Possible X-ray counterparts of gamma-ray sources.
Abstract
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.
- Publication:
-
Nature
- Pub Date:
- April 1978
- DOI:
- 10.1038/272679a0
- Bibcode:
- 1978Natur.272..679M
- Keywords:
-
- Gamma Ray Astronomy;
- X Ray Sources;
- Cos-B Satellite;
- Position (Location);
- X Ray Spectra;
- Astrophysics;
- GAMMA RAY ASTRONOMY;
- X RAY SOURCES;
- COS-B SATELLITE;
- POSITION (LOCATION);
- X RAY SPECTRA