The search for hot spots associated with the Cygnus X-3 relativistic jet

Details The search for hot spots associated with the Cygnus X-3 relativistic jet The search for hot spots associated with the Cygnus X-3 relativistic jet

Jun 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007ap%26ss.309..309m&link_type=abstract

Astrophysics and Space Science, Volume 309, Issue 1-4, pp. 309-313

Astronomy and Astrophysics

Astrophysics

1

Stars: Individual: Cygnus X-3, Radio Continuum: Steps, X-Rays: Binaries

Scientific paper

We report and shortly discuss here the observational work carried out in order to test the possibility that two previously detected radio sources, in the vicinity of the well known microquasar Cygnus X-3, could be hot spot tracers of interaction between its relativistic jet and the interstellar medium (ISM). The motivation behind this search is in part justified considering recent theoretical models of high energy γ-ray emission which strongly rely on the interaction sites of galactic relativistic jets with nearby ISM clouds. The results presented in this paper include an improved radio exploration of the several arc-minute field around Cygnus X-3 using the Very Large Array (VLA), as well as deep near infrared (NIR) imaging with the Calar Alto 3.5 m telescope. We anticipate here that our observations do not appear to support the initial hot spot hypothesis. Instead, the resulting images suggest that the two radio sources, originally believed to be hot spot candidates, are most likely background or foreground objects.

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