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

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 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

© Astronomy & Astrophysics, 2004, vol.414, núm.1, p.L1 - L4

EDP Sciences

Author: Massi, Maria
Ribó i Panosa, Marc
Paredes i Poy, Josep Maria
Garrington, Simon T.
Peracaula i Bosch, Marta
Martí Ribas, Josep
Date: 2004
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 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
Format: application/pdf
Citation: Massi, M., Ribó, M., Paredes, J.M., Garrington, S.T., Peracaula, M. i Martí, J. (2004). Hints for a fast precessing relativistic radio jet in LS I + 61° 303. Astronomy & Astrophysics, 414 (1), L1 - L4. Recuperat 15 setembre de 2011, a http://dx.doi.org/10.1051/0004-6361:20031760
ISSN: 0004-6361 (versió paper)
1432-0746 (versió electrònica)
Document access: http://hdl.handle.net/10256/3565
Language: eng
Publisher: EDP Sciences
Collection: Reproducció digital del document publicat a: http://dx.doi.org/10.1051/0004-6361:20031760
Articles publicats (D-ATC)
Is part of: © Astronomy & Astrophysics, 2004, vol.414, núm.1, p.L1 - L4
Rights: Tots els drets reservats
Subject: Estels
Estels binaris de raigs X
Stars
X-rays double stars
Title: Hints for a fast precessing relativistic radio jet in LS I + 61° 303
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

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