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

Aharonian, F.; Akhperjanian, A.G.; Aye, K.M.; Bazer-Bachi, A.R.; Beilicke, M.; Benbow, W.; Berge, D.; Berghaus, P.; Bernlohr, K.; Boisson, C.; Bolz, O.; Braun, I.; Breitling, F.; Brown, A.M.; Gordo, J.B.; Chadwick, P.M.; Chounet, L.M.; Cornils, R.; Costamante, L.; Degrange, B.; Djannati-Atai, A.; Drury, L.O.; Dubus, G.; Emmanoulopoulos, D.; Espigat, P.; Feinstein, F.; Fleury, P.; Fontaine, G.; Fuchs, Y.; Funk, S.; Gallant, Y.A.; Giebels, B.; Gillessen, S.; Glicenstein, J.F.; Goret, P.; Hadjichristidis, C.; Hauser, M.; Heinzelmann, G.; Henri, G.; Hermann, G.; Hinton, J.A.; Hofmann, W.; Holleran, M.; Horns, D.; de Jager, O.C.; Khelifi, B.; Komin, N.; Konopelko, A.; Latham, I.J.; Le Gallou, R.; Lemiere, A.; Lemoine-Goumard, M.; Leroy, N.; Lohse, T.; Martineau-Huynh, O.; Marcowith, A.; Masterson, C.; McComb, T.J.L.; de Naurois, M.; Nolan, S.J.; Noutsos, A.; Orford, K.J.; Osborne, J.L.; Ouchrif, M.; Panter, M.; Pelletier, G.; Pita, S.; Puhlhofer, G.; Punch, M.; Raubenheimer, B.C.; Raue, M.;...

Authors

F. Aharonian

A.G. Akhperjanian

K.M. Aye

A.R. Bazer-Bachi

M. Beilicke

W. Benbow

D. Berge

P. Berghaus

K. Bernlohr

C. Boisson

O. Bolz

I. Braun

F. Breitling

A.M. Brown

J.B. Gordo

L.M. Chounet

R. Cornils

L. Costamante

B. Degrange

A. Djannati-Atai

L.O. Drury

G. Dubus

D. Emmanoulopoulos

P. Espigat

F. Feinstein

P. Fleury

G. Fontaine

Y. Fuchs

S. Funk

Y.A. Gallant

B. Giebels

S. Gillessen

J.F. Glicenstein

P. Goret

C. Hadjichristidis

M. Hauser

G. Heinzelmann

G. Henri

G. Hermann

J.A. Hinton

W. Hofmann

M. Holleran

D. Horns

O.C. de Jager

B. Khelifi

N. Komin

A. Konopelko

I.J. Latham

R. Le Gallou

A. Lemiere

M. Lemoine-Goumard

N. Leroy

T. Lohse

O. Martineau-Huynh

A. Marcowith

C. Masterson

T.J.L. McComb

M. de Naurois

A. Noutsos

K.J. Orford

M. Ouchrif

M. Panter

G. Pelletier

S. Pita

G. Puhlhofer

M. Punch

B.C. Raubenheimer

M. Raue

J. Raux

S.M. Rayner

I. Redondo

A. Reimer

O. Reimer

J. Ripken

L. Rob

L. Rolland

G. Rowell

V. Sahakian

L. Sauge

S. Schlenker

R. Schlickeiser

C. Schuster

U. Schwanke

M. Siewert

H. Sol

R. Steenkamp

C. Stegmann

J.P. Tavernet

R. Terrier

C.G. Theoret

M. Tluczykont

G. Vasileiadis

C. Venter

P. Vincent

H.J. Volk

S.J. Wagner



Abstract

The Supernova Remnant MSH 15-52 has been observed in very high energy (VHE) γ-rays using the HESS 4-telescope array located in Namibia. A γ-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 PSR B1509–58, with semi-major axis ~ in the NW-SE direction and semi-minor axis ~. 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 . The detected emission can be plausibly explained by inverse Compton scattering of accelerated relativistic electrons with soft photons. 


Journal Article Type Article
Acceptance Date Mar 27, 2005
Online Publication Date Apr 25, 2005
Publication Date 2005-05
Journal Astronomy and astrophysics.
Print ISSN 0004-6361
Electronic ISSN 1432-0746
Publisher EDP Sciences
Peer Reviewed Peer Reviewed
Volume 435
Issue 1
Pages L17-L20
DOI https://doi.org/10.1051/0004-6361%3A200500105
Public URL https://durham-repository.worktribe.com/output/1610661