Dark matter and black holes

Session

Plenaries 6-7: Sachiko Kuroyanagi and Stefano Profumo

2 Dec 2025, 14:00

Lecture Hall (Kavli IPMU)

Conveners

Plenaries 6-7: Sachiko Kuroyanagi and Stefano Profumo

• Chair: Alex Kusenko

219. LVK O4a Constraints on Primordial Black Holes

Sachiko Kuroyanagi

02/12/2025, 14:00

I will review various methods for constraining primordial black holes through gravitational wave observations and discuss the latest results from the O4a run of the LIGO-Virgo-KAGRA collaboration.

220. Planck relics as dark matter

Stefano Profumo

02/12/2025, 14:30

I will survey scenarios that produce Planck-mass relics and assess whether they can stably carry electric, magnetic, or dark charge. I’ll examine charge retention and neutralization in the late Universe (including Schwinger discharge and plasma capture), and highlight quantum-gravity effects near extremality—especially for magnetically charged and near-extremal black holes. Finally, I’ll...