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Snowmass2021 Cosmic Frontier White Paper: Dark Matter Physics from Halo Measurements

Authors

Bechtol, Keith;
Birrer, Simon;
Cyr-Racine, Francis-Yan;
Schutz, Katelin;
Adhikari, Susmita;
Amin, Mustafa;
Banerjee, Arka;
Bird, Simeon;
Blinov, Nikita;
Boddy, Kimberly K.;
Boehm, Celine;
Bundy, Kevin;
Buschmann, Malte;
Chakrabarti, Sukanya;
Curtin, David;
Dai, Liang;
Drlica-Wagner, Alex;
Dvorkin, Cora;
Erickcek, Adrienne L.;
Gilman, Daniel;
Heeba, Saniya;
Kim, Stacy;
Iršič, Vid;
Leauthaud, Alexie;
Lovell, Mark;
Lukić, Zarija;
Mao, Yao-Yuan;
Mau, Sidney;
Mitridate, Andrea;
Mocz, Philip;
Muñoz, Julian B.;
Nadler, Ethan O.;
Peter, Annika H. G.;
Price-Whelan, Adrian;
Robertson, Andrew;
Sabti, Nashwan;
Sehgal, Neelima;
Shipp, Nora;
Simon, Joshua D.;
Singh, Rajeev;
Van Tilburg, Ken;
Wechsler, Risa H.;
Widmark, Axel;
Yu, Hai-Bo
Eprint

Abstract

The non-linear process of cosmic structure formation produces gravitationally bound overdensities of dark matter known as halos. The abundances, density profiles, ellipticities, and spins of these halos can be tied to the underlying fundamental particle physics that governs dark matter at microscopic scales. Thus, macroscopic measurements of dark matter halos offer a unique opportunity to determine the underlying properties of dark matter across the vast landscape of dark matter theories. This white paper summarizes the ongoing rapid development of theoretical and experimental methods, as well as new opportunities, to use dark matter halo measurements as a pillar of dark matter physics.

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*The material contained in this document is based upon work supported by a National Aeronautics and Space Administration (NASA) grant or cooperative agreement. Any opinions, findings, conclusions or recommendations expressed in this material are those of the author and do not necessarily reflect the views of NASA.

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