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Title: | Hints for a fast precessing relativistic radio jet in LS I+61·303 |
Author: | Massi, M. Ribó Gomis, Marc Paredes i Poy, Josep Maria Garrington, S. T. Peracaula i Bosch, Marta Martí Ribas, Josep |
Keywords: | Estels Estels binaris de raigs X Radioastronomia Raigs gamma Astronomia de raigs gamma Astrofísica Stars X-ray binaries Radio astronomy Gamma rays Gamma ray astronomy Astrophysics |
Issue Date: | 2004 |
Publisher: | Springer Verlag |
Abstract: | Here we discuss two consecutive MERLIN observations of the X-ray binary LS I +61◦303. 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 struct ure 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 (β=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. |
Note: | Versió postprint del document publicat a: http://dx.doi.org/10.1051/0004-6361:20031760 |
It is part of: | Astronomy and Astrophysics, 2004, vol. 414, num. 1, p. L1-L4 |
URI: | http://hdl.handle.net/2445/45340 |
Related resource: | http://dx.doi.org/10.1051/0004-6361:20031760 |
ISSN: | 0004-6361 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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