The radio counterpart to the luminous X-ray supernova remnant in NGC 6946

Abstract

view Abstract Citations (27) References (14) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Radio Counterpart to the Luminous X-Ray Supernova Remnant in NGC 6946 van Dyk, Schuyler D. ; Sramek, Richard A. ; Weiler, Kurt W. ; Hyman, Scott D. ; Virden, Rachel E. 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. Publication: The Astrophysical Journal Pub Date: April 1994 DOI: 10.1086/187314 Bibcode: 1994ApJ...425L..77V Keywords: Radio Astronomy; Radio Sources (Astronomy); Spiral Galaxies; Supernova Remnants; Very Large Array (Vla); Cassiopeia A; Centimeter Waves; Decimeter Waves; Stellar Luminosity; Superhigh Frequencies; Ultrahigh Frequencies; X Ray Sources; Astronomy; GALAXIES: INDIVIDUAL NGC NUMBER: NGC 6946; RADIO CONTINUUM: GALAXIES; RADIO CONTINUUM: ISM; ISM: SUPERNOVA REMNANTS full text sources ADS | data products SIMBAD (6) NED (2)