Cosmology with Fast Radio Bursts

Cosmology with Fast Radio Bursts

Event Name Cosmology with Fast Radio Bursts
Start Date 7 Nov 2017
Description

Cosmology with Fast Radio Bursts

Dr Jean-Pierre Macquart, Curtin University

Fast Radio Bursts (FRBs) represent a class of transient astronomical signals whose remarkable and completely unanticipated properties have made them one of the hottest topics in astrophysics today.  Their characteristic sweep in the time-frequency domain indicates that they originate at extragalactic distances, yet they are extremely bright and ubiquitous, with an event rate exceeding thousands of events per day.  

The origin of FRBs is a subject of intense speculation.  I will discuss the properties of the FRBs detected by the ASKAP CRAFT survey and how, coupled with simple physics, they greatly constrain the origin of the FRB population.  I will discuss how FRBs also represent a means to solve a number of key contemporary cosmological questions, especially the "missing baryon" problem, wherein the 50-80% of all baryonic (i.e. ordinary) matter in the Universe remains unaccounted for.

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