1997/11/24 by M. S. Strickman, M. Tavani, M. J. Coe +7 · 36 citations
Mathematics · Physics and Astronomy · #Astronomy #Astrophysical Phenomena and Observations #Astrophysics #Astrophysics and Cosmic Phenomena #Binary number #Computer science #Energy (signal processing) #Environmental science #Gamma-ray bursts and supernovae #Geology #Infrared #Light curve #Mathematics #Noise (video) #Physics #Remote sensing #astro-ph
paper · pdf · doi:10.1086/305446
published in The Astrophysical Journal 497(1), 419-430 (IOP Publishing) · 17 pages, 9 figures, 6 tables to be published in Astrophysical Journal, 10 April 1998
arxiv created 1997/11/24 · openalex publication_date 1998/04/10 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We present the results of a multiwavelength monitoring campaign targeting the γ-ray source 2CG 135+1 in an attempt to confirm the association of this object with the radio/Be/X-ray binary system LSI +61°303. The campaign included simultaneous radio, optical, infrared, and hard X-ray/γ-ray observations carried out with a variety of instruments, covering (not continuously) almost three binary cycles of LSI +61°303 during the period 1994 April-July. Three separate OSSE observations of the γ-ray source were carried out, covering different phases of the radio light curve. Hard X-ray/γ-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 +61°303. We briefly discuss the theoretical implications of our observations.