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arXiv · 1109.2124

A Spallation Model for the Titanium-rich Supernova Remnant Cassiopeia A

Rachid Ouyed·Denis Leahy·Amir Ouyed·Prashanth Jaikumar
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Abstract

Titanium-rich subluminous supernovae are rare and challenge current SN nucleosynthesis models. We present a model in which ejecta from a standard Supernova is impacted by a second explosion of the neutron star (a Quark-nova), resulting in spallation reactions that lead to 56Ni destruction and 44Ti creation under the right conditions. Basic calculations of the spallation products shows that a delay between the two explosions of ~ 5 days reproduces the observed abundance of 44Ti in Cas A and explains its low luminosity as a result of the destruction of 56Ni. Our results could have important implications for lightcurves of subluminous as well as superluminous supernovae.

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Rachid Ouyed, Denis Leahy, Amir Ouyed, Prashanth Jaikumar. 2011-09-09. A Spallation Model for the Titanium-rich Supernova Remnant Cassiopeia A. https://doi.org/10.1103/physrevlett.107.151103

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