ASKAP detection of a repeat burst from the FRB 20201124A source

ATel #14502; Pravir Kumar (Swinburne University of Technology, SUT), R. M. Shannon (SUT), V. Moss (CSIRO), H. Qiu (SKA Organisation), S. Bhandari (CSIRO) on behalf of the ASKAP-CRAFT collaboration
on 2 Apr 2021; 02:05 UT
Credential Certification: Ryan Shannon (rms72@cornell.edu)

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We report the detection of a Fast Radio Burst (FRB) with the Australian Square Kilometre Array Pathfinder (ASKAP), as part of the Commensal Real-time ASKAP Fast Transients (CRAFT) survey science project. The very strong burst, FRB 20210401A, was detected with a reported signal to noise ratio of 64 in the incoherent sum of 24 antennas. The burst is likely to be a repetition from the FRB20201124A source reported by the CHIME/FRB collaboration (ATEL #14497). ASKAP was operating with a central frequency of 864.5 MHz, an observing bandwidth of 336 MHz, a time resolution of 1.2 ms and a frequency resolution of 1 MHz.

A preliminary localisation was made using the multi-beam approach described in Bannister et al. (2017, ApJL, 841,12). The properties of the burst are as follows:
Date: 2021-04-01
UTC: 11:33:01.66(1)
RA (J2000): 05:07(1)
DEC (J2000): 25:53(5)
DM: 412(3) pc cm^-3
Fluence: 187 (12) Jy ms
Intrinsic width: 3.2(6) ms
Scattering time: 5.6(3) ms
Quoted uncertainties are with 90% confidence.

A waterfall plot of the burst can be found here.