Event category: Science

Oct. 5, 2020, 2:00 pm
Speaker: Djuna Croon, TRIUMF Abstract: Many models of dark matter feature small scale substructure. In this talk, I will describe how gravitational microlensing provides stringent constraints on such models. In particular, I will explain how existing techniques used to probe point-like objects (such as primordial black holes and MACHOs) can be adapted to find constraints on several different extended objects. Optical effects such as caustics imply a sensitivity to the mass distribution of the particular object. I will describe how...
Oct. 7, 2020, 4:00 pm
1 West
Zoom information coming soon Speaker: Katie Mack, Colloquium Virtual: Colloquium: TBD When: Wednesday, October 7, 2020 at 4:00 PM – 5:00 PM. Location:
Oct. 12, 2020, 2:00 pm
Speaker: Stefano Profumo, UCSC Abstract: In the age of gravitational wave astronomy, the possibility that some of the black holes in the universe have a primordial, rather than stellar origin, and that they might be a non-negligible fraction of the cosmological dark matter, is quite intriguing. I will review the status of the field, and comment on search strategies and future prospects for detection across many decades in black hole mass. I will also discuss how light primordial black holes...