Role of Magnetic Fields in Type Ia Supernovae

Details Role of Magnetic Fields in Type Ia Supernovae Role of Magnetic Fields in Type Ia Supernovae

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21910807p&link_type=abstract

American Astronomical Society, AAS Meeting #219, #108.07

Physics

Scientific paper

We've developed methods to calculate the transport of gamma rays, X-rays, positrons and low energy photons in the rapidly expanding envelopes of Type Ia Supernovae in a single, consistent, fully three-dimensional simulation. This allows the calculation of the late-time near infrared and lightcurves from the three dimensional geometry of the supernova envelope created by varying models of the initial thermonuclear runaway. It also allows us to use these observations as a unique probe of the magnetic field of the Supernova envelope, by predicting the effect of these fields on the positrons which account for most of the energy transport at late times.
Using these methods, we find that a magnetic field of some 106 Gauss is necessary to explain some already existing infrared spectra, and that an observational campaign on existing instruments will allow us to further separate geometrical effects from those of the magnetic field. Of particular interest is that these fields are shown to be strong enough, in some cases, to have a large effect on the physics of the thermonuclear runaway during the initial explosion.

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