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:
-
- Department of Physics and Astronomy, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4 Canada (Canada)
- 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}
}
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