Speaker
Bronislaw Rudak
(Nicolaus Copernicus Astronomical Center, Warsaw)
Description
The Vela pulsar (PSR J0835 − 4510) is the brightest persistent source in the high-energy γ-ray sky. It is a relatively near, young and energetic rotation-powered pulsar. Vela was a key target for the High Energy Stereoscopic System phase II array (H.E.S.S. II). Observations were carried out following a hint of pulsed emission above 20GeV seen using Fermi-LAT data. In this talk we present detailed results from the analysis of data only from the new 28m telescope in monoscopic mode. A high-significance pulsed emission is detected. The low-energy performance of the H.E.S.S. II instrument in monoscopic mode is clearly demonstrated given a distinct pulsed excess down to energies of 20GeV. The H.E.S.S. II data provide a thorough insight into the general phase profile of the Vela pulsar and reveal the specific pulse shape at these energies.
Primary authors
Arache Djannati Ataï
(APC, AstroParticule et Cosmologie, Université Paris Diderot, CNRS/IN2P3)
Bronislaw Rudak
(Nicolaus Copernicus Astronomical Center, Warsaw)
Christo Venter
(Centre for Space Research, North-West University)
Gianluca Giavitto
(DESY)
Markus Holler
(Laboratoire Leprince-Ringuet, Ecole Polytechnique, CNRS/IN2P3)
Mathieu Chrétien
(LPNHE, Université Pierre et Marie Curie Paris 6)
Michael Gajdus
(Institut für Physik, Humboldt-Universität zu Berlin)
Thomas Tavernier
(APC, AstroParticule et Cosmologie, Université Paris Diderot, CNRS/IN2P3)
