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Title: Spallation Model for the Titanium-Rich Supernova Remnant Cassiopeia A

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 {sup 56}Ni destruction and {sup 44}Ti creation under the right conditions. Basic calculations of the spallation products shows that a delay between the two explosions of {approx}5 days reproduces the observed abundance of {sup 44}Ti in Cas A and explains its low luminosity as a result of the destruction of {sup 56}Ni. Our results could have important implications for light curves of subluminous as well as superluminous supernovae.

Authors:
; ;  [1];  [2]
  1. Department of Physics and Astronomy, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4 Canada (Canada)
  2. Department of Physics and Astronomy, California State University Long Beach, 1250 Bellflower Boulevard, Long Beach, California 90840 (United States)
Publication Date:
OSTI Identifier:
21612147
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 107; Journal Issue: 15; Other Information: DOI: 10.1103/PhysRevLett.107.151103; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ABUNDANCE; EXPLOSIONS; LUMINOSITY; NEUTRON STARS; NICKEL 56; NUCLEOSYNTHESIS; QUARKS; SPALLATION; SPALLATION FRAGMENTS; SUPERNOVA REMNANTS; SUPERNOVAE; TITANIUM 44; BETA DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; BINARY STARS; COSMIC RADIO SOURCES; DAYS LIVING RADIOISOTOPES; ELECTRON CAPTURE RADIOISOTOPES; ERUPTIVE VARIABLE STARS; EVEN-EVEN NUCLEI; FERMIONS; INTERMEDIATE MASS NUCLEI; ISOTOPES; NICKEL ISOTOPES; NUCLEAR FRAGMENTS; NUCLEAR REACTIONS; NUCLEI; OPTICAL PROPERTIES; PHYSICAL PROPERTIES; RADIOISOTOPES; STARS; SYNTHESIS; TITANIUM ISOTOPES; VARIABLE STARS; YEARS LIVING RADIOISOTOPES

Citation Formats

Ouyed, Rachid, Leahy, Denis, Ouyed, Amir, and Jaikumar, Prashanth. Spallation Model for the Titanium-Rich Supernova Remnant Cassiopeia A. United States: N. p., 2011. Web. doi:10.1103/PHYSREVLETT.107.151103.
Ouyed, Rachid, Leahy, Denis, Ouyed, Amir, & Jaikumar, Prashanth. Spallation Model for the Titanium-Rich Supernova Remnant Cassiopeia A. United States. https://doi.org/10.1103/PHYSREVLETT.107.151103
Ouyed, Rachid, Leahy, Denis, Ouyed, Amir, and Jaikumar, Prashanth. 2011. "Spallation Model for the Titanium-Rich Supernova Remnant Cassiopeia A". United States. https://doi.org/10.1103/PHYSREVLETT.107.151103.
@article{osti_21612147,
title = {Spallation Model for the Titanium-Rich Supernova Remnant Cassiopeia A},
author = {Ouyed, Rachid and Leahy, Denis and Ouyed, Amir and Jaikumar, Prashanth},
abstractNote = {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 {sup 56}Ni destruction and {sup 44}Ti creation under the right conditions. Basic calculations of the spallation products shows that a delay between the two explosions of {approx}5 days reproduces the observed abundance of {sup 44}Ti in Cas A and explains its low luminosity as a result of the destruction of {sup 56}Ni. Our results could have important implications for light curves of subluminous as well as superluminous supernovae.},
doi = {10.1103/PHYSREVLETT.107.151103},
url = {https://www.osti.gov/biblio/21612147}, journal = {Physical Review Letters},
issn = {0031-9007},
number = 15,
volume = 107,
place = {United States},
year = {Fri Oct 07 00:00:00 EDT 2011},
month = {Fri Oct 07 00:00:00 EDT 2011}
}