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dc.contributor.authorJohnston, S.
dc.contributor.authorKeane, E.
dc.contributor.authorBhandari, S.
dc.contributor.authorMacquart, Jean-Pierre
dc.contributor.authorTingay, Steven
dc.contributor.authorBarr, E.
dc.contributor.authorBassa, C.
dc.contributor.authorBeswick, R.
dc.contributor.authorBurgay, M.
dc.contributor.authorChandra, P.
dc.contributor.authorHonma, M.
dc.contributor.authorKramer, M.
dc.contributor.authorPetroff, E.
dc.contributor.authorPossenti, A.
dc.contributor.authorStappers, B.
dc.contributor.authorSugai, H.
dc.date.accessioned2017-03-27T03:58:23Z
dc.date.available2017-03-27T03:58:23Z
dc.date.created2017-03-27T03:46:39Z
dc.date.issued2017
dc.identifier.citationJohnston, S. and Keane, E. and Bhandari, S. and Macquart, J. and Tingay, S. and Barr, E. and Bassa, C. et al. 2017. Radio light curve of the galaxy possibly associated with FRB 150418. Monthly Notices of the Royal Astronomical Society. 465 (2): pp. 2143-2150.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/51683
dc.identifier.doi10.1093/mnras/stw2808
dc.description.abstract

We present observations made with the Australia Telescope Compact Array (ATCA), the Jansky Very Large Array (JVLA) and the Giant Metre-Wave Telescope of the radio source within the galaxy WISE~J071634.59-190039.2, claimed to be host of FRB~150418 by Keane et al. (2016). We have established a common flux density scale between the ATCA and JVLA observations, the main result of which is to increase the flux densities obtained by Keane et al. At a frequency of 5.5 GHz, the source has a mean flux density of 140uJy and is variable on short timescales with a modulation index of 0.36. Statistical analysis of the flux densities shows that the variations seen are consistent with refractive interstellar scintillation of the weak active galactic nucleus at the centre of the galaxy. It may therefore be the case that the FRB and the galaxy are not associated. However, taking into account the rarity of highly variable sources in the radio sky, and our lack of knowledge of the progenitors of FRBs as a class, the association between WISE~J071634.59-190039.2 and FRB~150418 remains a possibility.

dc.publisherOxford University Press
dc.titleRadio light curve of the galaxy possibly associated with FRB 150418
dc.typeJournal Article
dcterms.source.volume465
dcterms.source.number2
dcterms.source.startPage2143
dcterms.source.endPage2150
dcterms.source.issn0035-8711
dcterms.source.titleMonthly Notices of the Royal Astronomical Society
curtin.note

This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society. © 2016 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.

curtin.departmentCurtin Institute of Radio Astronomy (Physics)
curtin.accessStatusOpen access


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