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 Citations (Scopus)

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)
JournalAstrophysical Journal
Volume635
Issue number2 II
DOIs
StatePublished - Dec 20 2005

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supernovae
ridges
ejecta
wind effects
explosion
x rays
stellar winds
supernova remnants
explosions
gas
inclusions
simulation
estimates
profiles
gases
interactions
young
effect

Keywords

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

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

The X-ray ridge surrounding sagittarius a* at the galactic center. / Rockefeller, Gabriel; Fryer, Christopher L.; Baganoff, Frederick K.; Melia, Fulvio.

In: Astrophysical Journal, Vol. 635, No. 2 II, 20.12.2005.

Research output: Contribution to journalArticle

Rockefeller, Gabriel ; Fryer, Christopher L. ; Baganoff, Frederick K. ; Melia, Fulvio. / The X-ray ridge surrounding sagittarius a* at the galactic center. In: Astrophysical Journal. 2005 ; Vol. 635, No. 2 II.
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