Very high energy gamma rays from the direction of Sagittarius A<SUP>*</SUP>

Aharonian, F.; Akhperjanian, A.G.; Aye, K.-M.; Bazer-Bachi, A.R.; Beilicke, M.; Benbow, W.; Berge, D.; Berghaus, P.; Bernlöhr, K.; Bolz, O.; Boisson, C.; Borgmeier, C.; Breitling, F.; Brown, A.M.; Bussons, Gordo J.; Chadwick, P.M.; Chitnis, V.R.; Chounet, L.-M.; Cornils, R.; Costamante, L.; Degrange, B.; Djannati-Ataï, A.; Drury, L. O'C.; Ergin, T.; Espigat, P.; Feinstein, F.; Fleury, P.; Fontaine, G.; Funk, S.; Gallant, Y.A.; Giebels, B.; Gillessen, S.; Goret, P.; Guy, J.; Hadjichristidis, C.; Hauser, M.; Heinzelmann, G.; Henri, G.; Hermann, G.; Hinton, J.A.; Hofmann, W.; Holleran, M.; Horns, D.; de Jager, O.C.; Jung, I.; Khélifi, B.; Komin, N.; Konopelko, A.; Latham, I.J.; Le Gallou, R.; Lemoine, M.; Lemière, A.; Leroy, N.; Lohse, T.; 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.; Pohl, M.; Pühlhofer, G.; Punch, M.; Raubenheimer, B.C.; Raue, M.; Raux, J.; Rayner, S.M.; Redondo, I.; Reimer, A.; Reimer, O.; Ripken, J.; Rivoal, M.; Rob, L.; Rolland, L.; Rowell, G.; Sahakian, V.; Saugé, L.; Schlenker, S.; Schlickeiser, R.; Schuster, C.; Schwanke, U.; Siewert, M.; Sol, H.; Steenkamp, R.; Stegmann, C.; Tavernet, J.-P.; Théoret, C.G.; Tluczykont, M.; van der Walt, D.J.; Vasileiadis, G.; Vincent, P.; Visser, B.; Völk, H.J.; Wagner, S.

doi:10.1051/0004-6361:200400055

Very high energy gamma rays from the direction of Sagittarius A<SUP>*</SUP>

Aharonian, F.; Akhperjanian, A.G.; Aye, K.-M.; Bazer-Bachi, A.R.; Beilicke, M.; Benbow, W.; Berge, D.; Berghaus, P.; Bernlöhr, K.; Bolz, O.; Boisson, C.; Borgmeier, C.; Breitling, F.; Brown, A.M.; Bussons, Gordo J.; Chadwick, P.M.; Chitnis, V.R.; Chounet, L.-M.; Cornils, R.; Costamante, L.; Degrange, B.; Djannati-Ataï, A.; Drury, L. O'C.; Ergin, T.; Espigat, P.; Feinstein, F.; Fleury, P.; Fontaine, G.; Funk, S.; Gallant, Y.A.; Giebels, B.; Gillessen, S.; Goret, P.; Guy, J.; Hadjichristidis, C.; Hauser, M.; Heinzelmann, G.; Henri, G.; Hermann, G.; Hinton, J.A.; Hofmann, W.; Holleran, M.; Horns, D.; de Jager, O.C.; Jung, I.; Khélifi, B.; Komin, N.; Konopelko, A.; Latham, I.J.; Le Gallou, R.; Lemoine, M.; Lemière, A.; Leroy, N.; Lohse, T.; 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.; Pohl, M.; Pühlhofer, G.; Punch, M.; Raubenheimer, B.C.; Raue, M.; Raux, J.; Rayner, S....

Authors

F. Aharonian

A.G. Akhperjanian

K.-M. Aye

A.R. Bazer-Bachi

M. Beilicke

W. Benbow

D. Berge

P. Berghaus

K. Bernlöhr

O. Bolz

C. Boisson

C. Borgmeier

F. Breitling

A.M. Brown

Gordo J. Bussons

Professor Paula Chadwick p.m.chadwick@durham.ac.uk
Head Of Department

V.R. Chitnis

L.-M. Chounet

R. Cornils

L. Costamante

B. Degrange

A. Djannati-Ataï

L. O'C. Drury

T. Ergin

P. Espigat

F. Feinstein

P. Fleury

G. Fontaine

S. Funk

Y.A. Gallant

B. Giebels

S. Gillessen

P. Goret

J. Guy

C. Hadjichristidis

M. Hauser

G. Heinzelmann

G. Henri

G. Hermann

J.A. Hinton

W. Hofmann

M. Holleran

D. Horns

O.C. de Jager

I. Jung

B. Khélifi

N. Komin

A. Konopelko

I.J. Latham

R. Le Gallou

M. Lemoine

A. Lemière

N. Leroy

T. Lohse

A. Marcowith

C. Masterson

T.J.L. McComb

M. de Naurois

Professor Sam Nolan s.j.nolan@durham.ac.uk
Director Of Dcad

A. Noutsos

K.J. Orford

Dr John Osborne j.l.osborne@durham.ac.uk
Emeritus

M. Ouchrif

M. Panter

G. Pelletier

S. Pita

M. Pohl

G. Pühlhofer

M. Punch

B.C. Raubenheimer

M. Raue

J. Raux

S.M. Rayner

I. Redondo

A. Reimer

O. Reimer

J. Ripken

M. Rivoal

L. Rob

L. Rolland

G. Rowell

V. Sahakian

L. Saugé

S. Schlenker

R. Schlickeiser

C. Schuster

U. Schwanke

M. Siewert

H. Sol

R. Steenkamp

C. Stegmann

J.-P. Tavernet

C.G. Théoret

M. Tluczykont

D.J. van der Walt

G. Vasileiadis

P. Vincent

B. Visser

H.J. Völk

S. Wagner

Abstract

We report the detection of a point-like source of very high energy (VHE) -rays coincident within 1' of Sgr A *, obtained with the HESS array of Cherenkov telescopes. The -rays exhibit a power-law energy spectrum with a spectral index of and a flux above the 165 GeV threshold of m -2 s -1. The measured flux and spectrum differ substantially from recent results reported in particular by the CANGAROO collaboration.

Citation

Aharonian, F., Akhperjanian, A. G., Aye, K.-M., Bazer-Bachi, A. R., Beilicke, M., Benbow, W., Berge, D., Berghaus, P., Bernlöhr, K., Bolz, O., Boisson, C., Borgmeier, C., Breitling, F., Brown, A. M., Bussons, G. J., Chadwick, P. M., Chitnis, V. R., Chounet, L.-M., Cornils, R., …Wagner, S. (2004). Very high energy gamma rays from the direction of Sagittarius A*. Astronomy & Astrophysics, 425(1), L13-L17. https://doi.org/10.1051/0004-6361%3A200400055

Journal Article Type	Article
Publication Date	Oct 1, 2004
Deposit Date	May 29, 2008
Publicly Available Date	May 29, 2008
Journal	Astronomy and astrophysics.
Print ISSN	0004-6361
Electronic ISSN	1432-0746
Publisher	EDP Sciences
Peer Reviewed	Peer Reviewed
Volume	425
Issue	1
Pages	L13-L17
DOI	https://doi.org/10.1051/0004-6361%3A200400055
Keywords	Gamma-rays, Observations, Galaxy centre.
Public URL	https://durham-repository.worktribe.com/output/1602595