Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987mnras.225..985p&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 225, April 15, 1987, p. 985-993.
Astronomy and Astrophysics
Astronomy
4
Pulsars, Ultraviolet Astronomy, Variable Stars, X Ray Binaries, Iue, Supergiant Stars, Ultraviolet Spectra
Scientific paper
The IUE satellite has been used in a special trailed mode to search for modulation in the ultraviolet flux from the binary X-ray pulsars Vela X-1, A 0535+26 and 4U 1145-619. The trailing technique allows the UV spectrum from these sources to be sampled during the X-ray pulse cycle, with a resolution ≡1/10th of the pulse period. Modulations of 15 - 20 per cent have been observed from Vela X-1 on two occasions, and of 10 - 15 per cent from A 0535+26 on one occasion. The possible origin of this variation in terms of reprocessed X-rays and/or direct emission from the proximity of the neutron star magnetic poles is discussed. However, it is concluded that the most probable cause in Vela X-1 is an intrinsic variation in the flux from the supergiant B0.5 Ib companion star.
Coe Malcolm J.
Payne Bernard James
No associations
LandOfFree
The ultraviolet variability of binary X-ray pulsars - Observations of VELA X-1, A0535+26 and 4U1145l-619 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 The ultraviolet variability of binary X-ray pulsars - Observations of VELA X-1, A0535+26 and 4U1145l-619, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The ultraviolet variability of binary X-ray pulsars - Observations of VELA X-1, A0535+26 and 4U1145l-619 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1349308