Environment and luminosity of supernova remnants

Details Environment and luminosity of supernova remnants Environment and luminosity of supernova remnants

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006an....327..448h&link_type=abstract

Astronomische Nachrichten, Vol.327, Issue 5/6, p.448

Astronomy and Astrophysics

Astronomy

2

Ism: Supernova Remnants, Galaxies: Ism, Radio Continuum: Ism

Scientific paper

The explosion of supernovae and the evolution of their remnants (SNRs) accelerate cosmic rays over a vast range of timescales. Magnetic fields can be investigated indirectly through one of the observational signatures of this acceleration, namely radio synchrotron emission. With the aim of better understanding the role of the magnetic field in supernova evolution, we explore the variation of SNR radio luminosities with physical conditions in the surrounding interstellar medium. With a data set that comprises more than 90 individual SNRs in 10 galaxies, and a range of 3000 in ISM density and 104 in radio synchrotron luminosity, we find a significant correlation between the two quantities. The observed trends support the hypothesis that adiabatic compression of magnetic fields by itself is insufficient to explain the radio emission of the brighter and more luminous in SNRs.

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