Optical and radio astrometry of the galaxy associated with FRB150418

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.

5 pages, 1 figure, accepted for publication in MNRAS Letters

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• The Host Galaxy and Redshift of the Repeating Fast Radio Burst FRB 121102
• The Repeating Fast Radio Burst FRB 121102 as Seen on Milliarcsecond Angular Scales
• The SUrvey for Pulsars and Extragalactic Radio Bursts I: Survey Description and Overview
• Radio light curve of the galaxy possibly associated with FRB150418
• Paving the way to simultaneous multi-wavelength astronomy
• On the nature of FRB 150418: clues from European VLBI Network and e-MERLIN observations