Discovery of extended VHE gamma-ray emission from the asymmetric pulsar wind nebula in MSH 15-52 with HESS

被引：129

作者：

Aharonian, F ^{[1
]}

Akhperjanian, AG

Aye, KM

Bazer-Bachi, AR

Beilicke, M

Benbow, W

Berge, D

Berghaus, P

Bernlöhr, K

Boisson, C

Bolz, O

Braun, I

Breitling, F

Brown, AM

Gordo, JB

Chadwick, PM

Chounet, LM

Cornils, R

Costamante, L

Degrange, B

Djannati-Ataï, A

Drury, LO

Dubus, G

Emmanoulopoulos, D

Espigat, P

Feinstein, F

Fleury, P

Fontaine, G

Fuchs, Y

Funk, S

Gallant, YA

Giebels, B

Gillessen, S

Glicenstein, JF

Goret, P

Hadjichristidis, C

Hauser, M

Heinzelmann, G

Henri, G

Hermann, G

Hinton, JA

Hofmann, W

Holleran, M

Horns, D

de Jager, OC

Khélifi, B

Komin, N

Konopelko, A

Latham, IJ

Le Gallou, R

机构：

[1] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany

[2] Yerevan Phys Inst, Yerevan, Armenia

[3] Univ Durham, Dept Phys, Durham DH1 3HP, England

[4] UPS, CNRS, Ctr Etud Spatiale Rayonnements, Toulouse, France

[5] Univ Hamburg, Inst Expt Phys, Hamburg, Germany

[6] Univ Paris 07, APC, Observ Paris, CEA,CNRS,UMR 7164, Paris, France

[7] Humboldt Univ, Inst Phys, D-1086 Berlin, Germany

[8] Observ Paris, Sect Meudon, LUTH, CNRS,UMR 8102, Paris, France

[9] Univ Montpellier 2, Grp Astroparticules Montpellier, CNRS, IN2P3, F-34095 Montpellier, France

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

[11] Dublin Inst Adv Studies, Dublin, Ireland

[12] Landessternwarte Konigstuhl, D-6900 Heidelberg, Germany

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

[14] CE Saclay, CEA, DSM, DAPNIA, Gif Sur Yvette, France

[15] North West Univ, Unit Space Phys, Potchefstroom, South Africa

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

[17] Univ Paris 07, Lab Phys Nucl & Hautes Energies, CNRS, IN2P3, F-75221 Paris, France

[18] Ruhr Univ Bochum, Inst Theoret Phys, Lehrstuhl Weltraum & Astrophys 4, Bochum, Germany

[19] Charles Univ, Inst Nucl & Particle Phys, Prague, Czech Republic

[20] Univ Namibia, Windhoek, Namibia

来源：

ASTRONOMY & ASTROPHYSICS | 2005年 / 435卷 / 01期

关键词：

gamma-rays : observations; ISM : supernova remnants; pulsar wind nebula; ISM : individual objects : PSRB1509-58 ISM : individual objects : G320.4-1.2;

D O I：

10.1051/0004-6361:200500105

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Supernova Remnant MSH 15-52 has been observed in very high energy (VHE) gamma-rays using the HESS 4-telescope array located in Namibia. A gamma-ray signal is detected at the 25 sigma level during an exposure of 22.1 h live time. The image reveals an elliptically shaped emission region around the pulsar PSRB1509 - 58, with semi-major axis similar to 6' in the NW-SE direction and semi-minor axis similar to 2'. This morphology coincides with the diffuse pulsar wind nebula as observed at X-ray energies by ROSAT. The overall energy spectrum from 280 GeV up to 40 TeV can be fitted by a power law with photon index Gamma = 2.27 +/- 0.03(stat) +/- 0.20(syst). The detected emission can be plausibly explained by inverse Compton scattering of accelerated relativistic electrons with soft photons.

引用

页码：L17 / L20

页数：4

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