Distribution of cosmic gamma rays in the galactic anticenter region as observed by SAS-2The high energy (above 35 MeV) gamma ray telescope flown on the second Small Astronomy Satellite has collected over one thousand gamma rays from the direction of the galactic anticenter. In addition to the diffuse galactic emission the distribution indicates a strong pulsed contribution from the Crab nebula with the same period and phase as the NP0532 pulsar. There also seems to be an excess in the direction of (gal. long. ? 195 deg; gal. lat ? +5 deg) where there is a region containing old supernova remnants. Search for gamma ray pulsations from other pulsars in the region do not show any statistically significant signal. The general intensity distribution of the gamma rays away from the plane appear to be similar to nonthermal radio emission brightness contours.
Document ID
19760043891
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Kniffen, D. A. (Middle East Technical Univ. Ankara, Turkey)
Fichtel, C. E. (Middle East Technical Univ. Ankara, Turkey)
Hartman, R. C. (Middle East Technical Univ. Ankara, Turkey)
Thompson, D. J. (NASA Goddard Space Flight Center Greenbelt, Md., United States)
Ozel, M. E. (Middle East Technical Univ. Ankara, Turkey)
Tumer, T. (Middle East Technical University Ankara, Turkey)
Bignami, G. F. (Middle East Technical Univ. Ankara, Turkey)
Ogelman, H. (Middle East Technical Univ. Ankara, Turkey)