Physics
Scientific paper
Apr 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008atnf.prop.1609f&link_type=abstract
ATNF proposal C1532, Semester: April, 2008
Physics
Extragalactic, Atca
Scientific paper
We are proposing to monitor the hard state low luminosity AGN NGC 7213 throughout semester 2008APRS, contemporaneously with regular intensive observations in the X-ray band with RXTE. Our primary goal for the entire campaign is to see if an individual AGN can be established to follow the radio:X-ray correlation - with slope +0.6 - which has been established for X-ray binaries, and whose presence in AGN is implied by the recent discovery of 'fundamental planes' of black hole activity. Currently no AGN has been established to show such a correlation, leaving a key piece of the arguments for scale-free 'grand unification' of black holes of all masses untested. This is a unique opportunity to test this paradigm. Our results to date show a strong radio/X-ray correlation but with a significantly shorter lag than expected, so we speculate that we may be seeing beamed emission from the jet in a 'mini-blazar' configuration. We propose to test this idea this semester with continued monitoring to further constrain the lag, and a 12 hour observation to accurately measure the source polarisation.
Bell Martin
Fender Rob
Tzioumis Anastasios
Uttley Phil
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