Tuesday, August 7, 2012

1208.1130 (Amir Ouyed et al.)

A Spallation Model for 44Ti production in Core Collapse Supernovae    [PDF]

Amir Ouyed, Rachid Ouyed, Denis Leahy, Prashanth Jaikumar
Current cc-SN models predict overproduction of 44Ti compared to observations. We present a model for an alternative channel where a cc-SN explosion is followed by a neutron star detonation (Quark Nova or QN), resulting in a spallation reaction of SN ejecta that produces 44Ti. We can achieve a 44Ti production of ~ 10^-4 Msun with our model under the right time delay between the QN and the SN. Our model also produces unique signals not found in standard, cc-SN nucleosynthesis models. Some of these unique signals include a significantly large production of 7Be and 22Na. We discuss some of these signals by analyzing the late time light curve and gamma spectroscopy of our model.
View original: http://arxiv.org/abs/1208.1130

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