JOURNAL ARTICLE

Plasma diagnostics of supernova remnant 3C 400.2 by Suzaku observations.

  • Published In: Publications of the Astronomical Society of Japan, 2024, v. 76, n. 6. P. 1202 1 of 3

  • Database: Academic Search Ultimate 2 of 3

  • Authored By: Onuma, Masataka; Nobukawa, Kumiko K; Nobukawa, Masayoshi; Yamauchi, Shigeo; Uchiyama, Hideki 3 of 3

Abstract

This article focuses on the plasma diagnostics of the Galactic supernova remnant (SNR) 3C 400.2 using Suzaku X-ray observations. Contrary to previous studies that reported a recombining plasma (RP), the authors find that the SNR’s X-ray emission is better explained by a two-temperature model consisting of a low-temperature collisional ionization equilibrium (CIE) plasma from the interstellar medium (ISM) and a high-temperature ionizing plasma (IP) from the ejecta. The study attributes discrepancies with earlier results to differences in background estimation methods. Additionally, the authors report the discovery of an unidentified X-ray source near 3C 400.2, named Suzaku J1937.4+1718, which exhibits a 4.4 keV emission line possibly due to a redshifted iron line, suggesting an extragalactic origin as either an active galactic nucleus or a cluster of galaxies.

Additional Information

  • Source:Publications of the Astronomical Society of Japan. 2024/12, Vol. 76, Issue 6, p1202
  • Document Type:Article
  • Subject Area:Astronomy and Astrophysics
  • Publication Date:2024
  • ISSN:0004-6264
  • DOI:10.1093/pasj/psae081
  • Accession Number:181990888
  • Copyright Statement:Copyright of Publications of the Astronomical Society of Japan is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Looking to go deeper into this topic? Look for more articles on EBSCOhost.