Supernova 2008ax in NGC 4490

Details Supernova 2008ax in NGC 4490 Supernova 2008ax in NGC 4490

Mar 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008atel.1439....1s&link_type=abstract

The Astronomer's Telegram, #1439

Astronomy and Astrophysics

Astronomy

2

Radio, Novae, Supernovae

Scientific paper

Continuing radio monitoring of supernova 2008ax (CBET 1280) with the Very Large Array telescope (CBET 1299) show that the radio emission has clearly peaked at 22.5 GHz, 8.46 GHz, and 4.86 GHz and is declining rapidly. The most recent measurements from 21.06 March 2008 indicate a flux density of 2.63 +/- 0.21 mJy at 8.46 GHz and 3.45 +/- 0.24 mJy at 4.86 GHz. Very preliminary fitting of the data shows that the supernova is somewhat underluminous in the radio with a peak 6 cm radio spectral luminosity of ~4 x 10^26 erg/s/Hz, but not exceptionally so.

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