First ground-based measurement of sub-20 GeV to 100 GeV γ-Rays from the Vela pulsar with H.E.S.S. II

  title={First ground-based measurement of sub-20 GeV to 100 GeV $\gamma$-Rays from the Vela pulsar with H.E.S.S. II},
  author={H.E.S.S. Collaboration and Hassan Abdalla and Felix Aharonian and Faical Ait Benkhali and E. O. Anguner and Masanori Arakawa and C. Arcaro and C. Arm and Maialen Arrieta and Michael Backes and Monica Barnard and Y Becherini and Julia K. Becker Tjus and David Berge and Sabrina Bernhard and Konrad Bernlohr and Rebecca Blackwell and Markus Bottcher and Catherine Boisson and Julien Bolmont and S. Bonnefoy and P. Bordas and Johan Bregeon and François Brun and P. Brun and Mark Bryan and M. Buchele and Tomasz Bulik and T. Bylund and Massimo Capasso and Sami Caroff and Alessandro Carosi and Sabrina Casanova and M. Cerruti and Nachiketa Chakraborty and S. Ch and Ryan C. G. Chaves and A. W. Chen and Sergio Colafrancesco and Benjamin Condon and I. D. Davids and Christoph Deil and J. Devin and P. deWilt and Ludmilla Dirson and Arache Djannati-Atai and A Dmytriiev and Axel Donath and Victor Doroshenko and Luke O'c. Drury and Jarosław Dyks and Kathrin Egberts and Gabriel Emery and J-P. Ernenwein and Stefanie Eschbach and Stephen J. Fegan and A. Fiasson and Gilles Fontaine and S. Funk and Matthias Fussling and Stefano Gabici and Yves A. Gallant and Florian Gat'e and G. Giavitto and D. Glawion and J. F. Glicenstein and Daniel Gottschall and M.-H. Grondin and Joachim Hahn and Maria Haupt and G{\"o}tz Heinzelmann and Gilles Henri and German Hermann and J. A. Hinton and W. Hofmann and C. Hoischen and Tim Lukas Holch and Markus Holler and Dieter Horns and David Huber and Hideo Iwasaki and A. Jacholkowska and Marek Jamrozy and D. Jankowsky and Felix Jankowsky and L. Jouvin and Ira Jung-Richardt and Max Anton Kastendieck and K. Katarzy'nski and Miho Katsuragawa and Uli Katz and Daniel Kerszberg and Dmitry Khangulyan and Bruno Kh'elifi and Johannes King and S. Klepser and Wlodek Klu'zniak and Nu. Komin and K. Kosack and S. Krakau and Maximilian Kraus and Petrus Paulus Kruger and Giovanni Lamanna and J. C. Lau and Julien Lefaucheur and Anne Lemi{\`e}re and Marianne Lemoine-Goumard and J.-P. Lenain and E. Leser and Thomas Lohse and Matthias Lorentz and Rub'en L'opez-Coto and Iryna Lypova and Dmitry Malyshev and Viana Mar and Alexandre Marcowith and Carolina Mariaud and G. Guillem Mart'i-Devesa and Ramin Marx and Gilles Maurin and Petrus J. Meintjes and Alison Mitchell and Rafal Moderski and Mahmoud Mohamed and Lars Mohrmann and Emmanuel Moulin and T. Murach and Shinya Nakashima and Mathieu de Naurois and H. Ndiyavala and Felix Niederwanger and Jacek Niemiec and Louise Beth Oakes and P. T. O’Brien and Hirokazu Odaka and S. Ohm and Michał Ostrowski and I. Oya and Marco Padovani and Mike Panter and R. D. Parsons and C. Perennes and P. Petrucci and Bernard Peyaud and Q. Piel and Santiago Pita and V. Poireau and A Priyana Noel and Dmitry Prokhorov and Heike Prokoph and Gerd Puhlhofer and M. Punch and Andreas Quirrenbach and S. Raab and R. Rauth and Anita Reimer and O. Reimer and Matthieu Renaud and Frank M. Rieger and Lucia Rinchiuso and Carlo Romoli and Gavin Rowell and B. Rudak and E. Ruiz-Velasco and Vardan Sahakian and Shinya Saito and D. A. Sanchez and A. Santangelo and Manami Sasaki and Reinhard Schlickeiser and Fabian Schussler and Alex Schulz and U. Schwanke and Stefanie Schwemmer and M. Seglar-Arroyo and M. Senniappan and Albertus S. Seyffert and Nebiha Shafi and Idan Shilon and Kleopas Shiningayamwe and Rachel Simoni and Atreyee Sinha and H'elene Sol and Felix Spanier and Andreas Specovius and Marion Spir-Jacob and L. Stawarz and Riaan Steenkamp and Christian M. Stegmann and Constantin Steppa and T. Takahashi and J-P. Tavernet and Thomas Tavernier and A. M. Taylor and R. Terrier and Luigi Tibaldo and Domenico Tiziani and Martin Tluczykont and Cyril Trichard and Michelle Tsirou and Naomi Tsuji and Richard. J. Tuffs and Yasunobu Uchiyama and DJ van der Walt and Christopher van Eldik and Carlo van Rensburg and Brian van Soelen and Georges Vasileiadis and J. Veh and Christo Venter and Pascal Vincent and Jacco Vink and Fabien Voisin and Heinrich J. Volk and Thomas Vuillaume and Zorawar Wadiasingh and S. J. Wagner and Robert M. Wagner and R. M. White and Alicja Wierzcholska and R. Yang and D. N. Zaborov and Michael Zacharias and Roberta Zanin and Andrzej A. Zdziarski and Andreas Zech and Floriana Zefi and Alexander Ziegler and J. Zorn and Natalia Żywucka and Matthew Kerr and Simon Johnston and Ryan M. Shannon},
  journal={Astronomy \& Astrophysics},
Aims. We report on the measurement and investigation of pulsed high-energy γ-ray emission from the Vela pulsar, PSR B0833−45, based on observations with the largest telescope of H.E.S.S., CT5, in monoscopic mode, and on data obtained with the Fermi-LAT. Methods. Data from 40.3 h of observations carried out with the H.E.S.S. II array from 2013 to 2015 have been used. A dedicated very low-threshold event reconstruction and analysis pipeline was developed to achieve the lowest possible energy… 

Rotationally driven VHE emission from the Vela pulsar

Context. The recent detection of pulsed γ-ray emission from the Vela pulsar in the ∼10 to 100 GeV range by H.E.S.S. promises important potential to probe into the very high energy (VHE) radiation

Inferring the origins of the pulsed γ-ray emission from the Crab pulsar with ten-year Fermi-LAT data

  • P. Yeung
  • Physics
    Astronomy & Astrophysics
  • 2020
Context. The Crab pulsar is a bright γ-ray source, which has been detected at photon energies up to ∼1 TeV. Its phase-averaged and phase-resolved γ-ray spectra below 10 GeV exhibit exponential

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A Search for Pulsed Very High-energy Gamma-Rays from 13 Young Pulsars in Archival VERITAS Data

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Detection of the Geminga pulsar with MAGIC hints at a power-law tail emission beyond 15 GeV

We report the detection of pulsed gamma-ray emission from the Geminga pulsar (PSR J0633+1746) between 15 GeV and 75 GeV. This is the first time a middle-aged pulsar has been detected up to these

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Context. PSR B1259–63/LS 2883 is a gamma-ray binary system consisting of a pulsar in an eccentric orbit around a bright Oe stellar-type companion star that features a dense circumstellar disc. The

High-energy Studies of the 3HWC J1954+286 Region: Likely Gamma-Ray Detection of the Supernova Remnant G65.1+0.6

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H.E.S.S. and Suzaku observations of the Vela X pulsar wind nebula

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Pulsar high-energy emission models

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  • Physics
    Proceedings of High Energy Astrophysics in Southern Africa 2021 — PoS(HEASA2021)
  • 2021
Ground-based Air-Cherenkov telescopes have detected pulsations at energies above 50 GeV from a growing number of Fermi pulsars. These include the Crab, Vela, PSR B1706-44 and Geminga, with the first



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The Geminga pulsar, one of the brighest gamma-ray sources, is a promising candidate for emission of very-high-energy (VHE > 100 GeV) pulsed gamma rays. Also, detection of a large nebula have been


Due to the low gamma-ray fluxes from pulsars above 50 GeV and the small collecting area of space-based telescopes, the gamma-ray emission discovered by the Fermi Large Area Telescope (LAT) in ∼150


The Crab pulsar is a quite young, famous pulsar that radiates multi-wavelength pulsed photons. The latest detection of GeV and TeV pulsed emission with an unprecedented signal-to-noise ratio,