J/A+A/545/L2 PSR J0537-6910 gamma-ray emission (HESS+, 2012)
Discovery of gamma-ray emission from the extragalactic pulsar wind nebula N157B
with H.E.S.S.
H.E.S.S. Collaboration, Abramowski A., Acero F., Aharonian F.,
Akhperjanian A.G., Anton G., Balzer A., Barnacka A., Becherini Y.,
Becker J., Bernlohr K., Birsin E., Biteau J., Bochow A., Boisson C.,
Bolmont J., Bordas P., Brucker J., Brun F., Brun P., Bulik T., Busching I.,
Carrigan S., Casanova S., P.M. Chadwick, Charbonnier A., Chaves R.C.G.,
Cheesebrough A., Cologna G., Conrad J., Cerruti M., Dalton M., Daniel M.K.,
Davids I.D., Degrange B., Deil C., Dickinson H.J., Djannati-Atai A.,
Domainko W., Drury L.O'C., Dubus G., Dutson K., Dyks J., Dyrda M.,
Egberts K., Eger P., Espigat P., Fallon L., Fegan S., Feinstein F.,
Fernandes M.V., Fiasson A., Fontaine G., Forster A., Fussling M., Gast H.,
Gerard L., Gerbig D., Giebels B., Glicenstein J.F., Gluck B., Goring D.,
Haffner S., Gallant Y.A., Hague J.D., Hahn J., Hampf D., Harris J.,
Hauser M., Heinz S., Heinzelmann G., Henri G., Hermann G., Hillert A.,
Hinton J.A., Hofmann W., Hofverberg P., Holler M., Horns D.,
Jacholkowska A., de Jager O.C., Jahn C., Jamrozy M., Jung I.,
Kastendieck M.A., Katarzynski K., Katz U., Kaufmann S., Keogh D.,
Klochkov D., Kluzniak W., Kneiske T., Komin Nu., Kosack K., Kossakowski R.,
Krayzel F., Khelifi B., Laffon H., Lamanna G., Lenain J.-P., Lennarz D.,
Lohse T., Lopatin A., Lu C.-C., Marandon V., Marcowith A., Masbou J.,
Maxted N., Mayer M., McComb T.J.L., Medina M.C., Mehault J., Moderski R.,
Mohamed M., Moulin E., Naumann C.L., Naumann-Godo M., de Naurois M.,
Nedbal D., Nekrassov D., Nguyen N., Nicholas B., Niemiec J., Nolan S.J.,
Ohm S., de Ona Wilhelmi E., Opitz B., Ostrowski M., Panter M.,
Paz Arribas M., Pekeur N.W., Pelletier G., Perez J., Petrucci P.-O.,
Peyaud B., Pita S., Oya I., Puhlhofer G., Punch M., Quirrenbach A., Raue M.,
Rayner S.M., Reimer A., Reimer O., Renaud M., de los Reyes R., Rieger F.,
Ripken J., Rob L., Rosier-Lees S., Rowell G., Rudak B., Rulten C.B.,
Sahakian V., Sanchez D.A., Santangelo A., Schlickeiser R., Schulz A.,
Schwanke U., Schwarzburg S., Schwemmer S., Sheidaei F., Skilton J.L.,
Sol H., Spengler G., Stawarz L., Steenkamp R., Stegmann C., Stinzing F.,
Stycz K., Sushch I., Szostek A., Tavernet J.-P., Terrier R.,
Tluczykont M., Valerius K., van Eldik C., Vasileiadis G., Venter C.,
Viana A., Vincent P., Volk H.J., Volpe F., Vorobiov S., Vorster M.,
Wagner S.J., Ward M., White R., Wierzcholska A., Zacharias M., Zajczyk A.,
Zdziarski A.A., Zech A., Zechlin H.-S.
<Astron. Astrophys. 545, L2 (2012)>
=2012A&A...545L...2H 2012A&A...545L...2H (SIMBAD/NED BibCode)
ADC_Keywords: Pulsars ; Gamma rays
Keywords: gamma rays: general - pulsars: individual: PSR J0537-6910 -
ISM: supernova remnants - Magellanic Clouds
Abstract:
We present the significant detection of the first extragalactic pulsar
wind nebula (PWN) detected in gamma rays, N157B, located in the large
Magellanic Cloud (LMC). Pulsars with high spin-down luminosity are
found to power energised nebulae that emit gamma rays up to energies
of several tens of TeV. N157B is associated with PSRJ0537-6910, which
is the pulsar with the highest known spin-down luminosity. The High
Energy Stereoscopic System telescope array observed this nebula on a
yearly basis from 2004 to 2009 with a dead-time corrected exposure of
46h. The gamma-ray spectrum between 600GeV and 12TeV is well-described
by a pure power-law with a photon index of 2.8±0.2stat±0.3syst and
a normalisation at 1TeV of
(8.2±0.8stat±2.5syst)x10-13/cm2/s/TeV. A leptonic
multi-wavelength model shows that an energy of about 4x1049erg is
stored in electrons and positrons. The apparent efficiency, which is
the ratio of the TeV gamma-ray luminosity to the pulsar's spin-down
luminosity, 0.08%±0.01%, is comparable to those of PWNe found in the
Milky Way. The detection of a PWN at such a large distance is possible
due to the pulsar's favourable spin-down luminosity and a bright
infrared photon-field serving as an inverse-Compton-scattering target
for accelerated leptons. By applying a calorimetric technique to these
observations, the pulsar's birth period is estimated to be shorter
than 10ms.
Description:
The table contains the energy spectrum of the TeV source HESS
J0537-691 (associated with N157B) in the range from 600GeV to 12TeV
from H.E.S.S. observations.
Objects:
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RA (2000) DE Designation(s)
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05 37 47.42 -69 10 19.9 PSR J0537-6910 = CXOU J053747.3-691020
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
spectrum.dat 33 13 Spectral points for N157B (HESS J0537-691)
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Byte-by-byte Description of file: spectrum.dat
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Bytes Format Units Label Explanations
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1- 6 F6.4 TeV E Mean energy
8- 15 E8.3 ph/TeV/m2/s Flux Differential photon flux
17- 24 E8.3 ph/TeV/m2/s e_Flux Minimum flux error
26- 33 E8.3 ph/TeV/m2/s E_Flux Maximum flux error
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Acknowledgements:
Nukri Komin, komin(at)lapp.in2p3.fr,
LAPP, CNRS/IN2P3, Annecy-le-Vieux
(End) Nukri Komin [LAPP], Patricia Vannier [CDS] 05-Sep-2012