A possible radio supernova in the outer part of NGC 3310

Details A possible radio supernova in the outer part of NGC 3310 A possible radio supernova in the outer part of NGC 3310

2004-05-17

arxiv.org/abs/astro-ph/0405317v1

Mon.Not.Roy.Astron.Soc. 351 (2004) L66

Astronomy and Astrophysics

Astrophysics

5 pages, 3 figures. Accepted by MNRAS

Scientific paper

10.1111/j.1365-2966.2004.08004.x

As part of an on-going radio supernova monitoring program, we have discovered a variable, compact steep spectrum radio source ~65 arcsec (~4 kpc) from the centre of the starburst galaxy NGC 3310. If the source is at the distance of NGC 3310, then its 5 GHz luminosity is ~3 x 10^{19} WHz^-1. The source luminosity, together with its variability characteristics, compact structure (<17 mas) and its association with a group of HII regions, leads us to propose that it is a previously uncatalogued type II radio supernova. A search of archival data also shows an associated X-ray source with a luminosity similar to known radio supernova.

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