Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978grsa.rept..371d&link_type=abstract
In its Gamma Ray Spectry. In Astrophys. p 371-385 (SEE N78-31971 22-88)
Astronomy and Astrophysics
Astronomy
1
Astronomical Spectroscopy, Cyclotron Resonance, Emission Spectra, Hercules Nova, Line Spectra, Oso-8, X Ray Sources, Balloon-Borne Instruments, Temperature Gradients, X Ray Astronomy, X Ray Spectroscopy
Scientific paper
Observations of Her X-1 were obtained during its ON-state in September, 1977, with the high-energy X-ray detector on board OSO-8. Upper limits on the line fluxes at 60 and 135 keV based on these observations are above, and hence consistent with, the positive results reported by Trumper, et al from a balloon flight during the same time interval. A detailed analysis of the time-variable et al background spectrum suggests that the line emission, especially in the time-averaged spectrum of Her X-1 previously reported by other workers at 25, 60, and 135 keV, is due to instrumental effects. The spectrum obtained with OSO-8 in September, 1977, is considerably steeper than that observed in pre-1976 balloon flights. These results are consistent with the results obtained by Trumper showing a decrease in the effective temperature of Her X-1 between May, 1976, and September, 1977.
Crannell Carol J.
Cutler E. P.
Dennis Brian R.
Dolan James F.
Frost Kenneth J.
No associations
LandOfFree
Upper limits on the cyclotron lines from HER X-1 as observed with OSO-8 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 Upper limits on the cyclotron lines from HER X-1 as observed with OSO-8, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Upper limits on the cyclotron lines from HER X-1 as observed with OSO-8 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-944879