EVLA Radio Monitoring of the Nova Explosion in V407 Cyg

Details EVLA Radio Monitoring of the Nova Explosion in V407 Cyg EVLA Radio Monitoring of the Nova Explosion in V407 Cyg

Sep 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011head...12.1102c&link_type=abstract

American Astronomical Society, HEAD meeting #12, #11.02

Astronomy and Astrophysics

Astronomy

Scientific paper

V407 Cyg is a binary system composed of a Mira giant and a white dwarf that underwent nova outburst in March 2010; the outburst was detected by Fermi, making it the first nova explosion ever detected in gamma rays. Our on-going EVLA monitoring of V407 Cyg's 2010 outburst provides some of the best temporal and spectral coverage (1--50 GHz) ever acquired for a nova in the radio. Here, we describe our observations and show that they are not consistent with canonical models for novae, which ascribe the radio emission to thermal bremsstrahlung from an expanding spherically symmetric shock. We explore possible explanations for V407 Cyg's unusual radio properties, developing them in cooperation with models of the X-ray emission, and taking into account the strong interaction between the ejecta and the giant companion's wind.

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