Deceleration from entrainment in the jet of the quasar 1136-135?

被引：23
|
作者：
Tavecchio, F
Maraschi, L
Sambruna, RM
Gliozzi, M
Cheung, CC
Wardle, JFC
Urry, CM
机构：
[1] Osserv Astron Brera, I-20121 Milan, Italy
[2] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA
[3] George Mason Univ, Dept Phys & Astron, Fairfax, VA 22030 USA
[4] MIT, Kavli Inst Astrophys & Space Res, Cambridge, MA 02139 USA
[5] Brandeis Univ, Dept Phys, Waltham, MA 02454 USA
[6] Yale Univ, Dept Astron, New Haven, CT 06520 USA
来源：
ASTROPHYSICAL JOURNAL | 2006年 / 641卷 / 02期
关键词：
galaxies : active; galaxies : jets; quasars : individual ( PKS 1136-135); X-rays : galaxies;
D O I：
10.1086/500536
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
By modeling the multiwavelength emission of successive regions in the jet of the quasar PKS 1136-135, we find indications that the jet suffers deceleration near its end on a (deprojected) scale of similar to 400 kpc. We adopt a continuous flow approximation, and we discuss the possibility that the inferred deceleration from a Lorentz factor of Gamma = 6.5 to 2.5 is induced by entrainment of external gas. Some consequences of this scenario are discussed.
引用
收藏
页码：732 / 739
页数：8
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