A Universal Luminosity Function for Radio Supernova Remnants

Details A Universal Luminosity Function for Radio Supernova Remnants A Universal Luminosity Function for Radio Supernova Remnants

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21535603c&link_type=abstract

American Astronomical Society, AAS Meeting #215, #356.03; Bulletin of the American Astronomical Society, Vol. 42, p.540

Astronomy and Astrophysics

Astronomy

Scientific paper

We explore the supernova remnant (SNR) luminosity function (LF) at 20 cm in 19 nearby galaxies ranging from the SMC to Arp 220. The radio LF constrains SNR evolution, diffusive shock acceleration and magnetic field amplification in more evolved remnants (at or after the Sedov time). We find that the LF is well fit by a power law that has constant index and scaling that depends linearly on star formation rate. It appears that radio supernova remnant populations are strikingly invariant across a wide range of galaxies, and can be well fit with current models of particle acceleration and magnetic field amplification. Our analysis implies that the efficiency of cosmic ray production is constant across galaxies.

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