Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...215l..61p&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor, vol. 215, July 15, 1977, p. L61-L64.
Astronomy and Astrophysics
Astrophysics
51
Binary Stars, Fluorescence, Iron, Line Spectra, Pulsars, X Ray Spectra, Doppler Effect, Frequency Shift, K Lines, Spectral Line Width, Stellar Spectra, X Ray Stars
Scientific paper
The X-ray spectrum of Her X-1 was observed in the energy range from 2 to 24 keV from August 29 to September 3, 1975. Emission features are observed near the K-alpha iron-line energy which exhibit both broadening and a double line structure. The total luminosity in these features is about 4 by 10 to the 35th power ergs/s. Iron line fluorescence from an opaque cool (not exceeding 1 million K) shell of material at the Alfven surface provides the necessary luminosity in this feature. The double line structure and the line energy width can be due to Doppler shifts if the shell is forced to corotate with the pulsar at a radius of at least 800 million cm. Implications of this model regarding physical conditions near Her X-1 are discussed.
Becker Robert H.
Boldt Elihu A.
Holt Stephen S.
Pravdo Steven Howard
Serlemitsos Peter J.
No associations
LandOfFree
X-ray spectra of Hercules X-1. I - Iron line fluorescence from a subrelativistic shell 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 X-ray spectra of Hercules X-1. I - Iron line fluorescence from a subrelativistic shell, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and X-ray spectra of Hercules X-1. I - Iron line fluorescence from a subrelativistic shell will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1559761