Strickman, M. S.Tavani, M.Coe, M. J.Steele, I. A.Fabregat, JaimeMartí, JavierParedes i Poy, Josep MariaRay, Paul S.2020-02-262020-02-2619980004-637Xhttps://hdl.handle.net/2445/151248We present the results of a multiwavelength monitoring campaign targeting the gamma-ray source 2CG 135+1 in an attempt to confirm the association of this object with the radio/Be/X-ray binary system LSI +61o 303. The campaign included simultaneous radio, optical, infrared, and hard x-ray/gamma-ray observations carried out with a variety of instruments, covering (not continously) almost three binary cycles of LSI +61o 303 during the period April-July 1994. Three separate OSSE observations of the gamma-ray source were carried out, covering different phases of the radio lightcurve. Hard X-ray/gamma-ray emission was detected from the direction of 2CG 135+1 during the first of these OSSE observations. The signal to noise ratio of the OSSE observations was insufficient to establish a spectral or intensity correlation of the high-energy emission with simultaneous radio, optical and infrared emission of LSI +61o 303. We briefly discuss the theoretical implications of our observations.12 p.application/pdfeng(c) American Astronomical Society, 1998Raigs gammaEstels binaris de raigs XGamma raysX-ray binariesinfo:eu-repo/semantics/article1527632020-02-26info:eu-repo/semantics/openAccess