Conference Papers Year : 2024

Measures of luminous and dark matter in galaxies across time

Sabine Thater
  • Function : Author
Mousumi Das
  • Function : Author
Katherine Freese
  • Function : Author
Marie Korsaga
  • Function : Author
Chung Pei Ma
  • Function : Author
Moses Mogotsi
  • Function : Author
Cristina Popescu
  • Function : Author
Francesca Rizzo
  • Function : Author
Laura V Sales
  • Function : Author
Miguel A Sanchez-Conde
  • Function : Author
Glenn van de Ven
  • Function : Author
Hongsheng Zhao
  • Function : Author
Alice Zocchi
  • Function : Author

Abstract

Dark matter is one of the pillars of the current standard model of structure formation: it is assumed to constitute most of the matter in the Universe. However, it can so far only be probed indirectly through its gravitational effects, and its nature remains elusive. In this focus meeting, we discussed different methods used to estimate galaxies' visible and dark matter masses in the nearby and distant Universe. We reviewed successes of the standard model relying on cold dark matter, confronted observations with simulations, and highlighted inconsistencies between the two. We discussed how robust mass measurements can help plan, perform, and refine particle dark matter searches. We further exchanged about alternatives to cold dark matter, such as warm, self-interacting, and fuzzy dark matter, as well as modified gravity. Finally, we discussed prospects and strategies that could be implemented to reveal the nature of this crucial component of the Universe.

Dates and versions

hal-04805552 , version 1 (26-11-2024)

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Jonathan Freundlich, Gauri Sharma, Sabine Thater, Mousumi Das, Benoit Famaey, et al.. Measures of luminous and dark matter in galaxies across time. XXXII IAU General Assembly, Aug 2024, Cape Town, South Africa. ⟨hal-04805552⟩
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