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arXiv · 1607.08257

Optical and radio astrometry of the galaxy associated with FRB150418

C. G. Bassa·R. Beswick·S. J. Tingay·E. F. Keane·S. Bhandari·S. Johnston·T. Totani·N. Tominaga·N. Yasuda·B. W. Stappers·E. D. Barr·M. Kramer·A. Possenti
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Abstract

A fading radio source, coincident in time and position with the fast radio burst FRB150418, has been associated with the galaxy WISE J071634.59-190039.2. Subsequent observations of this galaxy have revealed that it contains a persistent, but variable, radio source. We present e-MERLIN, VLBA, and ATCA radio observations and Subaru optical observations of WISE J071634.59-190039.2 and find that the persistent radio source is unresolved and must be compact (<0.01 kpc), and that its location is consistent with the optical centre of the galaxy. We conclude that it is likely that WISE J071634.59-190039.2 contains a weak radio AGN.

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C. G. Bassa, R. Beswick, S. J. Tingay, E. F. Keane, S. Bhandari, S. Johnston, T. Totani, N. Tominaga, N. Yasuda, B. W. Stappers, E. D. Barr, M. Kramer, A. Possenti. 2016-07-27. Optical and radio astrometry of the galaxy associated with FRB150418. https://doi.org/10.1093/mnrasl/slw151

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