Comparative morphological analysis of Puppis A at radio, infrared, optical, and X-ray wavelengths

Details Comparative morphological analysis of Puppis A at radio, infrared, optical, and X-ray wavelengths Comparative morphological analysis of Puppis A at radio, infrared, optical, and X-ray wavelengths

Feb 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...350..266a&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 350, Feb. 10, 1990, p. 266-274.

Astronomy and Astrophysics

Astronomy

21

Infrared Astronomy, Interstellar Matter, Radio Astronomy, Supernova Remnants, Visible Spectrum, X Ray Astronomy, Infrared Sources (Astronomy), X Ray Sources

Scientific paper

This paper presents a new radio image of the supernova remnant Puppis A obtained with the Molonglo Observatory synthesis telescope (MOST) and the Parkes telescope, and infrared images of Puppis A and its surrounding medium obtained with the IRAS, and compares the remnant morphologies at radio, infrared, optical, and X-ray wavelengths. The radio image, which includes large-scale emission, shows a clumpy shell of emission with moderate central brightness. The infrared observations have the advantage of offering a detailed look at the medium into which the remnant is expanding. From the IR data, evidence is found of the remnant's expansion into a strong density gradient (distinct from the more gentle gradient of the Galactic plane). A strong isolated knot of enhanced X-ray and radio emission is a region of enhanced infrared emission as well. Detailed correlative analysis of the infrared, radio, and X-ray emission shows that the IR emission correlates very well with the X-ray emission, confirming the idea that the IR emission arises from dust that is collisionally heated by the shocked gas.

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