Oral Presentation

High-Energy and Very-High-Energy Emissions from Pulsar Magnetosphere

Author(s): Kouchi Hirotani (ASIAA)

Presenter: Kouichi Hirotani (ASIAA)

In the high-energy (HE) and very-high-energy (VHE) regimes, the Fermi, VERITAS and MAGIC experiments have detected pulsed signals from the Crab pulsar up to 400 GeV. The light curves and the spectra obtained from the Crab and other rotation-powered pulsars, suggest that the gamma-ray pulsars have high-altitude emission zones, which avoid super-exponential cutoff due to magnetic pair production and reproduce wide-separated double-peak light curves. I thus examine the outer-magnetospheric emission model and demonstrate that their gamma-ray luminosity is naturally proportional to the square root of the spin-down luminosity, which has been a long-standing issue in HE astrophysics. Physical interpretations of VHE pulsations detected from the Crab pulsar, will be also presented.