Observation of gamma rays from the galactic center with the magic telescope

J. Albert; E. Aliu; H. Anderhub; P. Antoranz; A. Armada; M. Asensio; C. Baixeras; J. A. Barrio; M. Bartelt; H. Bartko; D. Bastieri; R. Bavikadi; W. Bednarek; K. Berger; C. Bigongiari; A. Biland; E. Bisesi; R. K. Bock; T. Bretz; I. Britvitch; M. Camara; A. Chilingarian; S. Ciprini; J. A. Coarasa; S. Commichau; J. L. Contreras; J. Cortina; V. Curtef; V. Danielyan; F. Dazzi; A. De Angelis; R. De Los Reyes; B. De Lotto; E. Domingo-SantamaríA; D. Dorner; M. Doro; M. Errando; M. Fagiolini; D. Ferenc; E. Fernández; R. Firpo; J. Flix; M. V. Fonseca; L. Font; N. Galante; M. Garczarczyk; M. Gaug; M. Giller; F. Goebel; D. Hakobyan; M. Hayashida; T. Hengstebeck; D. Höhne; J. Hose; P. Jacon; O. Kalekin; D. Kranich; A. Laille; T. Lenisa; P. Liebing; E. Lindfors; F. Longo; J. López; M. López; E. Lorenz; F. Lucarelli; P. Majumdar; G. Maneva; K. Mannheim; M. Mariotti; M. Martínez; K. Mase; D. Mazin; M. Merck; M. Meucci; M. Meyer; J. M. Miranda; R. Mirzoyan; S. Mizobuchi; A. Moralejo; K. Nilsson; E. Oña-Wilhelmi; R. Orduña; N. Otte; I. Oya; D. Paneque; R. Paoletti; M. Pasanen; D. Pascoli; F. Pauss; N. Pavel; R. Pegna; L. Peruzzo; A. Piccioli; E. Prandini; J. Rico; W. Rhode; B. Riegel; M. Rissi

doi:10.1086/501164

Observation of gamma rays from the galactic center with the magic telescope

J. Albert, E. Aliu, H. Anderhub, P. Antoranz, A. Armada, M. Asensio, C. Baixeras, J. A. Barrio, M. Bartelt, H. Bartko, D. Bastieri, R. Bavikadi, W. Bednarek, K. Berger, C. Bigongiari, A. Biland, E. Bisesi, R. K. Bock, T. Bretz, I. BritvitchM. Camara, A. Chilingarian, S. Ciprini, J. A. Coarasa, S. Commichau, J. L. Contreras, J. Cortina, V. Curtef, V. Danielyan, F. Dazzi, A. De Angelis, R. De Los Reyes, B. De Lotto, E. Domingo-SantamaríA, D. Dorner, M. Doro, M. Errando, M. Fagiolini, D. Ferenc, E. Fernández, R. Firpo, J. Flix, M. V. Fonseca, L. Font, N. Galante, M. Garczarczyk, M. Gaug, M. Giller, F. Goebel, D. Hakobyan, M. Hayashida, T. Hengstebeck, D. Höhne, J. Hose, P. Jacon, O. Kalekin, D. Kranich, A. Laille, T. Lenisa, P. Liebing, E. Lindfors, F. Longo, J. López, M. López, E. Lorenz, F. Lucarelli, P. Majumdar, G. Maneva, K. Mannheim, M. Mariotti, M. Martínez, K. Mase, D. Mazin, M. Merck, M. Meucci, M. Meyer, J. M. Miranda, R. Mirzoyan, S. Mizobuchi, A. Moralejo, K. Nilsson, E. Oña-Wilhelmi, R. Orduña, N. Otte, I. Oya, D. Paneque, R. Paoletti, M. Pasanen, D. Pascoli, F. Pauss, N. Pavel, R. Pegna, L. Peruzzo, A. Piccioli, E. Prandini, J. Rico, W. Rhode, B. Riegel, M. Rissi

Department of Physics

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179 Scopus citations

Abstract

Recently, the Galactic center has been reported to be a source of very high energy (VHE) γ-rays by the CANGAROO, VERITAS, and HESS experiments. The energy spectra as measured by these experiments show substantial differences. In this Letter we present MAGIC observations of the Galactic center, resulting in the detection of a differential γ-ray flux consistent with a steady, hard-slope power law, described as dN_γ/(dA dt dE) = (2.9 ± 0.6) × 10^-12(E/TeV)^-2.2±0.2 cm ^-2 s^-1 TeV^-1. The γ-ray source is centered at (R.A., decl.) = (17^h45^m20^s, -29°2′). This result confirms the previous measurements by the HESS experiment and indicates a steady source of TeV γ-rays. We briefly describe the observational technique used and the procedure implemented for the data analysis, and we discuss the results in the perspective of different models proposed for the acceleration of the VHE γ-rays.

Original language	English
Pages (from-to)	L101-L104
Journal	Astrophysical Journal
Volume	638
Issue number	2 II
DOIs	https://doi.org/10.1086/501164
State	Published - Feb 20 2006

Keywords

Acceleration of particles
Galaxy: Center
Gamma rays: Observations

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10.1086/501164

Cite this

Albert, J., Aliu, E., Anderhub, H., Antoranz, P., Armada, A., Asensio, M., Baixeras, C., Barrio, J. A., Bartelt, M., Bartko, H., Bastieri, D., Bavikadi, R., Bednarek, W., Berger, K., Bigongiari, C., Biland, A., Bisesi, E., Bock, R. K., Bretz, T., ... Rissi, M. (2006). Observation of gamma rays from the galactic center with the magic telescope. Astrophysical Journal, 638(2 II), L101-L104. https://doi.org/10.1086/501164

@article{474bfa6a3ba1456abcb57881f22e17c1,

title = "Observation of gamma rays from the galactic center with the magic telescope",

abstract = "Recently, the Galactic center has been reported to be a source of very high energy (VHE) γ-rays by the CANGAROO, VERITAS, and HESS experiments. The energy spectra as measured by these experiments show substantial differences. In this Letter we present MAGIC observations of the Galactic center, resulting in the detection of a differential γ-ray flux consistent with a steady, hard-slope power law, described as dNγ/(dA dt dE) = (2.9 ± 0.6) × 10-12(E/TeV)-2.2±0.2 cm -2 s-1 TeV-1. The γ-ray source is centered at (R.A., decl.) = (17h45m20s, -29°2′). This result confirms the previous measurements by the HESS experiment and indicates a steady source of TeV γ-rays. We briefly describe the observational technique used and the procedure implemented for the data analysis, and we discuss the results in the perspective of different models proposed for the acceleration of the VHE γ-rays.",

keywords = "Acceleration of particles, Galaxy: Center, Gamma rays: Observations",

author = "J. Albert and E. Aliu and H. Anderhub and P. Antoranz and A. Armada and M. Asensio and C. Baixeras and Barrio, {J. A.} and M. Bartelt and H. Bartko and D. Bastieri and R. Bavikadi and W. Bednarek and K. Berger and C. Bigongiari and A. Biland and E. Bisesi and Bock, {R. K.} and T. Bretz and I. Britvitch and M. Camara and A. Chilingarian and S. Ciprini and Coarasa, {J. A.} and S. Commichau and Contreras, {J. L.} and J. Cortina and V. Curtef and V. Danielyan and F. Dazzi and {De Angelis}, A. and {De Los Reyes}, R. and {De Lotto}, B. and E. Domingo-Santamar{\'i}A and D. Dorner and M. Doro and M. Errando and M. Fagiolini and D. Ferenc and E. Fern{\'a}ndez and R. Firpo and J. Flix and Fonseca, {M. V.} and L. Font and N. Galante and M. Garczarczyk and M. Gaug and M. Giller and F. Goebel and D. Hakobyan and M. Hayashida and T. Hengstebeck and D. H{\"o}hne and J. Hose and P. Jacon and O. Kalekin and D. Kranich and A. Laille and T. Lenisa and P. Liebing and E. Lindfors and F. Longo and J. L{\'o}pez and M. L{\'o}pez and E. Lorenz and F. Lucarelli and P. Majumdar and G. Maneva and K. Mannheim and M. Mariotti and M. Mart{\'i}nez and K. Mase and D. Mazin and M. Merck and M. Meucci and M. Meyer and Miranda, {J. M.} and R. Mirzoyan and S. Mizobuchi and A. Moralejo and K. Nilsson and E. O{\~n}a-Wilhelmi and R. Ordu{\~n}a and N. Otte and I. Oya and D. Paneque and R. Paoletti and M. Pasanen and D. Pascoli and F. Pauss and N. Pavel and R. Pegna and L. Peruzzo and A. Piccioli and E. Prandini and J. Rico and W. Rhode and B. Riegel and M. Rissi",

year = "2006",

month = feb,

day = "20",

doi = "10.1086/501164",

language = "English",

volume = "638",

pages = "L101--L104",

journal = "Astrophysical Journal",

issn = "0004-637X",

number = "2 II",

}

Albert, J, Aliu, E, Anderhub, H, Antoranz, P, Armada, A, Asensio, M, Baixeras, C, Barrio, JA, Bartelt, M, Bartko, H, Bastieri, D, Bavikadi, R, Bednarek, W, Berger, K, Bigongiari, C, Biland, A, Bisesi, E, Bock, RK, Bretz, T, Britvitch, I, Camara, M, Chilingarian, A, Ciprini, S, Coarasa, JA, Commichau, S, Contreras, JL, Cortina, J, Curtef, V, Danielyan, V, Dazzi, F, De Angelis, A, De Los Reyes, R, De Lotto, B, Domingo-SantamaríA, E, Dorner, D, Doro, M, Errando, M, Fagiolini, M, Ferenc, D, Fernández, E, Firpo, R, Flix, J, Fonseca, MV, Font, L, Galante, N, Garczarczyk, M, Gaug, M, Giller, M, Goebel, F, Hakobyan, D, Hayashida, M, Hengstebeck, T, Höhne, D, Hose, J, Jacon, P, Kalekin, O, Kranich, D, Laille, A, Lenisa, T, Liebing, P, Lindfors, E, Longo, F, López, J, López, M, Lorenz, E, Lucarelli, F, Majumdar, P, Maneva, G, Mannheim, K, Mariotti, M, Martínez, M, Mase, K, Mazin, D, Merck, M, Meucci, M, Meyer, M, Miranda, JM, Mirzoyan, R, Mizobuchi, S, Moralejo, A, Nilsson, K, Oña-Wilhelmi, E, Orduña, R, Otte, N, Oya, I, Paneque, D, Paoletti, R, Pasanen, M, Pascoli, D, Pauss, F, Pavel, N, Pegna, R, Peruzzo, L, Piccioli, A, Prandini, E, Rico, J, Rhode, W, Riegel, B & Rissi, M 2006, 'Observation of gamma rays from the galactic center with the magic telescope', Astrophysical Journal, vol. 638, no. 2 II, pp. L101-L104. https://doi.org/10.1086/501164

TY - JOUR

T1 - Observation of gamma rays from the galactic center with the magic telescope

AU - Albert, J.

AU - Aliu, E.

AU - Anderhub, H.

AU - Antoranz, P.

AU - Armada, A.

AU - Asensio, M.

AU - Baixeras, C.

AU - Barrio, J. A.

AU - Bartelt, M.

AU - Bartko, H.

AU - Bastieri, D.

AU - Bavikadi, R.

AU - Bednarek, W.

AU - Berger, K.

AU - Bigongiari, C.

AU - Biland, A.

AU - Bisesi, E.

AU - Bock, R. K.

AU - Bretz, T.

AU - Britvitch, I.

AU - Camara, M.

AU - Chilingarian, A.

AU - Ciprini, S.

AU - Coarasa, J. A.

AU - Commichau, S.

AU - Contreras, J. L.

AU - Cortina, J.

AU - Curtef, V.

AU - Danielyan, V.

AU - Dazzi, F.

AU - De Angelis, A.

AU - De Los Reyes, R.

AU - De Lotto, B.

AU - Domingo-SantamaríA, E.

AU - Dorner, D.

AU - Doro, M.

AU - Errando, M.

AU - Fagiolini, M.

AU - Ferenc, D.

AU - Fernández, E.

AU - Firpo, R.

AU - Flix, J.

AU - Fonseca, M. V.

AU - Font, L.

AU - Galante, N.

AU - Garczarczyk, M.

AU - Gaug, M.

AU - Giller, M.

AU - Goebel, F.

AU - Hakobyan, D.

AU - Hayashida, M.

AU - Hengstebeck, T.

AU - Höhne, D.

AU - Hose, J.

AU - Jacon, P.

AU - Kalekin, O.

AU - Kranich, D.

AU - Laille, A.

AU - Lenisa, T.

AU - Liebing, P.

AU - Lindfors, E.

AU - Longo, F.

AU - López, J.

AU - López, M.

AU - Lorenz, E.

AU - Lucarelli, F.

AU - Majumdar, P.

AU - Maneva, G.

AU - Mannheim, K.

AU - Mariotti, M.

AU - Martínez, M.

AU - Mase, K.

AU - Mazin, D.

AU - Merck, M.

AU - Meucci, M.

AU - Meyer, M.

AU - Miranda, J. M.

AU - Mirzoyan, R.

AU - Mizobuchi, S.

AU - Moralejo, A.

AU - Nilsson, K.

AU - Oña-Wilhelmi, E.

AU - Orduña, R.

AU - Otte, N.

AU - Oya, I.

AU - Paneque, D.

AU - Paoletti, R.

AU - Pasanen, M.

AU - Pascoli, D.

AU - Pauss, F.

AU - Pavel, N.

AU - Pegna, R.

AU - Peruzzo, L.

AU - Piccioli, A.

AU - Prandini, E.

AU - Rico, J.

AU - Rhode, W.

AU - Riegel, B.

AU - Rissi, M.

PY - 2006/2/20

Y1 - 2006/2/20

N2 - Recently, the Galactic center has been reported to be a source of very high energy (VHE) γ-rays by the CANGAROO, VERITAS, and HESS experiments. The energy spectra as measured by these experiments show substantial differences. In this Letter we present MAGIC observations of the Galactic center, resulting in the detection of a differential γ-ray flux consistent with a steady, hard-slope power law, described as dNγ/(dA dt dE) = (2.9 ± 0.6) × 10-12(E/TeV)-2.2±0.2 cm -2 s-1 TeV-1. The γ-ray source is centered at (R.A., decl.) = (17h45m20s, -29°2′). This result confirms the previous measurements by the HESS experiment and indicates a steady source of TeV γ-rays. We briefly describe the observational technique used and the procedure implemented for the data analysis, and we discuss the results in the perspective of different models proposed for the acceleration of the VHE γ-rays.

AB - Recently, the Galactic center has been reported to be a source of very high energy (VHE) γ-rays by the CANGAROO, VERITAS, and HESS experiments. The energy spectra as measured by these experiments show substantial differences. In this Letter we present MAGIC observations of the Galactic center, resulting in the detection of a differential γ-ray flux consistent with a steady, hard-slope power law, described as dNγ/(dA dt dE) = (2.9 ± 0.6) × 10-12(E/TeV)-2.2±0.2 cm -2 s-1 TeV-1. The γ-ray source is centered at (R.A., decl.) = (17h45m20s, -29°2′). This result confirms the previous measurements by the HESS experiment and indicates a steady source of TeV γ-rays. We briefly describe the observational technique used and the procedure implemented for the data analysis, and we discuss the results in the perspective of different models proposed for the acceleration of the VHE γ-rays.

KW - Acceleration of particles

KW - Galaxy: Center

KW - Gamma rays: Observations

UR - http://www.scopus.com/inward/record.url?scp=33644746354&partnerID=8YFLogxK

U2 - 10.1086/501164

DO - 10.1086/501164

M3 - Article

AN - SCOPUS:33644746354

SN - 0004-637X

VL - 638

SP - L101-L104

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2 II

ER -

Observation of gamma rays from the galactic center with the magic telescope

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Keywords

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