatures with millimeter observations.
The key challenge for future observations will be mitigating instrumental systematic effects, which already limit this analysis.
;Comment: 21 pages with 17 figures
Coulton, William R.,Duivenvoorden, Adriaan J.,Atkins, Zachary,Battaglia, Nicholas,Battistelli, Elia Stefano,Bond, J Richard,Cai, Hongbo,Calabrese, Erminia,Choi, Steve K.,Crowley, Kevin T.,Devlin, Mark J.,Dunkley, Jo,Ferraro, Simone,Guan, Yilun,Hervías-Caimapo, Carlos,Hill, J. Colin,Hilton, Matt,Hincks, Adam D.,Kosowsky, Arthur,Madhavacheril, Mathew S.,van Marrewijk, Joshiwa,McCarthy, Fiona,Moodley, Kavilan,Mroczkowski, Tony,Niemack, Michael D.,Page, Lyman A.,Partridge, Bruce,Schaan, Emmanuel,Sehgal, Neelima,Sherwin, Blake,Sifón, Cristóbal,Spergel, David N.,Staggs, Suzanne T.,Vavagiakis, Eve M.,Wollack, Edward J., 2024, The Atacama Cosmology Telescope: A measurement of galaxy cluster temperatures through relativistic corrections to the thermal Sunyaev-Zeldovich effect
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