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Title: Confirmation of persistent radio jets in the microquasar LS 5039
Author: Paredes i Poy, Josep Maria
Ribó Gomis, Marc
Ros, Eduardo
Martí Ribas, Josep
Massi, M.
Keywords: Estels
Estels binaris de raigs X
Jets (Astrofísica)
X-ray binaries
Radio astronomy
Astrophysical jets
Issue Date: 2002
Publisher: Springer Verlag
Abstract: We present here new observations conducted with the EVN and MERLIN of the persistent microquasar LS 5039 discovered by Paredes et al. (2000) with the VLBA. The new observations confirm the presence of an asymmetric two-sided jet reaching up to 1000 AU on the longest jet arm. The results suggest a bending of the jets with increasing distance from the core and/or precession. The origin and location of the high-energy gamma-ray emission associated with the system is discussed and an estimate of the magnetic field at the base of the jet given. Our results suggest a well collimated radio jet. We also comment on new observing strategies to be used with satellites and forthcoming detectors, since this persistent source appears to be a rather good laboratory to explore the accretion/ejection processes taking place near compact objects.
Note: Versió postprint del document publicat a:
It is part of: Astronomy and Astrophysics, 2002, vol. 393, p. L99-L102
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ISSN: 0004-6361
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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