Speakers
Asuka Ito
(Kobe University)
Kazunori Kohri
Description
Light primordial black holes (PBHs) are viable candidates for dark matter. If they constitute a sizable fraction of dark matter, PBH mergers can occur frequently in the Milky Way Galaxy. The merger remnants are Kerr black holes and hence possess spin. In the presence of a light bosonic field with a Compton wavelength comparable to the black-hole radius, superradiant boson clouds can form around the remnants. These clouds can emit nearly monochromatic high-frequency gravitational waves. In this work, we investigate the possibility of probing such gravitational waves with telescopes through photons converted from gravitational waves in the magnetic fields of the Milky Way.
Author
Asuka Ito
(Kobe University)