Primordial black holes in the dark matter Galactic halo


If there are primordial black holes in the dark matter
halo, they must collide with the Galactic neutron stars (NS) and
produce light black holes (LBH), with masses below 1.4 M_Sun. This
has observational consequences that may be checked by microlensing,
by LIGO-Virgo-Kagra iterferometers detecting gravitational waves
from collisions of LBH with NS and BH, by detecting LBH in X-ray
binaries and from pulsars statistics.


Speaker: 
Marek Abramowicz 【The Physics Department of Gothenburg University (Sweden) and the N. Copernicus Astronomical Centre in Warsaw (Poland)】
Place: 
KIAA-auditorium
Host: 
Fukun Liu
Time: 
Monday, May 13, 2024 - 1:30PM to Monday, May 13, 2024 - 2:30PM
Biography: 
Prof. Marek Abramowicz earned his Ph.D. in theoretical physics from Warsaw University. After that he worked for several years at Stanford University and University of Texas at Austin. Later, for more than a decade, he collaborated closely with Dennis Sciama, first at Oxford University and then at the International School for Advanced Studies in Trieste. For twenty years he was a member of the Academic Board at the Salam's International Centre of Theoretical Physics in Trieste. In 1990-1994 he was professor of astrophysics at Nordita, the Nordic Institute for Theoretical Physics in Copenhagen. He was the Chair professor of Astrophysics at Göteborg University and Chalmers University of Technology in Sweden for many year. Now he is a professor at the Nicolaus Copernicus Astronomical Center of the Polish Academy of Science, and a member of the European Academy of Sciences and Arts. His main field of research is theory of black hole accretion disks. Together with collaborators he discovered and/or developed models of Polish Doughnuts, Slim disks, ADAFs, magnetically arrested disks (MAD). The well-known model of slim accretion disk has been considered as one of the foundations of understanding the formation and growth of supermassive black holes.