2004A&A...414L...1M


Query : 2004A&A...414L...1M

2004A&A...414L...1M - Astronomy and Astrophysics, volume 414, L1-4 (2004/1-4)

Hints for a fast precessing relativistic radio jet in LS I +61deg303.

MASSI M., RIBO M., PAREDES J.M., GARRINGTON S.T., PERACAULA M. and MARTI J.

Abstract (from CDS):

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 (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.

Abstract Copyright:

Journal keyword(s): stars: individual: LS I +61°303, 2CG 135+01, 3EG J0241+6103 - X-rays: binaries - radio continuum: stars - gamma-rays: observations - gamma-rays: theory

Simbad objects: 3

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Number of rows : 3
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 LS I +61 303 HXB 02 40 31.6644419688 +61 13 45.593918580 11.27 11.61 10.75 10.19 9.55 B0Ve 843 2
2 SS 433 HXB 19 11 49.5647697480 +04 58 57.827127648   16.854 14.643     A3/7I 2106 4
3 Granat 1915+105 HXB 19 15 11.55576 +10 56 44.9052           ~ 2596 0

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