The X-ray ridge surrounding sagittarius a* at the galactic center

Gabriel Rockefeller, Christopher L. Fryer, Frederick K. Baganoff, Fulvio Melia

Research output: Contribution to journalArticle

18 Scopus citations

Abstract

We present the first detailed simulation of the interaction between the supernova explosion that produced Sgr A East and the wind-swept inner ∼2 pc region at the Galactic center. The passage of the supernova ejecta through this medium produces an X-ray ridge ∼9″-15′ to the northeast of the supermassive black hole Sagittarius A* (Sgr A*). We show that the morphology and X-ray intensity of this feature match very well with recently obtained Chandra images, and we infer a supernova remnant age of less than 2000 yr. This young age - a factor of 3-4 lower than previous estimates - arises from our inclusion of stellar wind effects in the initial (preexplosion) conditions in the medium. The supernova does not clear out the central ∼0.2 pc region around Sgr A* and does not significantly alter the gas profile around the central black hole upon passage through the Galactic center.

Original languageEnglish (US)
Pages (from-to)L141-L144
JournalAstrophysical Journal
Volume635
Issue number2 II
DOIs
StatePublished - Dec 20 2005

Keywords

  • Accretion, accretion disks
  • Black hole physics
  • Galaxy: center
  • Radiation mechanisms: thermal
  • Stars: winds, outflows
  • X-rays: diffuse background

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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