摘要
HESS J1303-631 is an extended TeV pulsar wind nebula powered by the pulsar PSR J1301-6305 detected with the High Energy Stereoscopic System. We present an analysis of the GeV γ-ray region of HESS J1303-631 with about14 yr of Fermi Large Area Telescope data. The GeV γ-ray emission, coincident with the very-high-energy source,has a photon index of 1.69 ± 0.09 in 10–500 GeV band, and the GeV morphology has an extension to the same direction as indicated in the TeV band. Moreover, the observed multi-wavelength spectral energy distribution of the nebula is studied with a one-zone time-dependent leptonic model, in which the electrons/positrons injected into the nebula are assumed to have a broken power-law spectrum. The result indicates that the multi-wavelength nonthermal emission can be well reproduced via synchrotron radiation and inverse Compton scattering of the particles.
基金
supported by the National Natural Science Foundation of China (NSFC, grant Nos. U2031107 and12063004)
a grant from Yunnan Province (YNWR-QNBJ-2018-049)
Yunnan Fundamental Research Projects (grant No.202201BF070001-020)
the Program of Yunnan University (KC-22221102)。
