GBT21B-347

Polarimetry of Bursts from A Bright, Repeating FRB - copy

Abstract

The energetics and central engines of Fast Radio Bursts (FRBs) are still mysterious. The most popular models for such FRBs are young, energetic magnetars, from which burst X-ray emission may arise; these models are supported by the recent detection of temporally coincident X-ray and FRB-like radio outbursts from a soft gamma-ray repeater in our galaxy. FRB190520 is an extremely active source. The presence of a co-located persistent radio source make it useful for understanding the nature of repeating FRBs, particularly in reference to the other high-rate repeater with a persistent radio source, FRB121102. FRB121102 shows extreme magneto-ionic properties, as demonstrated by an exceedingly high rotation measure. Our first campaigns on FRB190520 indicate unexpected polarization properties, detailed herein. Here we propose a further epoch of observation to better understand the nature of these variations to inform the back-end and cadence requirements for our upcoming observing program proposals.

Investigators

Name	Institution
RESHMA ANNA THOMAS *	West Virginia University
Sarah Spolaor	West Virginia University
Kshitij Aggarwal	West Virginia University
Jessica Sydnor	West Virginia University
Di Li	National Astronomical Observatories, CAS; Space Science Institute
Mengyao Xue	National Astronomical Observatories, CAS
Yi Feng	National Astronomical Observatories, CAS
Casey Law	California Institute of Technology
liam connor	Toronto, University of; California Institute of Technology

* indicates the PI