Orbital precession in Hercules X-1

Details Orbital precession in Hercules X-1 Orbital precession in Hercules X-1

Dec 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apj...210l.133d&link_type=abstract

Astrophysical Journal, vol. 210, Dec. 15, 1976, pt. 2, p. L133-L136.

Astronomy and Astrophysics

Astrophysics

12

Eclipsing Binary Stars, Precession, Pulsars, Stellar Motions, X Ray Stars, Cross Correlation, Data Reduction, Stellar Mass Ejection, Stellar Occultation

Scientific paper

It is noted that the 35-day X-ray high-low cycle of Her X-1 could be explained in terms of periodic obscuration of the source by a tilted and precessing 'slaved' accretion disk, which would require precession of the mass-shedding star and, consequently, a precessing binary orbit. Four months of Uhuru data obtained in 1972 are analyzed to determine whether the orbital precession can be detected as a Doppler modulation in the arrival times of the 1.24-sec X-ray pulsations. The precession geometry is examined, the test for precession is outlined, and a marginally significant indication of orbital precession in the Hz Her/Her X-1 system is obtained. Possible biases in the analysis are evaluated, and the spin-axis misalignment of HZ Her is estimated from the measured tilt of the orbit.

Affiliated with

Also associated with

No associations

Rating

Orbital precession in Hercules X-1 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 Orbital precession in Hercules X-1, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Orbital precession in Hercules X-1 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1048910