The fading radio emission from sn 1961V: Evidence for a type II peculiar supernova?

Citation
Cj. Stockdale et al., The fading radio emission from sn 1961V: Evidence for a type II peculiar supernova?, ASTRONOM J, 122(1), 2001, pp. 283-287
Citations number
36
Categorie Soggetti
Space Sciences
Journal title
ASTRONOMICAL JOURNAL
ISSN journal
00046256 → ACNP
Volume
122
Issue
1
Year of publication
2001
Pages
283 - 287
Database
ISI
SICI code
0004-6256(200107)122:1<283:TFREFS>2.0.ZU;2-T
Abstract
Using the Very Large Array (VLA), we have detected radio emission from the site of SN 1961V in the Sc galaxy NGC 1058. With a peak flux density of 0.0 63 +/- 0.008 mJy beam(-1) at 6 cm and 0.147 +/- 0.026 mJy beam(-1) at 18 cm , the source is nonthermal, with a spectral index of -0.79 +/- 0.23. Within error, this spectral index is the same value reported for previous VLA obs ervations taken in 1984 and 1986. The radio emission at both wavelengths ha s decayed sine the mid-1980s observations with power-law indices of beta (2 0) (cm) = -0.69 +/- 0.23 and beta (6) (cm) = -1.75 +/- 0.16. We discuss the radio properties of this source and compare them with those of Type II rad io supernovae and luminous blue variables.