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Statut |
Confirmé |
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Série |
LPTHE-PPH |
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Domaines |
hep-ph |
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Date |
Mardi 16 Juillet 2024 |
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Heure |
14:00 |
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Institut |
LPTHE |
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Salle |
Library (13-14.401) |
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Nom de l'orateur |
Saha |
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Prenom de l'orateur |
Akash Kumar |
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Addresse email de l'orateur |
akashks [at] iisc [dot] ac [dot] in |
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Institution de l'orateur |
Indian Institute of Sciences, Bengaluru |
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Titre |
Searching Dark Matter using Astrophysical and Cosmological tools |
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Résumé |
The non-gravitational nature of dark matter (DM) is one of the most important open questions in modern physics. In this talk, I will try to explore how both astrophysical and cosmological tools can help us in the search for DM. In the first half, I will discuss how Dark matter (DM) particles can get captured inside the Sun due to DM-electron interaction. As the number of these captured DM particles increases, they can annihilate and produce different Standard Model (SM) final states, including neutrinos and anti-neutrinos. Using data-sets from the IceCube neutrino observatory we put the most stringent constraints on DM-electron scattering cross sections in the DM mass range 10 GeV to 10^5 GeV. In the second half, I will show the effects of evaporating primordial black hole (PBH) DM on Intergalactic Medium (IGM) temperature and ionization history. Lyman-alpha forest is a powerful probe of IGM temperature. Using existing Lyman-alpha forest data-sets we put competitive limits on the fraction of DM made up of PBH. |
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Numéro de preprint arXiv |
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Commentaires |
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Fichiers attachés |
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