EDP Sciences
Free access
Issue
A&A
Volume 394, Number 1, October IV 2002
Page(s) 193 - 203
Section Formation, structure and evolution of stars
DOI http://dx.doi.org/10.1051/0004-6361:20021086


A&A 394, 193-203 (2002)
DOI: 10.1051/0004-6361:20021086

A search for microquasar candidates at low galactic latitudes

J. M. Paredes1, M. Ribó1 and J. Martí2

1  Departament d'Astronomia i Meteorologia, Universitat de Barcelona, Av. Diagonal 647, 08028 Barcelona, Spain
2  Departamento de Física, Escuela Politécnica Superior, Universidad de Jaén, Virgen de la Cabeza 2, 23071 Jaén, Spain

(Received 21 May 2002 / Accepted 24 July 2002)

Abstract
Recent studies of relativistic jet sources in the Galaxy, also known as microquasars, have been very useful in trying to understand the accretion/ejection processes that take place near compact objects. However, the number of sources involved in such studies is still small. In an attempt to increase the number of known microquasars we have carried out a search for new Radio Emitting X-ray Binaries (REXBs). These sources are the ones to be observed later with VLBI techniques to unveil their possible microquasar nature. To this end, we have performed a cross-identification between the X-ray ROSAT all sky survey Bright Source Catalog (RBSC) and the radio NRAO VLA Sky Survey (NVSS) catalogs under very restrictive selection criteria for sources with $\vert b\vert<5\degr$. We have also conducted a deep observational radio and optical study for six of the selected candidates. At the end of this process two of the candidates appear to be promising, and deserve additional observations aimed to confirm their proposed microquasar nature.


Key words: X-rays: binaries -- radio continuum: stars

Offprint request: J. M. Paredes, josep@am.ub.es

SIMBAD Objects



© ESO 2002