Computer Science
Scientific paper
Apr 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010atnf.prop.3023s&link_type=abstract
ATNF proposal C2096, Semester: April, 2010
Computer Science
Compact Binaries And/Or Black-Holes, Atca
Scientific paper
We have discovered an extraordinary radio/optical/X-ray microquasar in the Sculptor galaxy NGC7793 (d~3.9 Mpc). It has: a large (250 x 120 pc) shock-ionized nebula, emitting in the radio bands, H-alpha and HeII 4686; prominent FRII-like radio lobes, more luminous than the rest of the cocoon; an X-ray core, location of the active BH; a blue optical counterpart to the X-ray core; a pair of X-ray hot spots, aligned with the radio lobes and the X-ray core, typical signature of energy transport via a collimated jet. It is the prototypical example of jet/ISM interaction around a non-nuclear BH. The radio nebula has an integrated flux of ~2 mJy at 6cm. We propose deeper observations at 3+6cm, and additional observations at 13cm, with which we will: a) search for the radio core; b) verify the presence of flat-spectrum spurts at the base of the jet, on either side of the X-ray core; c) map the cocoon at 13cm and obtain a 3-frequency spectral index map; d) determine the polarimetric properties of the source, and the characteristics of the magnetoionic environment.
Broderick John J.
Corbel Stephane
Motch Christian
Pakull Manfred
Soria Roberto
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