Speaker
Jeremy Auffinger
(Institut d'Astrophysique de Paris)
Description
Primordial black holes (PBHs) lighter than $5\times 10^{14}\,$g cannot constitude the dark matter (DM) because they are already evaporated, but they are constrained by early universe phenomena (BBN, CMB). PBHs lighter than $10^9\,$g, however, are at present mostly unconstrained. In this talk, we will present scenarios where light (spinning) PBHs with $M_\text{PBH}<10^9\,$g evaporate in the early universe before BBN and produce either a warm DM particle or dark radiation. We will then confront the predictions on respectively structure formation and $\Delta N_\text{eff}$ to observations to conclude with Hawking radiation constraints on these light PBHs.
Primary author
Jeremy Auffinger
(Institut d'Astrophysique de Paris)
Co-authors
Isabella Masina
(Ferrara University and INFN)
Giorgio Orlando
(University of Groningen)
Kuver Sinha
(University of Oklahoma)
Pearl Sandick
(University of Utah)
Barmak Shams Es Haghi
(University of Utah)
