A survey of FRB fields: limits on repeatability
| Autor: | M. Caleb, E. Petroff, Michael Kramer, Cherry Ng, W. van Straten, A. Jameson, C.M.L. Flynn, Andrea Possenti, B. R. Barsdell, Ewan Barr, Ben Stappers, Simon Johnston, Matthew Bailes, Sarah Burke-Spolaor, D. J. Champion, Evan Keane |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Physics
High Energy Astrophysical Phenomena (astro-ph.HE) Millisecond Canadian Hydrogen Intensity Mapping Experiment media_common.quotation_subject Astronomy FOS: Physical sciences Astronomy and Astrophysics Time resolution Astrophysics Repeatability Magnetar Methods observational Universe Pulsar Space and Planetary Science Astrophysics - High Energy Astrophysical Phenomena media_common |
| Popis: | 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 $\leq$ 8.6 hours and rule out sources with periods 8.6 < P < 21 hours at the 90% confidence level. At P $\geq$ 21 hours our limits fall off as ~1/P. Dedicated and persistent observations of FRB source fields are needed to rule out repetition on longer timescales, a task well-suited to next generation wide-field transient detectors. 6 pages, 1 figure; accepted for publication in MNRAS |
| Databáze: | OpenAIRE |
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