PLANCK2024

Session

Parallel Session PII.7

6 Jun 2024, 16:40

Anfiteatro Abreu Faro (IST, Lisboa)

Conveners

Parallel Session PII.7

• Catarina Cosme (U. Coimbra)

296. Boosting galactic dark matter with relic supernova neutrinos

Manibrata Sen

06/06/2024, 16:40

Diffuse neutrinos from past supernovae in the Universe present
us with a unique opportunity to test dark matter (DM) interactions.
These neutrinos can scatter and boost the DM particles in the Milky Way
halo to relativistic energies allowing us to detect them in terrestrial
laboratories. In this talk, I will discuss how the consideration of
energy-dependent cross-sections for DM...

218. The interplay between Primordial Black Holes and Leptogenesis

Marco Chianese (University of Naples Federico II & INFN)

06/06/2024, 17:00

Primordial Black holes (PBHs) with masses lighter than 10^15 grams should have been evaporated by now giving potentially access to the physics of the Early Universe. In particular, the presence of PBHs could have impacted the process of leptogenesis in different ways depending on the mass and so on the temperature of the PBHs. We present the impact of the non-standard cosmology driven by the...

224. Regurgitated Dark Matter

Philip Lu (KIAS)

06/06/2024, 17:20

We present a new model for WIMP production based on the formation and subsequent evaporation of early Universe primordial black holes (PBHs) themselves formed from DM particles. We consider a first order phase transition that traps the initially thermal DM particles, resulting in the formation of Fermiball remnants that collapse to PBHs, which then emit the same types of DM particles. We show...

292. Relic \nu Background boosted in Cosmic Reservoirs

Andrea Giovanni De Marchi

06/06/2024, 17:40

Abstract: The relic \nu background (R\nu B) is the `holy grail’ of neutrino physics and it is also the only known Dark Matter subcomponent. Yet, it has so far escaped detection attempts, mainly due to the very low energies and very weak cross-sections involved in the detection channels. In this talk, I will describe the mechanism by which ultra-high energy (UHE) cosmic rays, stored in cosmic...