Mc. Maccarone et al., BEPPOSAX AND ASCA OBSERVATIONS OF THE FIELD CONTAINING THE GAMMA-RAY TRANSIENT GRO J1838-04, Nuclear physics. B, Proceedings supplement, 69(1-3), 1999, pp. 379-382
We present preliminary results of BeppoSAX and ASCA observations of th
e Galactic field containing the unidentified gamma-ray transient GRO J
1838-04. Several weak X-ray sources are detected within the EGRET erro
r box. No obvious counterpart of GRO J1838-04 is evident from these ob
servations. More multiwavelength observations are necessary to identif
y the nature of this non-blazar gamma-ray transient.