2008/05/15 by Shigeo Yamauchi, Masaru Ueno, Katsuji Koyama +1
Physics and Astronomy · #Astronomy #Astrophysical Phenomena and Observations #Astrophysics #Astrophysics and Cosmic Phenomena #Emission spectrum #Galactic plane #Galaxy #Gamma-ray bursts and supernovae #Interstellar medium #Line (geometry) #Near-Earth supernova #Nuclear physics #Optics #Physics #Plasma #Spectral line #Supernova #Supernova remnant #X-ray #astro-ph
paper · pdf · doi:10.1093/pasj/60.5.1143
Accepted for publication in PASJ
arxiv created 2008/05/15 · openalex publication_date 2008/10/25 · arxiv updated 2015/05/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
X-ray images and spectra of 5 cataloged supernova remnants (SNRs: G12.0-0.1, G346.6-0.2, G348.5+0.1, G348.7+0.3, and G355.6-0.0) observed in the ASCA galactic plane survey are presented. The sizes of X-ray emission from G12.0-0.1, G348.5+0.1, G348.7+0.3, and G355.6-0.0 are comparable to their radio structures, while that of G346.6-0.2 is smaller. The X-ray spectra of all the SNRs were heavily absorbed by interstellar matter with N\rm H/gt1022cm-2. The spectrum of G355.6-0.0 exhibited emission lines, indicating that the X-ray emission has a thin thermal plasma origin, and was well represented by a two-temperature thin thermal emission model. On the other hand, no clear emission-line features were found in the spectra of the others, and the spectra could be represented by either a thin thermal emission model or a power-law model.