Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.14/199607
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- Title
- A 3pc scale jet-driven outflow from SGR A*
- Related
- Astrophysical journal letters, Vol. 758, No. 1, (2012),
- DOI
- 10.1088/2041-8205/758/1/L11
- Publisher
- Institute of Physics Publishing
- Date
- 2012
- Author/Creator
- Yusef-Zadeh, F
- Author/Creator
- Arendt, R
- Author/Creator
- Bushouse, H
- Author/Creator
- Cotton, W
- Author/Creator
- Haggard, D
- Author/Creator
- Pound, M. W
- Author/Creator
- Roberts, D. A
- Author/Creator
- Royster, M
- Author/Creator
- Wardle, M
- Description
- The compact radio source Sgr A* is coincident with a 4 × 10⁶ M⊙ black hole at the dynamical center of the Galaxy and is surrounded by dense orbiting ionized and molecular gas. We present high-resolution radio continuum images of the central 3′ and report a faint continuous linear structure centered on Sgr A* with a P.A. 60°. The extension of this feature appears to be terminated symmetrically by two linearly polarized structures at 8.4GHz, 75″ from Sgr A*. A number of weak blobs of radio emission with X-ray counterparts are detected along the axis of the linear structure. The linear structure is best characterized by a mildly relativistic jet from Sgr A* with an outflow rate 10⁻⁶ M⊙yr⁻¹. The near and far sides of the jet are interacting with orbiting ionized and molecular gas over the last 1-3 hundred years and are responsible for a 2″ hole, the "minicavity," characterized by disturbed kinematics, enhanced Fe II/III line emission, and diffuse X-ray gas. The estimated kinetic luminosity of the outflow is ~1.2 × 10⁴¹erg s⁻¹, so the interaction with the bar may be responsible for the Galactic center X-ray flash inferred to be responsible for much of the fluorescent Fe Kα line emission from the inner 100pc of the Galaxy.
- Description
- 8 page(s)
- Subject Keyword
- accretion, accretion disks
- Subject Keyword
- black hole physics
- Subject Keyword
- Galaxy: center
- Resource Type
- journal article
- Organisation
- Macquarie University. Dept. of Physics and Astronomy
- Identifier
- http://hdl.handle.net/1959.14/199607
- Identifier
- ISSN:2041-8205
- Identifier
- mq_res-ext-2-s2.0-84866646962
- Language
- eng
- Reviewed
