Speaker
Maxime Regeard
Description
Measuring pulsar spectra in the tens of GeV range is crucial for constraining high-energy emission models, but this effort is hindered by limited Fermi-LAT statistics and the sensitivity constraints of ground-based telescopes. In this study, we analyze data from the largest H.E.S.S. telescope (CT-5) and Fermi-LAT to measure the spectra of the Vela pulsar and PSR B1706-44 in the 1–100 GeV range. Through a joint spectral fit above 10 GeV, which accounts for both instruments' response functions, we detect significant spectral curvature in both sources. This curvature rules out the onset of a power-law tail, setting them apart from the Crab pulsar, and sheds new light on the emission mechanisms in pulsars.
