Hints for a fast precessing relativistic radio jet in LS I+61°303

被引：104

作者：

Massi, M

Ribó, M

Paredes, JM

Garrington, ST

Peracaula, M

Martí, J

机构：

[1] Max Planck Inst Radioastron, D-53121 Bonn, Germany

[2] CEA Saclay, Serv Astrophys, F-91191 Gif Sur Yvette, France

[3] Univ Barcelona, Dept Astron & Meteorol, E-08028 Barcelona, Spain

[4] Univ Manchester, Nuffield Radio Astron Labs, Jodrell Bank, Macclesfield SK11 9DL, Cheshire, England

[5] Univ Girona, Inst Informat & Aplicac, Girona 17071, Spain

[6] Univ Jaen, Escuela Politecn Super, Dept Fis, Jaen 23071, Spain

来源：

ASTRONOMY & ASTROPHYSICS | 2004年 / 414卷 / 01期

关键词：

stars : individual : LS I+61 degrees 303; 2CG; 135+01; 3EG J0241+6103; X-rays : binaries; radio continuum : stars; gamma-rays : observations; gamma-rays : theory;

D O I：

10.1051/0004-6361:20031760

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Here we discuss two consecutive MERLIN observations of the X-ray binary LS I+61degrees303. The first observation shows a double-sided jet extending up to about 200 AU on both sides of a central source. The jet shows a bent S-shaped structure similar to the one displayed by the well-known precessing jet of SS 433. The precession suggested in the first MERLIN image becomes evident in the second one, showing a one-sided bent jet significantly rotated with respect to the jet of the day before. We conclude that the derived precession of the relativistic (beta=0.6) jet explains puzzling previous VLBI results. Moreover, the fact that the precession is fast could be the explanation of the never understood short term ( days) variability of the associated gamma-ray source 2CG 135+01/3EG J0241+6103.

引用

页码：L1 / L4

页数：4

共 25 条

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