Abstract
The water Cherenkov detector array (WCDA), sub-array of Large High Altitude Air Shower Observatory (LHAASO), is highly sensitive to VHE gamma-ray and is dedicated to surveying the northern sky (100GeV to 30TeV). In this work, the TeV gamma ray emission in Mrk421 is monitored over period from 2019 July to 2020 February with the first detector array of WCDA. The significance and excess over background of this source are measured within this period and compared with the observation by the satellite-borne experiment Fermi in the GeV range. The evolution of the spectral energy distribution is also investigated by measuring spectral indices at two different flux levels.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
