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dc.contributor.authorTingay, S. J.
dc.contributor.authorTrott, C. M.
dc.contributor.authorWayth, R. B.
dc.contributor.authorBernardi, G.
dc.contributor.authorBowman, J. D.
dc.contributor.authorBriggs, F.
dc.contributor.authorDeshpande, A. A.
dc.contributor.authorGaensler, B. M.
dc.contributor.authorGreenhill, L. J.
dc.contributor.authorHancock, P. J.
dc.contributor.authorHazelton, B. J.
dc.contributor.authorJohnston-Hollitt, M.
dc.contributor.authorKaplan, D. L.
dc.contributor.authorMitchell, Daniel A.
dc.contributor.authorMorales, Miguel F.
dc.contributor.authorMurphy, T.
dc.contributor.authorOberoi, Divya
dc.contributor.authorPrabu, T.
dc.contributor.authorShankar, N. Udaya
dc.contributor.authorSrivani, K. S.
dc.contributor.authorSubrahmanyan, R.
dc.contributor.authorWebster, R. L.
dc.contributor.authorWilliams, A.
dc.contributor.authorLonsdale, Colin John
dc.contributor.authorMcWhirter, Stephen R.
dc.contributor.authorWilliams, Christopher Leigh
dc.contributor.authorFeng, Lu
dc.contributor.authorCappallo, Roger J
dc.contributor.authorMorgan, Edward H
dc.date.accessioned2016-01-05T00:37:44Z
dc.date.available2016-01-05T00:37:44Z
dc.date.issued2015-12
dc.date.submitted2015-07
dc.identifier.issn1538-3881
dc.identifier.issn0004-6256
dc.identifier.urihttp://hdl.handle.net/1721.1/100692
dc.description.abstractWe present the results of a pilot study search for fast radio bursts (FRBs) using the Murchison Widefield Array (MWA) at low frequencies (139–170 MHz). We utilized MWA data obtained in a routine imaging mode from observations where the primary target was a field being studied for Epoch of Reionization detection. We formed images with 2 s time resolution and 1.28 MHz frequency resolution for 10.5 hr of observations, over 400 square degrees of the sky. We de-dispersed the dynamic spectrum in each of 372,100 resolution elements of 2 × 2 arcmin[superscript 2], between dispersion measures of 170 and 675 pc cm[superscript −3]. Based on the event rate calculations in Trott et al., which assume a standard candle luminosity of 8 × 10[superscript 37] Js[superscript −1], we predict that with this choice of observational parameters, the MWA should detect (~10, ~2, ~0) FRBs with spectral indices corresponding to (−2, −1, 0), based on a 7σ detection threshold. We find no FRB candidates above this threshold from our search, placing an event rate limit of <700 above 700 Jy ms per day per sky and providing evidence against spectral indices α < -1.2 (S ∞ μ[superscript a]). We compare our event rate and spectral index limits with others from the literature. We briefly discuss these limits in light of recent suggestions that supergiant pulses from young neutron stars could explain FRBs. We find that such supergiant pulses would have to have much flatter spectra between 150 and 1400 MHz than have been observed from Crab giant pulses to be consistent with the FRB spectral index limit we derive.en_US
dc.language.isoen_US
dc.publisherIOP Publishingen_US
dc.relation.isversionofhttp://dx.doi.org/10.1088/0004-6256/150/6/199en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourceIOP Publishingen_US
dc.titleA SEARCH FOR FAST RADIO BURSTS AT LOW FREQUENCIES WITH MURCHISON WIDEFIELD ARRAY HIGH TIME RESOLUTION IMAGINGen_US
dc.typeArticleen_US
dc.identifier.citationTingay, S. J., C. M. Trott, R. B. Wayth, G. Bernardi, J. D. Bowman, F. Briggs, R. J. Cappallo, et al. “A SEARCH FOR FAST RADIO BURSTS AT LOW FREQUENCIES WITH MURCHISON WIDEFIELD ARRAY HIGH TIME RESOLUTION IMAGING.” The Astronomical Journal 150, no. 6 (December 10, 2015): 199. © 2015 The American Astronomical Societyen_US
dc.contributor.departmentHaystack Observatoryen_US
dc.contributor.departmentMIT Kavli Institute for Astrophysics and Space Researchen_US
dc.contributor.mitauthorCappallo, Roger J.en_US
dc.contributor.mitauthorFeng, L.en_US
dc.contributor.mitauthorLonsdale, Colin Johnen_US
dc.contributor.mitauthorMcWhirter, Stephen R.en_US
dc.contributor.mitauthorMorgan, Edward H.en_US
dc.contributor.mitauthorWilliams, Christopher Leighen_US
dc.relation.journalThe Astronomical Journalen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dspace.orderedauthorsTingay, S. J.; Trott, C. M.; Wayth, R. B.; Bernardi, G.; Bowman, J. D.; Briggs, F.; Cappallo, R. J.; Deshpande, A. A.; Feng, L.; Gaensler, B. M.; Greenhill, L. J.; Hancock, P. J.; Hazelton, B. J.; Johnston-Hollitt, M.; Kaplan, D. L.; Lonsdale, C. J.; McWhirter, S. R.; Mitchell, D. A.; Morales, M. F.; Morgan, E.; Murphy, T.; Oberoi, D.; Prabu, T.; Shankar, N. Udaya; Srivani, K. S.; Subrahmanyan, R.; Webster, R. L.; Williams, A.; Williams, C. L.en_US
dc.identifier.orcidhttps://orcid.org/0000-0001-7130-208X
dc.identifier.orcidhttps://orcid.org/0000-0003-0422-2324
mit.licensePUBLISHER_POLICYen_US


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