The pulsar in SN 1987A and the equation of state of dense matter

Journal Article · Mon Oct 01 04:00:00 EDT 1990 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/169297· OSTI ID:6231805

Grassi, F ^[1]

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1. Illinois Univ., Urbana (USA)

It has recently been shown that no neutron equation of state seems able to satisfy simultaneously the two conditions Omega not less than 1.24 x 10 to the 4th/s, the period observed for the object in SN 1987A, and Mmax (Omega = 0) not less than 1.44 solar mass, the mass of the binary pulsar PSR 1913 + 16. Attention is given to the possibility that the equation of state of quark core or pion-condensed core neutron stars, or of more exotic objects (quark stars, strange stars), may satisfy these two criteria. Consideration is also given to what an oscillating, rather than rotating, scenario for the object in SN 1987A would imply for the dense matter equation of state. 45 refs.

• OSTI ID: 6231805
• Journal Information: Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 362; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BOSONS
COSMIC RADIO SOURCES
ELEMENTARY PARTICLES
EQUATIONS
EQUATIONS OF STATE
ERUPTIVE VARIABLE STARS
FERMIONS
HADRONS
HARMONICS
MASS
MATTER
MESONS
NEUTRON STARS
NUCLEAR MATTER
OSCILLATIONS
PION CONDENSATION
PIONS
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
PULSARS
QUARK MATTER
QUARKS
STARS
SUPERNOVAE
VARIABLE STARS