Title:
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Hints for a fast precessing relativistic radio jet in LS I+61·303
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Author:
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Massi, M.; Ribó Gomis, Marc; Paredes i Poy, Josep Maria; Garrington, S. T.; Peracaula i Bosch, Marta; Martí Ribas, Josep
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Other authors:
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Universitat de Barcelona |
Abstract:
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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. |
Subject(s):
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-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 |
Rights:
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(c) Springer Verlag, 2004
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Document type:
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Article Article - Accepted version |
Published by:
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Springer Verlag
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