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Hints for a fast precessing relativistic radio jet in LS I + 61° 303
Massi, Maria; Ribó i Panosa, Marc; Paredes i Poy, Josep Maria; Garrington, Simon T.; Peracaula i Bosch, Marta; Martí Ribas, Josep
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
Estels
Estels binaris de raigs X
Stars
X-rays double stars
Tots els drets reservats
Article
EDP Sciences
         

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