X-ray emission from gamma-ray sources in the galactic anticentre region

Details X-ray emission from gamma-ray sources in the galactic anticentre region X-ray emission from gamma-ray sources in the galactic anticentre region

Dec 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979natur.282..692s&link_type=abstract

Nature, vol. 282, Dec. 13, 1979, p. 692-695. NASA-supported research.

Astronomy and Astrophysics

Astronomy

8

Early Stars, Galactic Structure, Gamma Ray Astronomy, Pulsars, Spaceborne Astronomy, X Ray Sources, Cosmic Rays, Diffuse Radiation, Galactic Radiation, Heao 1, Interstellar Gas, Sky Surveys (Astronomy), Stellar Luminosity, Supernova Remnants

Scientific paper

An X-ray survey of three high energy gamma-ray sources in the galactic anticenter region conducted using the large area sky survey instrument on HEAO 1 is presented. The sensitivity of this survey is highest reported, and two, and possibly three, X-ray sources were detected in the vicinity of gamma 195+5. Three new X-ray sources have been discovered within a few degrees of CG176-7, but none overlaps the gamma-ray error box. These results demonstrate that gamma-ray sources like CG195+4 and CG176-7 have emission characteristics different from the Crab pulsar, but may be similar to the Vela pulsar. Alternatively, the lack of detectable X-ray flux suggests that the gamma-ray emission arises from cosmic-ray interactions in dense interstellar clouds. An interesting feature of the new X-ray sources is that four of them may be associated with early-type stars which exhibit emission lines.

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