Confirmation of persistent radio jets in the microquasar LS 5039
Open Access
- 1 October 2002
- journal article
- letter
- Published by EDP Sciences in Astronomy & Astrophysics
- Vol. 393 (3) , L99-L102
- https://doi.org/10.1051/0004-6361:20021256
Abstract
We present here new observations conducted with the EVN and MERLIN of the persistent microquasar LS 5039 discovered by Paredes et al. ([CITE]) 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.Keywords
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