A search for microquasar candidates at low galactic latitudes

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 |b|<5 degrees. 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.

11 pages, 4 figures. Published in A&A, see http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=2002A%26A...394..193P

References in corpus (13)

• Sources of Relativistic Jets in the Galaxy
• Powerful jets from black hole X-ray binaries in Low/Hard X-ray states
• A relativistic jet from Cygnus X-1 in the low/hard X-ray state
• Discovery of a High-Energy Gamma-Ray-Emitting Persistent Microquasar
• The Deep X-ray Radio Blazar Survey (DXRBS). I. Methods and First Results
• Sco X-1: The Evolution and Nature of the Twin Compact Radio Lobes
• The radio luminosity of persistent X-ray binaries
• Radio-loud active galaxies in the northern ROSAT All-Sky Survey. I. Radio identifications
• LS 5039: a runaway microquasar ejected from the galactic plane
• Identification of selected sources from the ROSAT Galactic Plane Survey - I
• One-sided jet at milliarcsecond scales in LSI+61303
• XTE J1550-564: A superluminal ejection during the September 1998 outburst
• Empirical Uncertainty Estimators for Astrometry from Digital Databases

Cited by in corpus (14)

• Opening angles, Lorentz factors and confinement of X-ray binary jets
• Swift/XRT observations of unidentified INTEGRAL/IBIS sources
• The dust-enshrouded microquasar candidate AX J1639.0-4642 = IGR J16393-4643
• Using the Rosat Catalogue to find Counterparts for Unidentified Objects in the 1st Fermi/LAT Catalogue
• Identification of New Gamma-Ray Blazar Candidates With Multifrequency Archival Observations
• Optical spectroscopy of microquasar candidates at low galactic latitudes
• A Search for Very Active Stars in the Galaxy
• The jet and arc molecular clouds toward Westerlund 2, RCW 49, and HESS J1023-575; 12CO and 13CO (J=2-1 and J=1-0) observations with NANTEN2 and Mopra Telescope
• EVN and MERLIN observations of microquasar candidates at low galactic latitudes
• The populations of hard X- and γ-ray sources: a correlation study and new possible identifications
• A new search strategy for microquasar candidates using NVSS/2MASS and XMM-Newton data
• Sub-arcsecond radio and optical observations of the likely counterpart to the gamma-ray source 2FGL J2056.7+4939
• On the binary nature of 1RXS J162848.1-415241
• HAWC Search for High-Mass Microquasars