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ARPN Journal of Science and Technology >> Volume 7, Issue 2, November 2017

ARPN Journal of Science and Technology


Radio Light Curves of Supernova SN 2008iz in M82 Galaxy

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Author N. Kimani, A. Brunthaler ,K. M. Menten ,I. Martí-vidal , K. Sendlinger
ISSN 2225-7217
On Pages 480-482
Volume No. 4
Issue No. 8
Issue Date September 01, 2014
Publishing Date September 01, 2014
Keywords Supernova, SN 2008iz, Radio continuum, M82 galaxy



Abstract

We report on multi-frequency Very Large Array (VLA) radio observations for an on-going monitoring campaign of supernova SN 2008iz in the nearby irregular galaxy M82. We fit two light curve models to the data, a simple power-law and a simplified weiler model, yielding a decline index, β = -1.23±0.01 and -1.41±0.02, respectively. The late time radio light curve evolution shows a flux density enhancement at 1500 days since the explosion at all frequencies. The flux density enhancement does not show signs of decline from results obtained so far. The enhancement is attributed to SN 2008iz expanding shock wave encounter with a clumpy dense circumstellar medium.


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