G33.6 + 0.1 - A shell type supernova remnant with unusual structure

Abstract

view Abstract Citations (22) References (18) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS G33.6+0.1: A Shell Type Supernova Remnant With Unusual Structure Velusamy, T. ; Becker, R. H. ; Seward, F. D. Abstract The morphology of Supernova Remnant G33.6 + 0.1 (Kes 79) has been studied in the X-rays with Einstein and in the radio wavelengths using the VLA. Multifrequency high resolution observations of the VLA at 327, 1500, and 5000 MHz are used to study the radio spectrum and polarization. The radio emission shows well formed outer shell structure and very bright central emission. Although the overall distribution of spectral index (about -0.6 to -0.75) is consistent with that of shell type remnants, the bright filamentary emission along the 'inner ring' has relatively flatter spectrum (alpha about -0.4). Both radio and X-rays show strong central emission; existence of a plerion near the center cannot be ruled out. The X-ray image does not show the characteristic limb brightening for shell type SNRs. The X-ray and radio morphology may be understood in terms of very thick shell and the bright central emission as due to reverse shock. Publication: The Astronomical Journal Pub Date: August 1991 DOI: 10.1086/115901 Bibcode: 1991AJ....102..676V Keywords: Radio Sources (Astronomy); Supernova Remnants; Very Large Array (Vla); X Ray Imagery; Emission Spectra; H Ii Regions; Radio Astronomy; Radio Emission; Astrophysics; NEBULAE: SUPERNOVA REMNANTS full text sources ADS | data products SIMBAD (16)