Detection of a bright FRB with the Tianlai Cylinder Pathfinder Array
ATel #15342; Zijie Yu(NAOC), Furen Deng(NAOC), Chenhui Niu(NAOC), Jixia Li(NAOC), Shijie Sun(NAOC), Weiyang Wang(PKU), Yougang Wang(NAOC), Fengquan Wu(NAOC), Xuelei Chen(NAOC)
on 22 Apr 2022; 01:03 UT
Credential Certification: Chenhui Niu (peterniu@nao.cas.cn)
Subjects: Radio, Transient, Fast Radio Burst
We report the detection of a bright fast radio burst with the Tianlai Cylinder Pathfinder Array. We have been carrying out a blind FRB search with our 96 beam backend in the frequency range of 700-800 MHz. The data stream is recorded with a sampling time of 98.304 microseconds for 1024 frequency channels.
A bright burst was detected with a S/N~15 for ~2.2 ms duration at UT 17:26:40.368, April 14 2022 (MJD 59684.06018945136). An early estimate of the burst's peak flux is 128.4(\pm 10%) Jy and fluence is 204.0(\pm 10%) Jy ms. The burst has a best estimate of dispersion measure DM = 208.1\pm 0.5 pc cm^{-3}. The DM contributed by Milky Way in this direction is ~27 pc cm^{-3} (NE2001). Thus the DM-inferred redshift has an upper limit of z ~ 0.24. The J2000 coordinate of the burst is estimated to be RA = 13h04m21s(\pm 2m12s), DEC = +48\deg18'05"(\pm 10'19").
The Tianlai Cylinder Pathfinder Array is a radio interferometer located in Xinjiang, China(Li, et al. 2020), and operated by the National Astronomical Observatory, Chinese Academy of Sciences (NAOC). In December 2021, a FRB backend that is capable to form 96 beams and process data in real-time is installed. Since then, we carry out a blind FRB search operating in drift mode.
(Reference:
Li, J., Zuo, S., Wu, F., et al. 2020, Science China Physics, Mechanics, and Astronomy, 63, 129862. doi:10.1007/s11433-020-1594-8)
The waterfall plots for this FRB
