High-resolution radio observations of five supernova remnants

Astronomy and Astrophysics – Astronomy

Scientific paper

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Radio Astronomy, Radio Sources (Astronomy), Supernova Remnants, Brightness Temperature, High Resolution, Point Sources, Radio Telescopes, Sky Surveys (Astronomy), X Ray Sources

Scientific paper

Five supernova remnants have been mapped with high resolution using the Fleurs synthesis radio telescope. Four of the sources (G33.6 + 0.1, G309.2 - 0.6, G315.4 - 0.3 and G320.4 - 1.2) possess shell structures, albeit with considerable distortion; the fifth source, G308.7 + 0.0, has a centrally concentrated brightness distribution reminiscent of the Crab nebula but considerably more elongated. In the general direction of G320.4 - 1.2 there is considerable optical emission but only the brightest features seem to be associated with the radio source; currently available sky survey photographs show no associated optical nebulosity in the direction of the other four remnants.

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