A model for the X-ray binary 4U1820-30.
- Miyaji, Shigeki
- JAN 1, 1986.
- Physical Description:
- 1 electronic document
- Restrictions on Access:
- Unclassified, Unlimited, Publicly available.
- Analysis of X-ray bursts from 4U1820-30 implies that the mass and radius of the neutron star are 1.4 solar mass and 8 km, respectively, and that the accreted material is hydrogen rich. On the other hand, the recently discovered orbital period of 685 seconds suggests that the companion is a degenerate star consisting mostly of helium. It is shown that apparent conflict can be resolved if the mass and radius of the companion are 0.08 solar mass and 2 x 10 to the 9th cm, respectively, with a mean hydrogen concentration by weight of less than X greater than = 0.1. The possible origin of such a binary system is discussed.
- NASA Technical Reports Server (NTRS) Collection.
- Document ID: 19880015178.
Accession ID: 88N24562.
- No Copyright.
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