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Analysis of High-mass Microquasar LS5039 using the newest HAWC data

ORAL

Abstract

The High-mass microquasar LS 5039 is a bright gamma-ray source located less than 1.5 degrees from the galactic plane. Previously the High Energy Stereoscopic System (H.E.S.S.) discovered the source with 3.9 days orbital periodicity in a very high energy gamma-ray region. However, the behavior of gamma rays beyond tens of TeV remains unclear. The High Altitude Water Cherenkov (HAWC) gamma-ray observatory has great sensitivity beyond 10 TeV, making HAWC a perfect instrument to study this source at the highest energy range. This work performs multi-source analysis using the HAWC gamma-ray sky map for which the gamma-ray energies were reconstructed with an artificial neural network. With the improved point spread function (PSF), we can disentangle microquasar LS 5039 from the complex eHWC J1825-134 region. I will present the energy spectrum of LS 5039 for energy greater than 10 TeV.

Presenters

  • Dezhi Huang

    Michigan Technological University

Authors

  • Dezhi Huang

    Michigan Technological University

  • Chang Dong Rho

    University of Seoul