Spallation Model for the Titanium-Rich Supernova Remnant Cassiopeia A

Journal Article · Fri Oct 07 00:00:00 EDT 2011 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.107.151103· OSTI ID:21612147

Ouyed, Rachid; Leahy, Denis; Ouyed, Amir ^[1]; Jaikumar, Prashanth ^[2]

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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)

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.

• OSTI ID: 21612147
• Journal Information: Physical Review Letters, Vol. 107, Issue 15; Other Information: DOI: 10.1103/PhysRevLett.107.151103; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

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