Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978natur.272..679m&link_type=abstract
Nature, vol. 272, Apr. 20, 1978, p. 679-681.
Astronomy and Astrophysics
Astronomy
24
Gamma Ray Astronomy, X Ray Sources, Cos-B Satellite, Position (Location), X Ray Spectra
Scientific paper
The results are presented of a survey regarding the X-ray source positions which fall within the error boxes of 10 unidentified gamma-ray sources observed with the aid of the COS-B satellite. In three cases, including CG 135-1, CG 312-1, and CG 327-0, an X-ray source was found within the gamma-ray error box. However, because of the large uncertainty regarding the gamma-ray source positions, the positional coincidence is not necessarily conclusive. It is, therefore, necessary to take into account additional information on the spectral or temporal characteristics of the X-ray sources. It is found that the X-ray source 4U 02416 plus 1 is a possible candidate as the X-ray-counterpart of CG 135 plus 1 in connection with both spectral hardness characteristics and positional coincidence.
Apparao Krishna M. V.
Baity William A.
Bradt Hale
Helmken H.
Maraschi Laura
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