Abstract
We report the results of a CGRO multi-instrument series of observations of the unidentified gamma-ray source 2CG 135+1 and of its possible counterpart, the peculiar radio source GT 0236+610 coincident with the Be star LSI +61° 303. Previous observations of 2CG 135+1 are consistent with a positional coincidence of the gamma-ray source with LSI +61° 303. Since January 1994, we continuously monitored the time variable radio source GT 0236+610 with the Green Bank Interferometer. For the first time, gamma-ray observations of 2CG 135+1 can be correlated with an extensive database of radio observations of LSI +61° 303. We present OSSE and COMPTEL data obtained during the period MayJune 1994, and BATSE data for the period April 1994-January 1995. We discuss the possible time variability of the 7-ray emission and spectral properties of 2CG 135+1. Understanding the nature of 2CG 135+1 may be of crucial importance for the interpretation of a class of unidentified and time variable gammaray sources in the Galaxy.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 243-248 |
| Number of pages | 6 |
| Journal | Astronomy and Astrophysics Supplement Series |
| Volume | 120 |
| Issue number | 4 |
| State | Published - Dec 1 1996 |
Keywords
- Gamma-rays
- Individual
- LSI +61 303; 2CG 135+1
- Observations -x-rays
- Stars stars
ASJC Scopus subject areas
- Physics and Astronomy(all)