Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001hell.confe.139g&link_type=abstract
"5th Hellenic Astronomical Conference, held 20-22 September, 2001 in Crete, Greece. Online at http://www.astro.auth.gr/elaset/he
Astronomy and Astrophysics
Astronomy
Scientific paper
We present the most recent results from the analysis of the radio data on the pc-scale structure of the powerful extragalactic radio source Hercules A, observed at 18 cm using the EVN-MERLIN array. A faint but compact radio source, coincident with the optical centre of Hercules A was detected by EVN at 0.018 arcs resolution. The flux of the radio core with EVN is 14.6 mJy. Its angular size is 18.1x7.0 mas with a position angle of ~ 139.3o. Its brightness temperature is 2x107 K. We have found that Hercules A is asymmetric on pc-scales: There is a SE emission, most probably from the eastern pc-scale jet, due to Doppler boosting. We conclude that if this is indeed the case then there is a misalignment between the pc- and kpc-scale jet (at least the eastern one) of 35o. This is quite unusual and may give us information about a dense opaque intergalactic/interstellar medium. MERLIN got confused by the diffuse radio structure of the radio galaxy.
Garrett Mike A.
Gizani Nectaria A. B.
Leahy Patrick J.
No associations
LandOfFree
The central engine of the powerful and unusual radio galaxy Hercules A does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The central engine of the powerful and unusual radio galaxy Hercules A, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The central engine of the powerful and unusual radio galaxy Hercules A will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1862968