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|Title:||A survey of FRB fields: limits on repeatability||Authors:||Petroff, E.
Keane, E. F.
van Straten, W.
Barr, E. D.
Barsdell, B. R.
Champion, D. J.
Stappers, B. W.
|Issue Date:||2015||Journal:||MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY||Number:||454||Issue:||1||First Page:||457||Abstract:||Several theories exist to explain the source of the bright, millisecond duration pulses known as fast radio bursts (FRBs). If the progenitors of FRBs are non-cataclysmic, such as giant pulses from pulsars, pulsar-planet binaries, or magnetar flares, FRB emission may be seen to repeat. We have undertaken a survey of the fields of eight known FRBs from the High Time Resolution Universe survey to search for repeating pulses. Although no repeat pulses were detected the survey yielded the detection of a new FRB, described in Petroff et al. (2015a). From our observations we rule out periodic repeating sources with periods P ≤ 8.6 h and rule out sources with periods 8.6 < P < 21 h at the 90 per cent confidence level. At P ≥ 21 h our limits fall off as ̃1/P. Dedicated and persistent observations of FRB source fields are needed to rule out repetition on longer time-scales, a task well-suited to next generation wide-field transient detectors.||Acknowledgments:||We thank the referee for the useful comments and suggestions related to this manuscript. The Parkes radio telescope and the Australia Telescope Compact Array are part of the Australia Telescope National Facility which is funded by the Commonwealth of Australia for operation as a National Facility managed by CSIRO. Parts of this research were conducted by the Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO), through project number CE110001020. This work was performed on the gSTAR national facility at Swinburne University of Technology. gSTAR is funded by Swinburne and the Australian Government's Education Investment Fund. EP would like to thank P. Edwards for assisting with scheduling additional observations for this work.||URI:||http://hdl.handle.net/20.500.12386/23633||URL:||https://academic.oup.com/mnras/article/454/1/457/1130397
|Appears in Collections:||1.01 Articoli in rivista|
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