Issue |
A&A
Volume 484, Number 2, June III 2008
|
|
---|---|---|
Page(s) | 435 - 440 | |
Section | Stellar structure and evolution | |
DOI | https://doi.org/10.1051/0004-6361:20078715 | |
Published online | 04 March 2008 |
Discovery of very-high-energy γ-ray emission from the vicinity of PSR J1913+1011 with HESS
1
Max-Planck-Institut für Kernphysik, Heidelberg, Germany e-mail: stefan.hoppe@mpi-hd.mpg.de
2
Dublin Institute for Advanced Studies, Ireland
3
Yerevan Physics Institute, Armenia
4
University of Durham, Department of Physics, UK
5
Centre d'Étude Spatiale des Rayonnements, CNRS/UPS, Toulouse, France
6
Landessternwarte, Universität Heidelberg, Königstuhl, Germany
7
Universität Hamburg, Institut für Experimentalphysik, Germany
8
Institut für Physik, Humboldt-Universität zu Berlin, Germany
9
LUTH, Observatoire de Paris, CNRS, Université Paris VII, Meudon, France
10
DAPNIA/DSM/CEA, CE Saclay, Gif-sur-Yvette, France
11
Nicolaus Copernicus Astronomical Center, Warsaw, Poland
12
Unit for Space Physics, North-West University, Potchefstroom, South Africa
13
Laboratoire d'Astrophysique de Grenoble, INSU/CNRS, Université Joseph Fourier, Grenoble, France
14
Laboratoire Leprince-Ringuet, Ecole Polytechnique, CNRS/IN2P3, Palaiseau, France
15
Laboratoire d'Annecy-le-Vieux de Physique des Particules, CNRS/IN2P3, Annecy-le-Vieux, France
16
European Associated Laboratory for Gamma-Ray Astronomy, jointly supported by CNRS and MPG
17
Astroparticule et Cosmologie (APC), CNRS, Université Paris VII, Paris; (UMR 7164 (CNRS, Université Paris VII, CEA, Observatoire de Paris), France)
18
Laboratoire de Physique Théorique et Astroparticules, CNRS/IN2P3, Université Montpellier II, Montpellier, France
19
Universität Erlangen-Nürnberg, Physikalisches Institut, Germany
20
School of Physics & Astronomy, University of Leeds, UK
21
Institut für Astronomie und Astrophysik, Universität Tübingen, Germany
22
Toruń Centre for Astronomy, Nicolaus Copernicus University, Toruń, Poland
23
LPNHE, Universités Paris VI & VII, CNRS/IN2P3, Paris, France
24
Institute of Particle and Nuclear Physics, Charles University, V Holesovickach 2, 180 00 Prague 8, Czech Republic
25
Obserwatorium Astronomiczne, Uniwersytet Jagielloński, Kraków, Poland
26
School of Chemistry & Physics, University of Adelaide, Australia
27
Institut für Theoretische Physik, Lehrstuhl IV, Ruhr-Universität Bochum, Germany
28
University of Namibia, Windhoek, Namibia
Received:
21
September
2007
Accepted:
20
February
2008
The HESS experiment, an array of four Imaging Atmospheric Cherenkov Telescopes with high sensitivity and large field-of-view, has been used to search for emitters of very-high-energy (VHE, >100 GeV) γ-rays along the Galactic plane, covering the region 30° 60°, 280° 330°, and -3° 3°. In this continuation of the HESS Galactic Plane Scan, a new extended VHE γ-ray source was discovered at =19h12m49s, =+10°09´06´´(HESS J1912+101). Its integral flux between 1–10 TeV is ~10% of the Crab Nebula flux in the same energy range. The measured energy spectrum can be described by a power law d with a photon index . HESS J1912+101 is plausibly associated with the high spin-down luminosity pulsar PSR J1913+1011. We also discuss associations with an as yet unconfirmed SNR candidate proposed from low frequency radio observation and/or with molecular clouds found in 13CO data.
Key words: ISM: supernova remnants / gamma rays: observations
© ESO, 2008
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