Implications of aging in young supernovae
Astrophysics
2007-05-23 v1
Abstract
We present here the combined radio spectrum from the Giant Metrewave Radio Telescope (GMRT) and Very Large Array (VLA) of type-IIb SN 1993J (age 11 years) and a type-Ic SN 2003bg (age 1 year). In SN 1993J, we find a break in the spectrum at 4 GHz and associate it with Synchrotron cooling break. Hence, we determine the magnetic field independent of equipartition assumption between relativistic electrons and magnetic energy. We also see a hint of break in the spectrum of SN 2003bg between 22-40 GHz. The spectrum of SN 2003bg is well described by the synchrotron self absorption model.
Keywords
Cite
@article{arxiv.astro-ph/0410291,
title = {Implications of aging in young supernovae},
author = {Poonam Chandra and Alak Ray},
journal= {arXiv preprint arXiv:astro-ph/0410291},
year = {2007}
}
Comments
To appear in proceedings of '1604 - 2004 Supernovae As Cosmological Lighthouses', ASP conference series