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Assembly Series

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McKelvey School of Engineering

Astrophysics Seminar on Fast Radio Bursts

Friday, March 25 | 9:00 AM

Compton Hall, 241
One Brookings Drive, St. Louis, Missouri 63130

The sources of Fast Radio Bursts (FRB) have been a mystery since their discovery in 2007. They are divided into two apparently disjoint classes: repeaters, observed to repeat roughly once per minute, and non-repeaters. Recent sensitive observations of more than 1500 bursts from each of two repeaters have failed to find evidence for the periodicity expected if their origins are neutron stars. I therefore suggest that their origins are accretion discs around intermediate mass black holes. The rate of apparently non-repeating radio bursts exceeds that of all known catastrophic astronomical events, implying that these FRB, too, repeat, but rarely; the observed bursts are true outliers. Soft Gamma Repeaters also show true outliers; a similar phenomenon may be the source of apparently non-repeating FRB.

Sponsored by the McDonnell Center for the Space Sciences.

Event Type

Lectures & Presentations

Schools

Arts & Sciences

Topic

Science & Technology

Website

https://artsci.wustl.edu/events/astro...

Department
McDonnell Center for the Space Sciences
Event Contact

physics@wustl.edu

Speaker Information
Jonathan Katz (Hosted by Errando) from Washington University in St. Louis will be presenting the seminar "The Sources of Fast Radio Bursts, Part II"
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