2015A&A...578L..11M


C.D.S. - SIMBAD4 rel 1.7 - 2020.08.04CEST22:30:51

2015A&A...578L..11M - Astronomy and Astrophysics, volume 578, L11-11 (2015/6-1)

Real-time evolution of a large-scale relativistic jet.

MARTI J., LUQUE-ESCAMILLA P.L., ROMERO G.E., SANCHEZ-SUTIL J.R. and MUNOZ-ARJONILLA A.J.

Abstract (from CDS):

Astrophysical jets are ubiquitous in the Universe on all scales, but their large-scale dynamics and evolution in time are hard to observe since they usually develop at a very slow pace. We aim to obtain the first observational proof of the expected large-scale evolution and interaction with the environment in an astrophysical jet. Only jets from microquasars offer a chance to witness the real-time, full-jet evolution within a human lifetime, since they combine a ``short'', few parsec length with relativistic velocities. The methodology of this work is based on a systematic recalibraton of interferometric radio observations of microquasars available in public archives. In particular, radio observations of the microquasar GRS 1758-258 over less than two decades have provided the most striking results. Significant morphological variations in the extended jet structure of GRS 1758-258 are reported here that were previously missed. Its northern radio lobe underwent a major morphological variation that rendered the hotspot undetectable in 2001 and reappeared again in the following years. The reported changes confirm the Galactic nature of the source. We tentatively interpret them in terms of the growth of instabilities in the jet flow. There is also evidence of surrounding cocoon. These results can provide a testbed for models accounting for the evolution of jets and their interaction with the environment.

Abstract Copyright:

Journal keyword(s): stars: jets - ISM: jets and outflows - X-rays: binaries - galaxies: jets - stars: individual: GRS 1758-258

Simbad objects: 6

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Number of rows : 6

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 3C 48 QSO 01 37 41.2995845985 +33 09 35.079126038   16.62 16.20     ~ 2505 2
2 3C 286 Sy1 13 31 08.2885060664 +30 30 32.960825108   17.51 17.25     ~ 3733 1
3 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11605 0
4 PMN J1751-2524 Rad 17 51 51.26306 -25 24 00.0607           ~ 69 0
5 2XMM J180112.4-254436 LXB 18 01 12.40 -25 44 36.1           ~ 362 1
6 HD 226868 HXB 19 58 21.6758193269 +35 12 05.782512305 9.38 9.72 8.91 8.42   O9.7Iabpvar 3933 0

    Equat.    Gal    SGal    Ecl

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2020.08.04-22:30:51

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