A SPALLATION MODEL FOR (TI)-T-44 PRODUCTION IN CORE COLLAPSE SUPERNOVAE

作者：Ouyed A^*; Ouyed R; Leahy D; Jaikumar P

来源：Revista Mexicana de Astronomia y Astrofisica, 2014, 50(1): 77-85.

• nuclear reactions, nucleosynthesis, abundances-stars
• pre-main sequence, supernovae
• general-supernovae
• individual (SN1987A,Cassiopeia A)

Current core collapse supernovae (cc-SNe) models predict overproduction of Ti-44 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 Ti-44. We can achieve a Ti-44 production of similar to 10(-4) M circle dot) 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 Be-7 and Na-22. We discuss some of these signals by analyzing the late time light curve and gamma spectroscopy of our model.

• 出版日期2014-4