Apsidal motion and the pulsating transient X-ray source A 0538-66

Details Apsidal motion and the pulsating transient X-ray source A 0538-66 Apsidal motion and the pulsating transient X-ray source A 0538-66

Jul 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...136..326b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 136, no. 2, July 1984, p. 326-330.

Astronomy and Astrophysics

Astrophysics

3

Binary Stars, Pulsars, Stellar Motions, X Ray Sources, X Ray Stars, Apsides, B Stars, Orbital Elements, Orbital Mechanics, Periodic Variations, Stellar Evolution, Stellar Models

Scientific paper

It is pointed out that current models which are proposed for the pulsating transient X-ray binary system A 0538-66 imply an apsidal-motion period which, according to the 'classical' formula, may be as low as about 150 yr. Such a short period should show up as a small but significant difference between the sidereal binary period and the accurately known outburst cycle of 16.6515 + or - 0.0005 d since the latter is attributed to periastron passage. Therefore, after a single accurate determination of the sidereal binary period (which is, in principle, possible because of the presence of the fast pulsar), the apsidal-motion period can be immediately calculated. This would given important information on the internal structure of the massive, post mass-gaining B star in this system. A discussion of the evolutionary stage of A 0538-66 is given. It is concluded that the system is rather old in the sense that the X-ray pulsar is spun back up to it present very short rotation period.

Affiliated with

Also associated with

No associations

Rating

Apsidal motion and the pulsating transient X-ray source A 0538-66 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 Apsidal motion and the pulsating transient X-ray source A 0538-66, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apsidal motion and the pulsating transient X-ray source A 0538-66 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1704044