Events Calendar

Dicke’s superradiance and Fast Radio Bursts, Martin Houde

Date:
Thursday, October 25, 2018
Time:
1:30 pm - 2:30 pm
Location:
Physics & Astronomy Building (PAB)
Room: 100
Department of Physics & Astronomy
London, Ontario
Cost:
Free

Department of Physics and Astronomy

PHYSICS & ASTRONOMY COLLOQUIUM

Dr. Martin Houde

Department of Physics & Astronomy
Western University

“Dicke’s superradiance and Fast Radio Bursts”

ABSTRACT

Fast Radio Bursts (FRBs) emanate from extragalactic sources and are characterized by short (from tens of μs to several ms) and powerful bursts of radiation detected at radio frequencies with bandwidths often spanning several hundreds of MHz. But despite increasing observational efforts aimed at their detection and the characterization of their host environments, the nature of FRBs remains elusive. In this presentation I will discuss the application of Dicke’s superradiance (SR) to the FRB problem while endeavouring to account for the significant amount of data obtained on FRB 121102, the only such source that has so far been precisely located and had its host identified. Although it has remained unnoticed by the astrophysics community until very recently, SR has been a very active field of research in the quantum optics community since its introduction by R. H. Dicke in 1954. In this presentation, I will start by giving a brief description of the physics underlying Dicke’s SR and show how this quantum mechanical entanglement phenomenon could help in elucidating the nature of FRBs. In particular, I will show how a young pulsar located at ~ 100 pc or more from an SR/FRB system could initiate the onset of a powerful burst of radiation detectable over cosmological distances.

STUDENTS – after the talk, you’re encouraged to return to the 2nd floor Atrium lounge to meet with the speaker.
COFFEE – coffee and cookies will be available in the 2nd floor Atrium lounge at 1:15 p.m.
CELL PHONES – as a courtesy to the speaker and audience, please set your cellphones to “silent” mode. Thanks!
Host:
Prof. R. J. Sica
Contact:
Jodi Guthrie - Assistant to the Chair
jodi@uwo.ca
519-661-2111 ext.86438
Event Type:


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