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@ARTICLE{Collaboration:293217,
author = {Abramowski, A. and Aharonian, F. and Ait Benkhali, F. and
Akhperjanian, A. G. and Angüner, E. O. and Backes, M. and
Balenderan, S. and Balzer, A. and Barnacka, A. and
Becherini, Y. and Becker Tjus, J. and Berge, D. and
Bernhard, S. and Bernlöhr, K. and Birsin, E. and Biteau, J.
and Böttcher, M. and Boisson, C. and Bolmont, J. and
Bordas, P. and Bregeon, J. and Brun, F. and Brun, P. and
Bryan, M. and Bulik, T. and Carrigan, S. and Casanova, S.
and Chadwick, P. M. and Chakraborty, N. and Chalme-Calvet,
R. and Chaves, R. C. G. and Chrétien, M. and Colafrancesco,
S. and Cologna, G. and Conrad, J. and Couturier, C. and Cui,
Y. and Davids, I. D. and Degrange, B. and Deil, C. and
deWilt, P. and Djannati-Ataï, A. and Domainko, W. and
Donath, A. and Drury, L. O’C. and Dubus, G. and Dutson, K.
and Dyks, J. and Dyrda, M. and Edwards, T. and Egberts, K.
and Eger, P. and Espigat, P. and Farnier, C. and Fegan, S.
and Feinstein, F. and Fernandes, M. V. and Fernandez, D. and
Fiasson, A. and Fontaine, G. and Förster, A. and Füßling,
M. and Gabici, S. and Gajdus, M. and Gallant, Y. A. and
Garrigoux, T. and Giavitto, G. and Giebels, B. and
Glicenstein, J. F. and Gottschall, D. and Grondin, M.-H. and
Grudzińska, M. and Hadasch, D. and Häffner, S. and Hahn,
J. and Harris, J. and Heinzelmann, G. and Henri, G. and
Hermann, G. and Hervet, O. and Hillert, A. and Hinton, J. A.
and Hofmann, W. and Hofverberg, P. and Holler, M. and Horns,
D. and Ivascenko, A. and Jacholkowska, A. and Jahn, C. and
Jamrozy, M. and Janiak, M. and Jankowsky, F. and
Jung-Richardt, I. and Kastendieck, M. A. and Katarzyński,
K. and Katz, U. and Kaufmann, S. and Khélifi, B. and
Kieffer, M. and Klepser, S. and Klochkov, D. and Kluźniak,
W. and Kolitzus, D. and Komin, Nu. and Kosack, K. and
Krakau, S. and Krayzel, F. and Krüger, P. P. and Laffon, H.
and Lamanna, G. and Lefaucheur, J. and Lefranc, V. and
Lemière, A. and Lemoine-Goumard, M. and Lenain, J.-P. and
Lohse, T. and Lopatin, A. and Lu, C.-C. and Marandon, V. and
Marcowith, A. and Marx, R. and Maurin, G. and Maxted, N. and
Mayer, M. and McComb, T. J. L. and Méhault, J. and
Meintjes, P. J. and Menzler, U. and Meyer, M. and Mitchell,
A. M. W. and Moderski, R. and Mohamed, M. and Morå, K. and
Moulin, E. and Murach, T. and de Naurois, M. and Niemiec, J.
and Nolan, S. J. and Oakes, L. and Odaka, H. and Ohm, S. and
Opitz, B. and Ostrowski, M. and Oya, I. and Panter, M. and
Parsons, R. D. and Paz Arribas, M. and Pekeur, N. W. and
Pelletier, G. and Petrucci, P.-O. and Peyaud, B. and Pita,
S. and Poon, H. and Pühlhofer, G. and Punch, M. and
Quirrenbach, A. and Raab, S. and Reichardt, I. and Reimer,
A. and Reimer, O. and Renaud, M. and de los Reyes, R. and
Rieger, F. and Romoli, C. and Rosier-Lees, S. and Rowell, G.
and Rudak, B. and Rulten, C. B. and Sahakian, V. and Salek,
D. and Sanchez, D. A. and Santangelo, A. and Schlickeiser,
R. and Schüssler, F. and Schulz, A. and Schwanke, U. and
Schwarzburg, S. and Schwemmer, S. and Sol, H. and Spanier,
F. and Spengler, G. and Spies, F. and Stawarz, Ł. and
Steenkamp, R. and Stegmann, C. and Stinzing, F. and Stycz,
K. and Sushch, I. and Tavernet, J.-P. and Tavernier, T. and
Taylor, A. M. and Terrier, R. and Tluczykont, M. and
Trichard, C. and Valerius, K. and van Eldik, C. and van
Soelen, B. and Vasileiadis, G. and Veh, J. and Venter, C.
and Viana, A. and Vincent, P. and Vink, J. and Völk, H. J.
and Volpe, F. and Vorster, M. and Vuillaume, T. and Wagner,
S. J. and Wagner, P. and Wagner, R. M. and Ward, M. and
Weidinger, M. and Weitzel, Q. and White, R. and
Wierzcholska, A. and Willmann, P. and Wörnlein, A. and
Wouters, D. and Yang, R. and Zabalza, V. and Zaborov, D. and
Zacharias, M. and Zdziarski, A. A. and Zech, A. and Zechlin,
H.-S.},
collaboration = {H.E.S.S.{ Collaboration} and H.E.S.S.{ Collaboration}},
title = {{H}.{E}.{S}.{S}. reveals a lack of {T}e{V} emission from
the supernova remnant {P}uppis {A}},
journal = {Astronomy and astrophysics},
volume = {575},
issn = {1432-0746},
address = {Les Ulis},
publisher = {EDP Sciences},
reportid = {PUBDB-2016-00373},
pages = {A81 -},
year = {2015},
note = {(c) ESO},
abstract = {Context. Puppis A is an interesting $\sim$4 kyr-old
supernova remnant (SNR) that shows strong evidence of
interaction between the forward shock and a molecular cloud.
It has been studied in detail from radio frequencies to
high-energy (HE, 0.1−100 GeV) $\gamma$-rays. An analysis
of the Fermi-LAT data has shown extended HE $\gamma$-ray
emission with a 0.2−100 GeV spectrum exhibiting no
significant deviation from a power law, unlike most of the
GeV-emitting SNRs known to be interacting with molecular
clouds. This makes it a promising target for imaging
atmospheric Cherenkov telescopes (IACTs) to probe the
$\gamma$-ray emission above 100 GeV.Aims. Very-high-energy
(VHE, E $\ge$ 0.1 TeV) $\gamma$-ray emission from Puppis A
has been, for the first time, searched for with the High
Energy Stereoscopic System (H.E.S.S.).Methods. Stereoscopic
imaging of Cherenkov radiation from extensive air showers is
used to reconstruct the direction and energy of the incident
$\gamma$-rays in order to produce sky images and source
spectra. The profile likelihood method is applied to find
constraints on the existence of a potential break or cutoff
in the photon spectrum.Results. The analysis of the H.E.S.S.
data does not reveal any significant emission towards Puppis
A. The derived upper limits on the differential photon flux
imply that its broadband $\gamma$-ray spectrum must exhibit
a spectral break or cutoff. By combining Fermi-LAT and
H.E.S.S. measurements, the 99\% confidence-level upper
limits on such a cutoff are found to be 450 and 280 GeV,
assuming a power law with a simple exponential and a
sub-exponential cutoff, respectively. It is concluded that
none of the standard limitations (age, size, radiative
losses) on the particle acceleration mechanism, assumed to
be continuing at present, can explain the lack of VHE
signal. The scenario in which particle acceleration has
ceased some time ago is considered as an alternative
explanation. The HE/VHE spectrum of Puppis A could then
exhibit a break of non-radiative origin (as observed in
several other interacting SNRs, albeit at somewhat higher
energies), owing to the interaction with dense and neutral
material, in particular towards the NE region.},
cin = {ZEU-HESS},
ddc = {520},
cid = {I:(DE-H253)ZEU-HESS-20140213},
pnm = {613 - Matter and Radiation from the Universe (POF3-613) /
P-WIND - New light on the gamma-ray sky: unveiling
cosmic-ray accelerators in the Milky Way and their relation
to pulsar wind nebulae (259391)},
pid = {G:(DE-HGF)POF3-613 / G:(EU-Grant)259391},
experiment = {EXP:(DE-MLZ)External-20140101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000350249100081},
doi = {10.1051/0004-6361/201424805},
url = {https://bib-pubdb1.desy.de/record/293217},
}
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