Abstract
view Abstract Citations (29) References (13) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS X-ray observations of the Antennae (NGC 4038/4039) Fabbiano, G. ; Trinchieri, G. Abstract The merging galaxies NGC 4038/39 were observed with the imaging proportional counter onboard the Einstein Observatory on two separate occasions, 12 months apart. The X-ray map seems to follow the optical contour of the two 'heads', although a softer X-ray component with a different spatial distribution might be present. The harder component is interpreted as being due to the integrated emission of single X-ray sources (like SNRs and X-ray binaries) in the two interacting galaxies. A harder point-like source might also be present in the contact region. The softer component could be thermal emission of gas heated by the interaction between NGC 4038 and NGC 4039. Moreover, a significant difference was observed between the two exposures. An additional X-ray source is present in the first image, but not in the second. If this source is associated with the Antennae, it could be either a very bright X-ray transient or a recent, optically undetected supernova. Publication: The Astrophysical Journal Pub Date: March 1983 DOI: 10.1086/183968 Bibcode: 1983ApJ...266L...5F Keywords: Galactic Radiation; Interacting Galaxies; X Ray Sources; Heao 2; Spatial Distribution; X Ray Binaries; Astronomy full text sources ADS | data products NED (4) SIMBAD (3)
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