Search for pulsed VHE gamma-ray emission from young pulsars with HESS

被引：21

作者：

Aharonian, F.

Akhperjanian, A. G.

Bazer-Bachi, A. R.

Beilicke, M.

Benbow, W.

Berge, D.

Bernloehr, K.

Boisson, C.

Bolz, O.

Borrel, V.

Braun, I.

Brion, E.

Brown, A. M.

Buehler, R.

Busching, I.

Boutelier, T.

Carrigan, S.

Chadwick, P. M.

Chounet, L.-M.

Coignet, G.

Cornils, R.

Costamante, L.

Degrange, B.

Dickinson, H. J.

Djannati-Atai, A.

Drury, L. O'C.

Dubus, G.

Egberts, K.

Eifert, T.

Emmanoulopoulos, D.

Espigat, P.

Farnier, C.

Feinstein, F.

Ferrero, E.

Fiasson, A.

Fontaine, G.

Funk, Seb.

Funk, S.

Fuessling, M.

Gallant, Y. A.

Giebels, B.

Glicenstein, J. F.

Glueck, B.

Goret, P.

Hadjichristidis, C.

Hauser, D.

Hauser, M.

Heinzelmann, G.

Henri, G.

Hermann, G.

机构：

[1] Max Planck Inst Kernphys, D-69029 Heidelberg, Germany

[2] Yerevan Phys Inst, Yerevan 375036, Armenia

[3] Ctr Etud Spatiale Rayonnements, CNRS, UPS, F-31029 Toulouse 4, France

[4] Univ Hamburg, Inst Expt Phys, D-22761 Hamburg, Germany

[5] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany

[6] CNRS, LUTH, UMR 8102, Observ Paris,Sect Meudon, F-92195 Meudon, France

[7] CE Saclay, DAPNIA, DSM, F-91191 Gif Sur Yvette, France

[8] Univ Durham, Dept Phys, Durham DH1 3LE, England

[9] NW Univ Potchefstroom, Unit Space Phys, ZA-2520 Potchefstroom, South Africa

[10] Ecole Polytech, Lab Leprince Ringuet, IN2P3, CNRS, F-91128 Palaiseau, France

[11] Lab Annecy Le Vieux Phys Particules, IN2P3, CNRS, F-74941 Annecy Le Vieux, France

[12] APC, UMR 7164, F-75231 Paris 05, France

[13] Univ Paris 07, CNRS, CEA, Observ Paris, Paris, France

[14] Dublin Inst Adv Studies, Dublin 4, Ireland

[15] Heidelberg Univ, D-69117 Heidelberg, Germany

[16] Univ Montpellier 2, Lab Phys Theor & Astroparticules, IN2P3, CNRS, F-34095 Montpellier 5, France

[17] Univ Erlangen Nurnberg, Inst Phys, D-91058 Erlangen, Germany

[18] Univ Grenoble 1, Astrophys Lab, INSU, CNRS, F-38041 Grenoble 9, France

[19] Univ Tubingen, Inst Astron & Astrophys, D-72076 Tubingen, Germany

[20] Univ Paris 06, Lab Phys Nucl & Hautes Energies, IN2P3, CNRS, F-75252 Paris 5, France

[21] Univ Paris 07, Lab Phys Nucl & Hautes Energies, IN2P3, CNRS, F-75252 Paris 5, France

[22] Charles Univ Prague, Inst Nucl & Particle Phys, CR-18000 Prague 8, Czech Republic

[23] Weltraum & Astrophys, Inst Theoret Phys, Lehrstuhl 4, D-44780 Bochum, Germany

[24] Univ Namibia, Windhoek, Namibia

[25] Australian Telescope Natl Facil, CSIRO, Epping, NSW 1710, Australia

来源：

ASTRONOMY & ASTROPHYSICS | 2007年 / 466卷 / 02期

关键词：

gamma rays : observations; pulsars : individual : Crab pulsar; pulsars : individual : Vela pulsar; pulsars : individual : PSRB1259-63; pulsars : individual : PSR B1509-58; pulsars : individual : PSRB1706-44;

D O I：

10.1051/0004-6361:20066737

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Aims. We present the results of a search for pulsed very-high-energy (VHE) gamma-ray emission from young pulsars using data taken with the HESS imaging atmospheric Cherenkov telescope system. Methods. Data on eleven pulsars, selected according to their spin-down luminosity relative to distance, are searched for gamma-ray signals with periodicity at the respective pulsar spin period. Special analysis efforts were made to improve the sensitivity in the 100 GeV gamma-ray energy domain in an attempt to reduce the gap between satellite and ground-based gamma-ray instruments. Results. No significant evidence for pulsed emission is found in any data set. Differential upper limits on pulsed energy flux are determined for all selected pulsars in the approximate gamma-ray energy range between 100 GeV and 50 TeV, using different limit determination methods, testing a wide range of possible pulsar light curves and energy spectra. Conclusions. The limits derived here imply that the magnetospheric VHE gamma-ray production efficiency in young pulsars is less than 10(-4) of the pulsar spin-down luminosity, requiring spectral turnovers for the high-energy emission of four established gamma-ray pulsars, and constrain the inverse Compton radiation component predicted by several outer gap models.

引用

页码：543 / 554

页数：12

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