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Search for pulsed γ-ray emission from radio pulsars in the COS-B data.

Caraveo, P. A.; Bignami, G. F.; Strong, A. W. +13 more

Pulsed gamma-ray emission from radio pulsars has been sought in a study of pulsar parameters for 145 radio observations, contemporary with gamma-ray observations, by the COS-B spacecraft. No signal has been detected in the 50 MeV-2 GeV energy range of the study, either globally or from individual pulsars. These results indicate that the average pr…

Galactic gamma radiation : the contribution from discrete sources.

Houston, B. P.; Wolfendale, A. W.

The contribution from discrete sources to the emission of galactic gamma rays is studied based on an analysis of the SAS II satellite data. The data are analyzed using cross-correlation techniques, and the results are interpreted using extensive Monte-Carlo simulations of the gamma-ray sky. These results are compared to earlier analyses based on t…

X-ray observations of bright galactic bulge sources in the vicinity of GX 5-1.

van der Klis, M.; Rappaport, S.

Results are presented for 44 d of pointed COS-B X-ray observations of the galactic center region around GX5-1. It is found that GX5-1 exhibits relatively rapid (≡10³ s) intensity transitions as well as flaring events with a typical time scale of ≡10⁴ s. Neither GX5-1, GX3+1 nor GX9+1 shows evidence of periodic intensity modul…

A method to improve the visibility of time-variable gamma-ray sources in structured background

Mayer-Hasselwander, H. A.; Oezel, M. E.

For the investigation of time variable gamma-ray sources (e.g. pulsars) embedded in a spatially structured background emission, the spatial selection of those gamma-ray events which are probable to increase the observed signal is not a trivial task. A method is presented which allows for the optimum event selection without introducing any statisti…