The binary pulsar: Preexplosion evolution

Journal Article · Thu Apr 15 04:00:00 EST 1976 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/154314· OSTI ID:7184455

Wheeler, J C

Data on PSR 1913+16 including the rotation of periastron, omega-dot=4degree-dot-below24 +- 0degreex04 yr/sup -1/, which is interpreted as a purely relativistic effect, are used to estimate the masses in the system at various stages in its evolution. The mass of the pulsar is found to be less than 1.82 M/sub sun/. The mass of the collapsed companion has probably changed little since it was formed, the estimate for its mass being in the range 1-2.7 M/sub sun/. The prepulsar star prior to explosion is found to have greater than the minimal Chandrasekhar mass approx.1.4 M/sub sun/. Prior to the final stage of mass transfer the system probably resembled Cen X-3 with a compact object orbiting a primary of 8-12 M/sub sun/. (AIP)

• Research Organization: Department of Astronomy, University of Texas at Austin
• OSTI ID: 7184455
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 205:2; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
640103 -- Astrophysics & Cosmology-- Quasi-Stellar
Radio
& X-Ray Sources-- (-1987)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BINARY STARS
COSMIC RADIO SOURCES
EXPLOSIONS
MASS
MOTION
PULSARS
ROTATION
STAR EVOLUTION
STARS