Reprocessed UV pulses from the binary companions of X-ray pulsars

Details Reprocessed UV pulses from the binary companions of X-ray pulsars Reprocessed UV pulses from the binary companions of X-ray pulsars

Mar 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998a%26a...331.1037d&link_type=abstract

Astronomy and Astrophysics, v.331, p.1037-1045 (1998)

Astronomy and Astrophysics

Astrophysics

4

Binaries: Close, Stars: Individual: Hd 77581, Stars: Neutron, Pulsars: Individual: 4U 0900-40, Ultraviolet: Stars, X-Rays: Stars

Scientific paper

A search for reprocessed X-rays causing UV pulsations in the companion stars to X-ray pulsars was carried out in a 200 Angstroms wide bandpass centered at 1450 Angstroms using the High Speed Photometer on the Hubble Space Telescope. We observed the systems A0535+26 = HD245770, 4U0900-40 (Vela XR-1) = HD77581, A1118-61 = He3-640, and 4U1145-619 = HD102567. We confirm the existence of reprocessed X-rays reported in 4U0900-40 by Boroson et al. (1996) and give upper limits on the pulsed fraction in our UV bandpass present in the other systems. Archival IUE spectra are consistent with the finding of Boroson et al. that the UV radiation from HD77581 is emitted primarily in resonance emission lines from multiply ionized metals. The existence of two different pulse frequencies (UV and X-ray) in an X-ray binary system makes it dynamically equivalent to a double-lined spectroscopic binary. If the UV pulses are emitted from a site in the primary's outer atmosphere rather than its stellar wind, then the mass of the neutron star can be derived from the orbital phase dependence of the two frequencies. Based in part on observations with the Hubble Space Telescope obtained at the Space Telescope Science Institute, which is operated by AURA, Inc. under NASA contract NAS 5-26555

Affiliated with

Also associated with

No associations

Rating

Reprocessed UV pulses from the binary companions of X-ray pulsars 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 Reprocessed UV pulses from the binary companions of X-ray pulsars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reprocessed UV pulses from the binary companions of X-ray pulsars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1655800