VERITAS Detection of LS 5039 and HESS J1825-137

10 Jan 2020 · VERITAS Collaboration, Abeysekara A. U. 4 and 5, Benbow W. 4 and 5, Bird R. 4 and 5, Brose R. 4 and 5, Christiansen J. L. 8 and 9, Chromey A. J. 8 and 9, Cui W. 8 and 9, Daniel M. K. e, Falcone A. e, Fortson L. e, Hanna D. e, Hassan T. e, Hervet O. e, Holder J. e, Hughes G. e, Humensky T. B. e, Kaaret P. e, Kar P. e, Kelley-Hoskins N. e, Kertzman M. e, Kieda D. e, Krause M. e, Lang M. J. e, Maier G. e, Moriarty P. e, Nieto D. e, Nievas-Rosillo M. e, Ong R. A. 4 and 5, Pandel D. 4 and 5, Pohl M. 4 and 5, Prado R. R., Pueschel E., Quinn J., Ragan K., Reynolds P. T., Richards G. T., Roache E., Sadeh I., Santander M., Sembroski G. H., Weinstein A., Wilcox P., Williams D. A., Williamson T. J ·

With 8 hours of observations, VERITAS confirms the detection of two very high energy gamma-ray sources. The gamma-ray binary LS 5039 is detected with a statistical significance of $8.8\sigma$. The measured flux above 1 TeV is $(2.5 \pm 0.4) \times 10^{-12} \rm \, cm^{-2} \, s^{-1}$ near inferior conjunction and $(7.8 \pm 2.8) \times 10^{-13} \rm \, cm^{-2} \, s^{-1}$ near superior conjunction. The pulsar wind nebula HESS J1825-137 is detected with a statistical significance of $6.7\sigma$ and a measured flux above 1 TeV of $(3.9 \pm 0.8) \times 10^{-12} \rm \, cm^{-2} \, s^{-1}$.

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VERITAS Detection of LS 5039 and HESS J1825-137

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