Observation of very high energy gamma-ray emission from the active galactic nucleus 1ES 1959+650 using the magic telescope

J. Albert; E. Aliu; H. Anderhub; P. Antoranz; A. Armada; M. Asensio; C. Baixeras; J. A. Barrio; H. Bartko; D. Bastieri; 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. Danielyan; F. Dazzi; A. de Angelis; R. de los Reyes; B. de Lotto; E. Domingo-Santamaría; D. Dorner; M. Doro; M. Errando; D. Ferenc; E. Fernández; R. Firpo; J. Flix; M. V. Fonseca; L. Font; N. Galante; M. Garczarczyk; M. Gaug; J. Gebauer; R. Giannitrapani; M. Giller; F. Goebel; D. Hakobyan; M. Hayashida; T. Hengstebeck; D. Hohne; 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; C. Merck; M. Merck; M. Meucci; M. Meyer; J. M. Miranda; R. Mirzoyan; S. Mizobuchi; A. Moralejo; K. Nilsson; E. O. Wilhelmi; R. Orduna; N. Otte; I. Oya; D. Paneque; R. Paoletti; M. Pasanen; D. Pascoli; F. Pauss; N. Pavel; R. Pegna; L. Peruzzo; A. Piccioli; M. Pin; E. Prandini; J. Rico; W. Rhode; B. Riegel; M. Rissi; A. Robert; G. Rossato; S. Rugamer; A. Saggion; A. Sánchez; P. Sartori; V. Scalzotto; R. Schmitt; T. Schweizer; M. Shayduk; K. Shinozaki; N. Sidro; A. Sillanpaa; D. Sobczynska; A. Stamerra; L. Stark; L. Takalo; P. Temnikov; D. Tescaro; M. Teshima; N. Tonello; A. Torres; D. F. Torres; N. Turini; H. Vankov; V. Vitale; R. M. Wagner; T. Wibig; W. Wittek; J. Zapatero

doi:10.1086/499421

Observation of very high energy gamma-ray emission from the active galactic nucleus 1ES 1959+650 using the magic telescope

J. Albert
, E. Aliu
, H. Anderhub
, P. Antoranz
, A. Armada
, M. Asensio
, C. Baixeras
, J. A. Barrio
, H. Bartko
, D. Bastieri
, 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. Danielyan, F. Dazzi, A. de Angelis, R. de los Reyes, B. de Lotto, E. Domingo-Santamaría, D. Dorner, M. Doro, M. Errando, D. Ferenc, E. Fernández, R. Firpo, J. Flix, M. V. Fonseca, L. Font, N. Galante, M. Garczarczyk, M. Gaug, J. Gebauer, R. Giannitrapani, M. Giller, F. Goebel, D. Hakobyan, M. Hayashida, T. Hengstebeck, D. Hohne, 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, C. Merck, M. Merck, M. Meucci, M. Meyer, J. M. Miranda, R. Mirzoyan, S. Mizobuchi, A. Moralejo, K. Nilsson, E. O. Wilhelmi, R. Orduna, N. Otte, I. Oya, D. Paneque, R. Paoletti, M. Pasanen, D. Pascoli, F. Pauss, N. Pavel, R. Pegna, L. Peruzzo, A. Piccioli, M. Pin, E. Prandini, J. Rico, W. Rhode, B. Riegel, M. Rissi, A. Robert, G. Rossato, S. Rugamer, A. Saggion, A. Sánchez, P. Sartori, V. Scalzotto, R. Schmitt, T. Schweizer, M. Shayduk, K. Shinozaki, N. Sidro, A. Sillanpaa, D. Sobczynska, A. Stamerra, L. Stark, L. Takalo, P. Temnikov, D. Tescaro, M. Teshima, N. Tonello, A. Torres, D. F. Torres, N. Turini, H. Vankov, V. Vitale, R. M. Wagner, T. Wibig, W. Wittek, J. Zapatero

Department of Physics

Research output: Contribution to journal › Article › peer-review

80 Scopus citations

Abstract

The MAGIC Cerenkov telescope has observed very high energy (VHE) γ-ray emission from the active galactic nucleus 1ES 1959+650 during 6 hr in 2004 September and October. The observations were carried out alternating with observations of the Crab Nebula, whose data were used as a reference source for optimizing γ -ray/hadron separation and for flux comparison. The data analysis shows VHE γ-ray emission of 1ES 1959+650 with ∼8 σ significance, at a time of low activity in both optical and X-ray wavelengths. An integral flux above ∼ 180 GeV of about 20% that of the Crab Nebula was obtained. The light curve, sampled over 7 days, shows no significant variations. The differential energy spectrum between 180 GeV and 2 TeV can be fitted with a power-law of index -2.72 ± 0.14. The spectrum is consistent with the slightly steeper spectrum seen by HEGRA at higher energies, also during periods of low X-ray activity.

Original language	English
Pages (from-to)	761-765
Number of pages	5
Journal	Astrophysical Journal
Volume	639
Issue number	2 I
DOIs	https://doi.org/10.1086/499421
State	Published - Mar 10 2006

Keywords

Galaxies: active
Gamma rays: observations

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10.1086/499421

Cite this

Albert, J., Aliu, E., Anderhub, H., Antoranz, P., Armada, A., Asensio, M., Baixeras, C., Barrio, J. A., Bartko, H., Bastieri, D., Bednarek, W., Berger, K., Bigongiari, C., Biland, A., Bisesi, E., Bock, R. K., Bretz, T., Britvitch, I., Camara, M., ... Zapatero, J. (2006). Observation of very high energy gamma-ray emission from the active galactic nucleus 1ES 1959+650 using the magic telescope. Astrophysical Journal, 639(2 I), 761-765. https://doi.org/10.1086/499421

@article{193f1d98748c461d82aa00ea8bedf49a,

title = "Observation of very high energy gamma-ray emission from the active galactic nucleus 1ES 1959+650 using the magic telescope",

abstract = "The MAGIC Cerenkov telescope has observed very high energy (VHE) γ-ray emission from the active galactic nucleus 1ES 1959+650 during 6 hr in 2004 September and October. The observations were carried out alternating with observations of the Crab Nebula, whose data were used as a reference source for optimizing γ -ray/hadron separation and for flux comparison. The data analysis shows VHE γ-ray emission of 1ES 1959+650 with ∼8 σ significance, at a time of low activity in both optical and X-ray wavelengths. An integral flux above ∼ 180 GeV of about 20\% that of the Crab Nebula was obtained. The light curve, sampled over 7 days, shows no significant variations. The differential energy spectrum between 180 GeV and 2 TeV can be fitted with a power-law of index -2.72 ± 0.14. The spectrum is consistent with the slightly steeper spectrum seen by HEGRA at higher energies, also during periods of low X-ray activity.",

keywords = "Galaxies: active, 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 H. Bartko and D. Bastieri 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. 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 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 J. Gebauer and R. Giannitrapani and M. Giller and F. Goebel and D. Hakobyan and M. Hayashida and T. Hengstebeck and D. Hohne 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 C. Merck 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 Wilhelmi, \{E. O.\} and R. Orduna 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 M. Pin and E. Prandini and J. Rico and W. Rhode and B. Riegel and M. Rissi and A. Robert and G. Rossato and S. Rugamer and A. Saggion and A. S{\'a}nchez and P. Sartori and V. Scalzotto and R. Schmitt and T. Schweizer and M. Shayduk and K. Shinozaki and N. Sidro and A. Sillanpaa and D. Sobczynska and A. Stamerra and L. Stark and L. Takalo and P. Temnikov and D. Tescaro and M. Teshima and N. Tonello and A. Torres and Torres, \{D. F.\} and N. Turini and H. Vankov and V. Vitale and Wagner, \{R. M.\} and T. Wibig and W. Wittek and J. Zapatero",

year = "2006",

month = mar,

day = "10",

doi = "10.1086/499421",

language = "English",

volume = "639",

pages = "761--765",

journal = "Astrophysical Journal",

issn = "0004-637X",

number = "2 I",

}

Albert, J, Aliu, E, Anderhub, H, Antoranz, P, Armada, A, Asensio, M, Baixeras, C, Barrio, JA, Bartko, H, Bastieri, D, 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, Danielyan, V, Dazzi, F, de Angelis, A, de los Reyes, R, de Lotto, B, Domingo-Santamaría, E, Dorner, D, Doro, M, Errando, M, Ferenc, D, Fernández, E, Firpo, R, Flix, J, Fonseca, MV, Font, L, Galante, N, Garczarczyk, M, Gaug, M, Gebauer, J, Giannitrapani, R, Giller, M, Goebel, F, Hakobyan, D, Hayashida, M, Hengstebeck, T, Hohne, 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, C, Merck, M, Meucci, M, Meyer, M, Miranda, JM, Mirzoyan, R, Mizobuchi, S, Moralejo, A, Nilsson, K, Wilhelmi, EO, Orduna, R, Otte, N, Oya, I, Paneque, D, Paoletti, R, Pasanen, M, Pascoli, D, Pauss, F, Pavel, N, Pegna, R, Peruzzo, L, Piccioli, A, Pin, M, Prandini, E, Rico, J, Rhode, W, Riegel, B, Rissi, M, Robert, A, Rossato, G, Rugamer, S, Saggion, A, Sánchez, A, Sartori, P, Scalzotto, V, Schmitt, R, Schweizer, T, Shayduk, M, Shinozaki, K, Sidro, N, Sillanpaa, A, Sobczynska, D, Stamerra, A, Stark, L, Takalo, L, Temnikov, P, Tescaro, D, Teshima, M, Tonello, N, Torres, A, Torres, DF, Turini, N, Vankov, H, Vitale, V, Wagner, RM, Wibig, T, Wittek, W & Zapatero, J 2006, 'Observation of very high energy gamma-ray emission from the active galactic nucleus 1ES 1959+650 using the magic telescope', Astrophysical Journal, vol. 639, no. 2 I, pp. 761-765. https://doi.org/10.1086/499421

TY - JOUR

T1 - Observation of very high energy gamma-ray emission from the active galactic nucleus 1ES 1959+650 using 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 - Bartko, H.

AU - Bastieri, D.

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 - 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 - 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 - Gebauer, J.

AU - Giannitrapani, R.

AU - Giller, M.

AU - Goebel, F.

AU - Hakobyan, D.

AU - Hayashida, M.

AU - Hengstebeck, T.

AU - Hohne, 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, C.

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 - Wilhelmi, E. O.

AU - Orduna, 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 - Pin, M.

AU - Prandini, E.

AU - Rico, J.

AU - Rhode, W.

AU - Riegel, B.

AU - Rissi, M.

AU - Robert, A.

AU - Rossato, G.

AU - Rugamer, S.

AU - Saggion, A.

AU - Sánchez, A.

AU - Sartori, P.

AU - Scalzotto, V.

AU - Schmitt, R.

AU - Schweizer, T.

AU - Shayduk, M.

AU - Shinozaki, K.

AU - Sidro, N.

AU - Sillanpaa, A.

AU - Sobczynska, D.

AU - Stamerra, A.

AU - Stark, L.

AU - Takalo, L.

AU - Temnikov, P.

AU - Tescaro, D.

AU - Teshima, M.

AU - Tonello, N.

AU - Torres, A.

AU - Torres, D. F.

AU - Turini, N.

AU - Vankov, H.

AU - Vitale, V.

AU - Wagner, R. M.

AU - Wibig, T.

AU - Wittek, W.

AU - Zapatero, J.

PY - 2006/3/10

Y1 - 2006/3/10

N2 - The MAGIC Cerenkov telescope has observed very high energy (VHE) γ-ray emission from the active galactic nucleus 1ES 1959+650 during 6 hr in 2004 September and October. The observations were carried out alternating with observations of the Crab Nebula, whose data were used as a reference source for optimizing γ -ray/hadron separation and for flux comparison. The data analysis shows VHE γ-ray emission of 1ES 1959+650 with ∼8 σ significance, at a time of low activity in both optical and X-ray wavelengths. An integral flux above ∼ 180 GeV of about 20% that of the Crab Nebula was obtained. The light curve, sampled over 7 days, shows no significant variations. The differential energy spectrum between 180 GeV and 2 TeV can be fitted with a power-law of index -2.72 ± 0.14. The spectrum is consistent with the slightly steeper spectrum seen by HEGRA at higher energies, also during periods of low X-ray activity.

AB - The MAGIC Cerenkov telescope has observed very high energy (VHE) γ-ray emission from the active galactic nucleus 1ES 1959+650 during 6 hr in 2004 September and October. The observations were carried out alternating with observations of the Crab Nebula, whose data were used as a reference source for optimizing γ -ray/hadron separation and for flux comparison. The data analysis shows VHE γ-ray emission of 1ES 1959+650 with ∼8 σ significance, at a time of low activity in both optical and X-ray wavelengths. An integral flux above ∼ 180 GeV of about 20% that of the Crab Nebula was obtained. The light curve, sampled over 7 days, shows no significant variations. The differential energy spectrum between 180 GeV and 2 TeV can be fitted with a power-law of index -2.72 ± 0.14. The spectrum is consistent with the slightly steeper spectrum seen by HEGRA at higher energies, also during periods of low X-ray activity.

KW - Galaxies: active

KW - Gamma rays: observations

UR - https://www.scopus.com/pages/publications/33645155525

U2 - 10.1086/499421

DO - 10.1086/499421

M3 - Article

AN - SCOPUS:33645155525

SN - 0004-637X

VL - 639

SP - 761

EP - 765

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2 I

ER -

Observation of very high energy gamma-ray emission from the active galactic nucleus 1ES 1959+650 using the magic telescope

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Keywords

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