論文

査読有り
2016年6月

Galactic Centre hypershell model for the North Polar Spurs

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
  • Y. Sofue
  • ,
  • A. Habe
  • ,
  • J. Kataoka
  • ,
  • T. Totani
  • ,
  • Y. Inoue
  • ,
  • S. Nakashima
  • ,
  • H. Matsui
  • ,
  • M. Akita

459
1
開始ページ
108
終了ページ
120
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1093/mnras/stw623
出版者・発行元
OXFORD UNIV PRESS

The bipolar-hypershell (BHS) model for the North Polar Spurs (NPS-E, -W, and Loop I) and counter southern spurs (SPS-E and -W) is revisited based on numerical hydrodynamical simulations. Propagations of shock waves produced by energetic explosive events in the Galactic Centre are examined. Distributions of soft X-ray brightness on the sky at 0.25, 0.7, and 1.5 keV in the +/- 50 degrees x +/- 50 degrees region around the Galactic Centre are modelled by thermal emission from high-temperature plasma in the shock-compressed shell considering shadowing by the interstellar H I and H-2 gases. The result is compared with the ROSAT wide field X-ray images in R2, 4, and 6 bands. The NPS and southern spurs are well reproduced by the simulation as shadowed dumbbell-shaped shock waves. We discuss the origin and energetics of the event in relation to the starburst and/or active galactic nucleus activities in the Galactic Centre.

Web of Science ® 被引用回数 : 12

リンク情報
DOI
https://doi.org/10.1093/mnras/stw623
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000376386600009&DestApp=WOS_CPL