Computer Science
Scientific paper
Sep 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009cfdd.confe.131k&link_type=abstract
Chandra's First Decade of Discovery, Proceedings of the conference held 22-25 September, 2009 in Boston, MA. Edited by Scott Wo
Computer Science
Agn Jets
Scientific paper
NGC6764 is a nearby Seyfert 2/LINER galaxy with signatures of recent massive star formation. It is one of the few Seyfert galaxies with large (kpc-) scale radio bubbles in them. The ROSAT X-ray Observatory detected a highly variable X-ray source in NGC6764, which was suggestive of the presence of a compact AGN. However our recent Chandra observations failed to reveal a strong X-ray nucleus. The Chandra observations however did reveal kpc-scale diffuse X-ray emission coincident with the radio bubbles (Croston et al., 2008). Spectral fitting indicated that the X-ray emission was emanating from hot thermal gas, possibly excited by an AGN outflow. Here we present results from our recent parsec-scale radio imaging of NGC6764 with the Very Long Baseline Array (VLBA) at 1.6 and 4.9 GHz, which detected a faint jet-like structure, almost perpendicular to the kpc-scale radio/X-ray bubbles. We discuss the implications of this finding in the light of the conclusions drawn from our Chandra study on NGC6764.
Axon David
Croston Judith
Hardcastle Martin
Hota Ananda
Kharb Preeti
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