Investigating the radiative properties of LHAASO J1908 + 0621

ABSTRACT LHAASO J1908+0621 has recently been detected as a source emitting ?-rays with energies above 100 TeV, and multiband observations show that break around 1 TeV appears in the ?-ray spectrum. We have reanalysed GeV properties of 100-TeV using 14 years data recorded by Fermi Large Area Telescope (Fermi-LAT). The spectrum energy range 30–500 an index 1.50 ± 0.26, which is much smaller than ?-rays. Additionally, radiation this are investigated based on one-zone time-dependent model. In model, associated pulsar wind nebula (PWN) powered PSR J1907 + 0602. High-energy particles composed electrons positrons injected into nebula. Multiband non-thermal emission produced via synchrotron inverse Compton scattering (ICS). Taking effect radiative losses adiabatic cooling account, spectral distribution from model broken power law for can explain fluxes bands. results support idea J1908 0621 originates PWN 0602, electrons/positrons ICS.