GBT24A-448

PROBING ULTRA-FAST RADIO BURSTS AND HIGH-FREQUENCY EMISSION FROM FRB 20240114A

Abstract

Recently, the CHIME/FRB Collaboration announced the discovery of a new active repeating fast radio burst source, FRB 20240114A. High-cadence observations with small European dishes revealed that this is source is hyper-active and that the burst emission extents all way to 1.7 GHz, which is at the top of the band for these telescopes. While thousands of FRBs are known, high frequency detections of FRBs remain rare, with only two FRB sources who have been seen at C-band (see, e.g., Gajjar et al., 2018). We therefore request 6 hours of Green Bank Telescope time, combined with the Breakthrough Listen digital backend. We would like to have 3 hours with the L-band receiver and 3 hours with the C-band receiver, recording raw voltages for the entire observation. The primary scientific aim is to search for ultra-fast radio bursts that last at most a couple of microseconds (Snelders et al., 2023) and for 'forests' of micro-shots (Hewitt et al., 2023). The auxiliary scientific goals are to study burst properties, such as temporal width and polarimetry, across a large bandwidth.

Investigators

Name	Institution
Jason Hessels	Netherlands Institute for Radio Astronomy; Amsterdam, Universiteit van
Vishal Gajjar	California at Berkeley, University of
Mark Snelders *	Netherlands Institute for Radio Astronomy
Andrew Siemion	California at Berkeley, University of; Netherlands Institute for Radio Astronomy; Nijmegen, Radboud Universiteit
Steve Croft	California at Berkeley, University of

* indicates the PI