ASKAP detection of FRB 190711

Authors:  R. M. Shannon (Swinburne University of Technology, SUT), P. Kumar (SUT), S. Bhandari (CSIRO Astronomy and Space Science), C. K. Day (SUT), J.-P. Macquart (ICRAR/Curtin University) on behalf of the ASKAP-CRAFT collaboration. 

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 Fast Transient (CRAFT) survey science project. The burst, FRB 190711, was detected with a reported signal to noise ratio of 24 in the incoherent sum of 29 antennas.  The system was operating with a central frequency of 1272.5 MHz and an observing bandwidth of 336 MHz, and time resolution of 1.7 ms. 

A preliminary localization using the multi beam approach described in Bannister et al. (2017, ApJL, 841,12). The properties of the burst are as follows:

  • Date: 2019-07-11
  • UTC:  01:53:40.86104
  • RA (J2000): 21:56(3)
  • DEC (J2000): -80:23(6)
  • DM: 593(2) pc cm^-3
  • Fluence: 28(4) Jy ms

Quoted uncertainties are with 90% confidence.

A plot of the dynamic spectrum of the burst is shown below:

For further information, please see the CRAFT collaboration webpage.