English

A Southern sky search for repeating Fast Radio Bursts using the Australian SKA Pathfinder

High Energy Astrophysical Phenomena 2019-03-27 v1

Abstract

We have conducted a search for bright repeating Fast Radio Bursts in our nearby Universe with the Australian Square Kilometer Array Pathfinder (ASKAP) in single-dish mode. We used eight ASKAP 12-m dishes, each equipped with a Chequerboard Phased Array Feed forming 36 beams on the sky, to survey \sim30,000 deg2^{2} of the southern sky (90<δ<+30-90^{\circ} < \delta < +30^{\circ}) in 158 antenna days. The fluence limit of the survey is 22 Jyms. We report the detection of FRB 180515 in our survey. We found no repeating FRBs in a total mean observation of 3hrs per pointing divided into one-hour intervals, which were separated in time ranging between a day to a month. Using our non-detection, we exclude the presence of a repeating FRB similar to FRB 121102 closer than z=0.004z=0.004 in the survey area --- a volume of at least 9.4×1049.4 \times 10^4Mpc3^3 --- at 95% confidence.

Keywords

Cite

@article{arxiv.1903.06525,
  title  = {A Southern sky search for repeating Fast Radio Bursts using the Australian SKA Pathfinder},
  author = {S. Bhandari and K. W. Bannister and C. W. James and R. M. Shannon and C. M. Flynn and M. Caleb and J. D. Bunton},
  journal= {arXiv preprint arXiv:1903.06525},
  year   = {2019}
}

Comments

7 pages, 8 figures, accepted in MNRAS