Journal
ASTROPHYSICAL JOURNAL
Volume 753, Issue 1, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0004-637X/753/1/61
Keywords
galaxies: active; galaxies: starburst; gamma rays: galaxies; ISM: jets and outflows
Categories
Funding
- NASA Fermi Guest Investigator Program
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Although accretion onto supermassive black holes in other galaxies is seen to produce powerful jets in X-ray and radio, no convincing detection has ever been made of a kpc-scale jet in the Milky Way. The recently discovered pair of 10 kpc tall gamma-ray bubbles in our Galaxy may be signs of earlier jet activity from the central black hole. In this paper, we identify a gamma-ray cocoon feature in the southern bubble, a jet-like feature along the cocoon's axis of symmetry, and another directly opposite the Galactic center in the north. Both the cocoon and jet-like feature have a hard spectrum with spectral index similar to-2 from 1 to 100 GeV, with a cocoon total luminosity of (5.5 +/- 0.45) x 10(35) and luminosity of the jet-like feature of (1.8 +/- 0.35) x 10(35) erg s(-1) at 1-100 GeV. If confirmed, these jets are the first resolved gamma-ray jets ever seen.
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