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

• DOI: 10.1051/0004-6361:20031760
• Publication Date: 2004-01-12T04:28:30Z
• Authors: M. Massi; M. Ribó; J. M. Paredes; S. T. Garrington; M. Peracaula; J. Martí
• Keywords: Precession; Merlin (protein); Very-long-baseline interferometry; Astrophysical jet

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 central source. bent S-shaped structure similar one displayed by well-known precessing SS 433. precession suggested in image becomes evident second one, showing one-sided significantly rotated with respect day before. We conclude that derived relativistic () explains puzzling previous VLBI results. Moreover, fact is fast could be explanation never understood short term (days) variability associated gamma-ray source 2CG 135+01/3EG J0241+6103.