VERITAS monitoring of LS I +61 303 in conjunction with X-ray, and GeV observation campaigns
Abstract
One of the most enigmatic TeV binary systems, LS I +61 303 exhibits a high degree of flux modulation from radio to TeV wavelengths over a single orbit of the binary system, once every 26.5 days. The binary system also exhibits a 4.5 year superorbital modulation in radio, X-ray and GeV emission which is yet to be seen in TeV gamma rays. LS I +61 303 has been observed by VERITAS in the TeV energy range and multiwavelength partners (optical - GeV). The contemporaneous multiwavelength data sets enable searches for correlations between X-ray and TeV emission, as well as GeV and TeV emission. These correlation studies can further elucidate the astrophysical properties of this binary system. We present the preliminary results from the analysis of recent VERITAS observations from the 2014-2015 season in conjunction with Swift-XRT (0.3-10 keV) and Fermi-LAT (0.3-300 GeV) observations.
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