The Luminous X-ray Hotspot In 4C 74.26: Jet Dynamics At Work

Details The Luminous X-ray Hotspot In 4C 74.26: Jet Dynamics At Work The Luminous X-ray Hotspot In 4C 74.26: Jet Dynamics At Work

Jun 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aspc..386...56e&link_type=abstract

Extragalactic Jets: Theory and Observation from Radio to Gamma Ray ASP Conference Series, Vol. 386, proceedings of the conferenc

Astronomy and Astrophysics

Astronomy

Scientific paper

The X-ray counterpart (which we confirm as an X-ray hotspot) to the southern radio hotspot of the largest-known radio quasar 4C 74.26 (z=0.104) is offset by 10 arcsec (19 kpc) from the radio hotspot complex. The peak of the X-ray emission may be due to synchrotron or inverse-Compton emission. If it is synchrotron emission then the hotspot must be the site of particle acceleration. The offset can be produced by either the jet exhibiting Scheuer's `dentist's drill' effect or, less likely, by a fast but low-momentum spine surrounded by a slower, higher-momentum sheath. If the emission arises from the inverse-Compton process, it must be inverse-Compton scattering of the CMB in a decelerating relativistic flow, implying that the jet is relativistic (Γ ≥ 2) out to a distance of at least 800 kpc.

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