July 29, 2015 to August 6, 2015
World Forum
Europe/Amsterdam timezone

Pulsations from the Vela pulsar down to 30 GeV with H.E.S.S. II

Aug 4, 2015, 3:15 PM
15m
Amazon (World Forum)

Amazon

World Forum

Churchillplein 10 2517 JW Den Haag The Netherlands
Oral contribution GA-EX Parallel GA16 H.E.S.S.

Speaker

Michael Gajdus (Humboldt Universität zu Berlin)

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 20 GeV seen using Fermi-LAT data. In this talk we present detailed results from the analysis of data only from the new 28 m telescope in monoscopic mode on the Vela pulsar. 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 30 GeV. 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.
Collaboration H.E.S.S.
Registration number following "ICRC2015-I/" 847

Primary author

Michael Gajdus (Humboldt Universität zu Berlin)

Co-authors

Arache Djannati-Atai (Laboratoire de Physique Corpusculaire) Bronek Rudak (N. Copernicus Astronomical Center) Christo Venter (North-West University Potchefstroom Campus) Gianluca Giavitto (DESY Zeuthen) Markus Holler (LLR - Ecole Polytechnique) Mathieu Chrétien (LPNHE CNRS/IN2P3) Thomas Tavernier (Laboratoire APC)

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