The high energy X-ray spectrum of 4U 1700-37 observed from OSO 8

Details The high energy X-ray spectrum of 4U 1700-37 observed from OSO 8 The high energy X-ray spectrum of 4U 1700-37 observed from OSO 8

May 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...238..238d&link_type=abstract

Astrophysical Journal, Part 1, vol. 238, May 15, 1980, p. 238-243.

Astronomy and Astrophysics

Astrophysics

17

Eclipsing Binary Stars, Neutron Stars, Oso-8, Stellar Spectra, X Ray Sources, X Ray Spectra, Light Curve, Satellite Observation

Scientific paper

The most intense hard X-ray source in the confused region in Scorpius has been identified as 4U 1700-37 (=HD 153919). Observations extending over three binary periods in 1978 September were carried out with the high-energy X-ray spectrometer on OSO 8. The 3.4 day modulation is seen above 20 keV with the intensity during eclipse being consistent with zero flux. The photo number spectrum from 20 to 150 keV is well represented by a single power law with a photo number spectral index of -2.77 + or - 0.35 or by a thermal bremsstrahlung spectrum with kT = 27 (+15, -7)keV. The counting rate above 20 keV outside of eclipse shows no evidence for the 96.8 minute X-ray modulation previously reported at lower energies. Despite the difficulties that exist in reconciling both the lack of periodic modulation in the emitted X-radiation and the orbital dynamics of the system with our currently accepted theories of the evolution and physical properties of neutron stars, the observed properties of 4U 1700-37 are all consistent with the source being a spherically accreting neutron star rather than a black hole.

Affiliated with

Also associated with

No associations

Rating

The high energy X-ray spectrum of 4U 1700-37 observed from 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 The high energy X-ray spectrum of 4U 1700-37 observed from OSO 8, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The high energy X-ray spectrum of 4U 1700-37 observed from OSO 8 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1359072