Possible GeV gamma-ray emission from the pulsar wind nebula in CTA 1

• DOI: 10.48550/arxiv.2403.06109
• Publication Date: 2024-03-10
• Authors: Liancheng Zhou; Keyao Wu; Yunlu Gong; Jun Fang
• Keywords: Pulsar wind nebula

We report a detection of GeV $\gamma$-ray emission potentially originating from the pulsar wind nebula in CTA 1 by analyzing about 15 yr Fermi Large Area Telescope data. By selecting an energy range 50 to TeV remove contamination PSR J0007+7303, we have discovered extended source with TS value $\sim$ 44.94 region 1. The obtained flux is measured be 6.71 $\pm$ 2.60 $\times$ $10^{-12}$ erg $\mathrm{cm}^{-2}$ $\mathrm{s}^{-1}$ spectral index 1.61 0.36, which allows for smooth connection band. also considered associated 1LHAASO J0007+7303u, Ultra-High-Energy listed recently published catalog High Altitude Air Shower Observatory. assume that radiation originates and its multi-wavelength distribution can explained well time-dependent one-zone model.