A possible radio supernova in NGC 3310

Astronomy and Astrophysics – Astronomy

Scientific paper

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Supernovae, Galaxies, Radiosources (Astronomical), Supernovae, Starburst Galaxies And Infrared Excess Galaxies, Radio, Microwave

Scientific paper

As part of an ongoing radio supernova monitoring program, a compact, variable, steep spectrum radio source has been discovered ~65 arcsec (~4kpc) 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 × 1019 W Hz-1. The source luminosity, together with its variability characteristics, compact structure (< 17 mas) and its association with a group of HII regions suggests that it is a previously uncatalogued Type II radio supernova. There is also evidence of an X-ray source coincident with the radio position.

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