A second fast radio burst discovered with Parkes Telescope within 50 hours: FRB180311 in the direction of PSR J2129-5721
ATel #11396; Oslowski, S. (Swinburne University of Technology (SUT)); Shannon, R. M. (SUT); Jameson, Andrew (SUT); Hobbs, G. (Commonwealth Scientific and Industrial Research Organisation (CSIRO)); Bailes, M. (SUT); Bhat, N. D. R. (Curtin University); Coles, W. A.(University of California San Diego); Dai, S. (CSIRO); Dempsey, J. (CSIRO); Keith, M. J. (University of Manchester); Kerr, M. (Naval Research Laboratory); Manchester, R. N.(CSIRO); Lasky, P. D. (Monash University (Monash)); Levin, Y. (Flatiron Institute); Parthasarathy, A. (SUT); Ravi, V. (Caltech Institute of Technology); Reardon, D. J. (Monash); Russell, C. J. (CSIRO); Sarkissian, J. M. (CSIRO); Spiewak, R. (SUT); van Straten, W. (Auckland University of Technology); Toomey, L. (CSIRO); Wang, J. B. (XAO); Wen, L. (UWA); You, X.-P. (SU); Zhang, L. (NAOC); Zhang, S. (PMO); Zhu, X.-J. (Monash)
on 11 Mar 2018; 07:02 UT
Credential Certification: Stefan Oslowski (stefanoslowski@swin.edu.au)
Subjects: Radio, Transient, Fast Radio Burst
The Parkes Pulsar Timing Array (Manchester et al. 2013) project monitors pulse times of arrival for 24 millisecond pulsars in the Galaxy on a fortnightly cadence using the multibeam receiver on the CSIRO 64-m Parkes Telescope. During these observations we commensally search for fast radio bursts (FRBs) using the BPSR backend and Heimdall algorithm (Barsdell et al. 2011). We have now detected our third FRB during the commensal search since commencing in June 2017. Astronomerâs Telegrams 11046 and 11385 describe the discovery of the two previous bursts and the same setup was used to discover the burst described below.
On 2018-03-11 at 04:11:54.80 UTC (2018-03-11.17493981481), we detected a burst with a signal to noise ratio (S/N) of 11.5, at the dispersion measure (DM) of 1575.6 pc cm^-3, in the field of the millisecond pulsar PSR J2129-5721 (DM = 31.58 pc cm^-3). The burst was detected in the beam 4 of the receiver, which at the time was pointed at a position of (RA, DEC 21:31:33.42, -57:44:26.7). The burst width (full width at half maximum) was 12 ms and the early estimate of fluence is 2.4 Jy ms. We note that the location of the burst within the telescope beam is highly uncertain (> 0.25 deg) at the moment; consequently, the fluence measurement is biased low (Macquart & Ekers 2017).
This position is approximately -43.7 degrees off of the galactic plane. The galactic contribution is estimated to be 45.287 pc cm^-3 from the NE2001 model (Cordes & Lazio, 2001) and 32.06 from the YWM16 model (Yao et al. 2017). Assuming host contribution to the DM of 100 pc cm-3, we estimate the redshift to be about 2.
No repetitions were seen during 103 minutes of a subsequent observation of the same field down to S/N limit of 10, nor during 5 minutes preceding the FRB 180311. Details of total amount of time on that field during the PPTA programme will be published elsewhere.
We encourage prompt follow-up with available facilities.
Two plots of the burst can be found here:
http://astronomy.swin.edu.au/~soslowski/FRB180311/
We used the interface available at http://www.atnf.csiro.au/research/pulsar/ymw16/ to estimate the redshift.
References:
FRB 180311 visualisation
