Speaker
yingying Guo
Description
Gamma-ray halos around pulsars at very-high energies are an effective probe of particle propagation in the interstellar medium. Using the data collected by the half-array of the Large High Altitude Air Shower Observatory (LHAASO), we study the morphologies and spectra of the >25 TeV gamma-ray emission around Geminga and Monogem. The significance of Geminga (Monogem) above 25 TeV is ~10sigma (~7sigma) assuming a point source template with one-year’s exposure of the half array. Energy-dependent morphologies are investigated, which are very useful in constraining the energy-dependence of the diffusion coefficient. The energy spectra of Geminga and Monogem are also analyzed.
Keywords
Diffusion process; pulsar halo；Geminga; lhaaso
| Subcategory | Experimental Results |
|---|---|
| Collaboration | Lhaaso |
