Astronomy and Astrophysics Seminars

Source properties and spatial distribution of Fast radio bursts

by Mr. Mukul Bhattacharya, (University of Texas, Austin, USA)

Tuesday, May 14, 2019 from to (Asia/Kolkata)
at DAA SEMINAR ( A269 )
TIFR
Description
Fast radio bursts (FRBs) are radio transients of possible cosmological origin with millisecond duration and Jansky-level brightness, mostly detected from high Galactic latitudes. Until date, more than 50 non-repeating FRBs and two repeating FRBs have been published, and many more bursts are expected to be detected in the near future with the upcoming radio transient surveys. In this talk, we discuss a formalism that we developed to estimate the intrinsic properties of FRBs from observations by assuming a fixed DM contribution from a MW-like host galaxy, pulse broadening models for turbulent plasma and a flat FRB energy spectrum. We present the results from our Monte Carlo code which constrains the properties of the FRB source, its host galaxy and scattering in the intervening plasma from the current observations. We use the current FRB follow-up data to determine whether the repeating FRB 121102 is representative of the entire FRB population. We further extend our analysis to constrain the spatial density of these bursts from their observed specific flux distribution.