A&A Supplement series, Vol. 128, March II 1998, 423-428
Received July 2; accepted August 4, 1997
-ray
source 2EG J1834-2138 J.A. Combi 
and G.E. Romero 
Send offprint request: J.A. Combi, first address
Instituto Argentino de Radioastronomıa, C.C.5,
(1894) Villa Elisa, Bs. As., Argentina
Theoretical Physics Lab.,
Department of Physics, University of La Plata, C.C. 67, 1900 La Plata,
Argentina
Instituto Astronômico e Geofısico, Universidade de São
Paulo, Av. M. Stefano 4200, CEP 043010-904 São Paulo SP, Brazil
We present results of a study of the radio emission field around the
best estimate position of the low-latitude EGRET source 2EG 
. The identification of this -ray source with the
gravitational lensed AGN PKS 1830-211 has been recently proposed by
Mattox et al. (1997). Additional support for this
identification is provided here. Contamination produced by the diffuse disk
emission has been removed from new radio images of the surrounding region
of 2EG allowing a determination of the fine radio
structure. Several previously unnoticed supernova remnants have been found
within a few degrees from the -ray source. However, the only strong
radio source within the 95% source location confidence contour of 2EG is PKS 1830-211. In addition, both spectrum and variability
analysis of the EGRET data support the identification of both sources.
keywords: gamma rays: observations -- radio continuum: galaxies -- galaxies: active -- galaxies: quasars: PKS 1830-211
-ray emission