A comprehensive study of the X-ray structure and spectrum of IC 443

Abstract

view Abstract Citations (95) References (61) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS A Comprehensive Study of the X-Ray Structure and Spectrum of IC 443 Petre, R. ; Szymkowiak, A. E. ; Seward, F. D. ; Willingale, R. Abstract This paper presents the results of a comprehensive study of the X-ray emission from the supernova remnant IC 443, using the solid state spectrometer, IPC, and high-resolution images of the Einstein Observatory, and the medium-energy detector of the HEAO 1 A-2 experiment. A soft X-ray appearance was observed, highly atypical of a supernova remnant in the adiabatic phase, with little correlation between X-ray and optical or radio features. The best-fit models of the low-energy X-ray spectrum of the brightest area of the remnant suggest either that the remnant has not yet attained ionization equilibrium or that the X-rays arise in a multiphase medium. Pronounced soft X-ray spectral differences across the remnant are accounted for by variations in absorption by an intervening molecular cloud. The analysis suggests that, despite the atypical X-ray appearance, the X-ray emission in IC 443 is probably confined to a thin (0.1 pc) shell. Publication: The Astrophysical Journal Pub Date: December 1988 DOI: 10.1086/166922 Bibcode: 1988ApJ...335..215P Keywords: Astronomical Spectroscopy; Supernova Remnants; X Ray Sources; H Ii Regions; Molecular Clouds; Spectrophotometry; Stellar Envelopes; Astrophysics; NEBULAE: INDIVIDUAL ALPHANUMERIC: IC 443; NEBULAE: SUPERNOVA REMNANTS; X-RAYS: SOURCES full text sources ADS | data products SIMBAD (1)