Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a....97..219g&link_type=abstract
Astronomy and Astrophysics, vol. 97, no. 2, Apr. 1981, p. 219-222. Research supported by the United States-Israel Binational Sc
Astronomy and Astrophysics
Astronomy
1
Bimetric Theories, Gravitation Theory, Neutron Stars, Stellar Mass, X Ray Spectra, X Ray Stars, Angular Momentum, Gamma Ray Astronomy, Red Shift, Stellar Luminosity, Stellar Mass Accretion, Stellar Models
Scientific paper
The expected X-ray emission from Cyg X-1, considered a massive neutron star (8-15 solar masses) according to some gravity theories, is studied within the framework of Rosen's bimetric gravity theory (1973, 1974). It is shown that in such massive neutron stars, the innermost stable orbit lies far outside the star surface, and therefore the X-ray spectrum consists of two components: a soft one emitted from a cold accretion disk and a hard one emitted by the matter striking the neutron star surface after spiraling down freely from the disk. The proposed model is shown to be in good agreement with the observed luminosities. The model predicts a surface gravitational redshift of 3.16 which could be tested by the future X- and gamma-ray detectors.
No associations
LandOfFree
CYG X-1 - A massive neutron star does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with CYG X-1 - A massive neutron star, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and CYG X-1 - A massive neutron star will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-781087