Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...268..116k&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 268, no. 1, p. 116-122.
Astronomy and Astrophysics
Astrophysics
8
Magellanic Clouds, Pulsars, Stellar Spectra, X Ray Binaries, Bremsstrahlung, Emission Spectra, Fourier Analysis, Plasma Temperature
Scientific paper
The binary X-ray pulsar SMC X- 1 has been observed at hard X-rays with the High Energy X-Ray Experiment (HEXE) on nine occasions between Nov. 1987 and March 1989. A thin thermal bremsstrahlung fit to the phase averaged spectrum yields a plasma temperature (14.4 +/- 1.3) keV and a luminosity above (1.1 +/- 0.1) x 10 exp 38 erg/s in the 20-80 keV band. Pulse period values have been established for three observations, confirming the remarkably stable spin-up trend of SMC X-1. In one of the three observations the pulse profile was seen to deviate from a dominant double pulsation, while at the same time the pulsed fraction was unusually large. For one observation we determined for the first time the pulsed fraction in narrow energy bands. It increases with photon energy from about 20 percent up to over 60 percent in the energy range from 20 to 80 keV.
Döbereiner Stephan
Efremov Valeri
Englhauser Jakob
Gruber Duane E.
Kaniovsky S.
No associations
LandOfFree
Spectral and temporal properties of the X-ray pulsar SMC X-1 at hard X-rays 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 Spectral and temporal properties of the X-ray pulsar SMC X-1 at hard X-rays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spectral and temporal properties of the X-ray pulsar SMC X-1 at hard X-rays will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1271698