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Date and Time of the Query: 2019-06-18 T19:46:02 PDT
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For refcode 1994ApJ...425L..77V:
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Copyright by American Astronomical Society. Reproduced by permission
1994ApJ...425L..77V THE RADIO COUNTERPART TO THE LUMINOUS X-RAY SUPERNOVA REMNANT IN NGC 6946 SCHUYLER D. VAN DYK Remote Sensing Division, Naval Research Laboratory, Code 7215, Washington, DC 20375-5351 RICHARD A SRAMEK P.O. Box 0, National Radio Astronomy Observatory, Socorro, NM 87801 KURT W. WEILER Remote Sensing Division, Naval Research Laboratory, Code 7215, Washington, DC 20375-5351 AND SCOTT D. HYMAN AND RACHEL E. VIRDEN Department of Physics, Sweet Briar College, Sweet Briar, VA 24595 Received 1993 December 20; accepted 1994 February 8 ABSTRACT We report detection from VLA observations of the radio counterpart to the very luminous X-ray and optical supernova remnant in the galaxy NGC 6946 (Schlegel 1994; Blair & Fesen 1994). We find it to be a very luminous radio source, being ~3 times more powerful than Cas A and within an order of magnitude of the extraordinarily powerful supernova remnant in NGC 4449. We suggest that the NGC 6946 supernova remnant is analogous to the NGC 4449 supernova remnant, but is probably much older. The high luminosity at radio wavelengths for the NGC 6946 supernova remnant likely results from interaction with a dense local environment. Subject headings: galaxies: individual: NGC 6946 - radio continuum: galaxies - radio continuum: ISM - supernova remnants
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