X-rays from the SNR 3C 391

Astronomy and Astrophysics – Astronomy

Scientific paper

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Supernova Remnants, X Ray Sources, Heao 2, Luminosity, Radio Sources (Astronomy)

Scientific paper

An X-ray map and spectral information were obtained from a short Einstein observation of 3C 391 (G31.9+0.0). Both X-ray and radio emission appear to come from an irregular shell ≡5arcmin in diameter. For a distance of 11 kpc the X-ray luminosity is at least 1035 ergs s-1. The luminosity, the radius, and the temperature are about as expected from a middle-aged SNR expanding into a medium with density a few tenths of an atom cm-3.

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