ZOOM ONLY: Black Holes in the Early Universe

  • April 8, 2020, 4:00 pm US/Central
  • Dan Hooper, Fermilab
  • Chris Stoughton

Topic: Colloquium April 8 – 4:00pm-5:00p
Time: Apr 8, 2020 04:00 PM Central Time (US and Canada)

Join Zoom Meeting

Meeting ID: 804 092 844

One tap mobile
+13126266799,,804092844# US (Chicago)
+16465588656,,804092844# US (New York)

Dial by your location
+1 312 626 6799 US (Chicago)
+1 646 558 8656 US (New York)
+1 253 215 8782 US
+1 301 715 8592 US
+1 346 248 7799 US (Houston)
+1 669 900 6833 US (San Jose)
Meeting ID: 804 092 844
Find your local number: https://fnal.zoom.us/u/aevvWBmzEQ

Join by SIP

Join by H.323 (US West) (US East) (China) (India Mumbai) (India Hyderabad) (EMEA) (Australia) (Hong Kong) (Brazil) (Canada) (Japan)
Meeting ID: 804 092 844


Cosmology textbooks typically assume that the early universe was dominated by relativistic particles. But if even a relatively small number of black holes were created after inflation, they would make up an increasingly large fraction of the total energy density as space expands. I’ll argue that it is well-motivated to scenarios in which the early universe included an era in which low-mass (<10^8 grams) primordial black holes dominated the total energy density. Within this context, I’ll discuss Hawking radiation as a mechanism to produce both dark radiation and dark matter. I’ll also talk about the possibility that these black holes may have undergone mergers before evaporating, leading to potentially detectable gravitational waves signals, and to the production of a “hot graviton background”.


This Fermilab colloquium also will be recorded and will be made available in the Fermilab video archive in the next 10 days.

Use this link for the phrase “Fermilab video archive” in the above sentence: