Thermal material in relativistic jets

A. Celotti, Z. Kuncic, M. J. Rees, J. F. C. Wardle
1998 Monthly notices of the Royal Astronomical Society  
A B S T R A C T The properties of thermal material co-existing with non-thermal emitting plasma and strong magnetic fields in the powerful jets of active galactic nuclei (AGN) are examined. Theoretical and observational constraints on the physical properties of this 'cold' component are determined. While the presence of a thermal component occupying a fraction ϳ10 ¹8 of the jet volume is possible, it seems unlikely that such a component is capable of contributing significantly to the total jet
more » ... nergy budget, since the thermal reprocessing signatures that should appear in the spectra have not, as yet, been detected. ᭧ 1998 RAS, MNRAS 293, 288-298 1 Recent observations with the SAX satellite also show signs of absorption in the soft X-ray band of the radio-loud quasar 3C 273 (Grandi et al. 1997 ). 2 Interestingly, it has been argued (Eilek & Caroff 1979 ) that these cooling processes in particular can stabilize relativistic plasma against thermal instability triggered by the presence of localized regions of cool gas.
doi:10.1046/j.1365-8711.1998.01124.x fatcat:s2axwv4h2fawhldoagkfabdft4