Abstract Details
| Name: Nidhi Affiliation: University of Delhi, Delhi Conference ID: ASI2018_1481 Title : Collapsing Supra-massive neutron stars and FRBs Authors and Co-Authors : Patrick Das Gupta and Nidhi Saini Dept. of Physics and Astrophysics, University of Delhi, Delhi Abstract Type : Poster Abstract Category : Extragalactic astronomy Abstract : Fast Radio Bursts (FRBs) are observed in GHz frequencies lasting for few milliseconds. They are associated with large dispersion measures at high Galactic latitudes, indicating their extragalactic origin. FRBs can be modeled by invoking gravitational collapse of supra-massive neutron stars when they lose their centrifugal support via magnetic braking (Falcke & Rezzolla 2014). In that case, FRB121102 poses a challenge to such a catastrophic origin, since it is a radio-repeater. In this poster paper, we have modeled the repeating nature of FRB121102 employing two scenarios - (a) Blandford-Znajek process due to the accretion of highly magnetized plasma on to a Kerr black hole or (b) oscillation of surface electrons around a strange quark matter star. In both the scenarios, the compact objects result from the implosion of a supra-massive neutron star. (Reference: Das Gupta, P. and Saini, N., to appear in Jour. Astrophys. Astron.) |