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

被引：64

作者：

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

机构：

[1] Univ Wurzburg, D-97074 Wurzburg, Germany

[2] Inst Fis Altes Energies, E-08193 Bellaterra, Spain

[3] ETH Honggerberg, Inst Particle Phys, HPK, CH-8093 Zurich, Switzerland

[4] Univ Complutense Madrid, E-28040 Madrid, Spain

[5] Univ Autonoma Barcelona, Dept Fis, E-08193 Bellaterra, Spain

[6] Max Planck Inst Phys & Astrophys, D-80895 Munich, Germany

[7] Univ Padua, Dipartimento Fis, I-35131 Padua, Italy

[8] Ist Nazl Fis Nucl, I-35131 Padua, Italy

[9] Univ Lodz, Div Expt Phys, PL-90236 Lodz, Poland

[10] Univ Udine, Dipartimento Fis, I-33100 Udine, Italy

[11] INFN Trieste, I-33100 Udine, Italy

[12] Yerevan Phys Inst, Cosm Ray Div, AM-375036 Yerevan, Armenia

[13] Tuorla Observ, FI-21500 Piikkio, Finland

[14] Univ Calif Davis, Davis, CA 95616 USA

[15] Univ Siena, Dipartimento Fis, I-53100 Siena, Italy

[16] INFN Pisa, I-53100 Siena, Italy

[17] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany

[18] Inst Nucl Energy Res, BG-1784 Sofia, Bulgaria

[19] Univ Dortmund, Fachbereich Phys, D-44227 Dortmund, Germany

来源：

ASTROPHYSICAL JOURNAL | 2006年 / 639卷 / 02期

关键词：

galaxies : active; galaxies : individual (1ES 1959+650); gamma rays : observations;

D O I：

10.1086/499421

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The MAGIC Cerenkov telescope has observed very high energy (VHE) gamma-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 gamma -ray/hadron separation and for flux comparison. The data analysis shows VHE gamma-ray emission of 1ES 1959+650 with similar to 8 sigma significance, at a time of low activity in both optical and X-ray wavelengths. An integral flux above similar to 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.

引用

页码：761 / 765

页数：5

共 35 条

[1] Detection of TeV gamma-rays from the BL Lac 1ES 1959+650 in its low states and during a major outburst in 2002
Aharonian, F
Akhperjanian, A
Beilicke, M
Bernlöhr, K
Börst, HG
Bojahr, H
Bolz, O
Coarasa, T
Contreras, JL
Cortina, J
Denninghoff, S
Fonseca, MV
Girma, M
Götting, N
Heinzelmann, G
Hermann, G
Heusler, A
Hofmann, W
Horns, D
Jung, I
Kankanyan, R
Kestel, M
Kohnle, A
Konopelko, A
Kornmeyer, H
Kranich, D
Lampeitl, H
Lopez, M
Lorenz, E
Lucarelli, F
Mang, O
Meyer, H
Mirzoyan, R
Moralejo, A
Ona-Wilhelmi, E
Panter, M
Plyasheshnikov, A
Pühlhofer, G
de los Reyes, R
Rhode, W
Ripken, J
Robrade, J
Rowell, G
Sahakian, V
Samorski, M
Schilling, M
Siems, M
Sobzynska, D
Stamm, W
Tluczykont, M
[J]. ASTRONOMY & ASTROPHYSICS, 2003, 406 (01) : L9 - L13
[2] TeV gamma rays from BL Lac objects due to synchrotron radiation of extremely high energy protons
Aharonian, FA
[J]. NEW ASTRONOMY, 2000, 5 (07) : 377 - 395
[3] Sensitivity of the IceCube detector to astrophysical sources of high energy muon neutrinos
Ahrens, J
Bahcall, JN
Bai, X
Bay, RC
Becka, T
Becker, KH
Berley, D
Bernardini, E
Bertrand, D
Besson, DZ
Biron, A
Blaufuss, E
Boersma, DJ
Böser, S
Bohm, C
Botner, O
Bouchta, A
Bouhali, O
Burgess, T
Carithers, W
Castermans, T
Cavin, J
Chinowsky, W
Chirkin, D
Collin, B
Conrad, J
Cooley, J
Cowen, DF
Davour, A
De Clercq, C
DeYoung, T
Desiati, P
Ehrlich, R
Ellsworth, RW
Evenson, PA
Fazely, AR
Feser, T
Gaisser, TK
Gallagher, J
Ganugapati, R
Geenen, H
Goldschmidt, A
Goodman, JA
Gunasingha, RM
Hallgren, A
Halzen, F
Hanson, K
Hardtke, R
Hauschildt, T
Hays, D
[J]. ASTROPARTICLE PHYSICS, 2004, 20 (05) : 507 - 532
[4] Commissioning and first tests of the MAGIC telescope
Baixeras, C
Bastieri, D
Bigongiari, C
Blanch, O
Blanchot, G
Bock, R
Bretz, T
Chilingarian, A
Coarasa, JA
Colombo, E
Contreras, JC
Corti, D
Cortina, J
Domingo, C
Domingo, E
Ferenc, D
Fernández, E
Flix, J
Fonseca, V
Font, L
Galante, N
Gaug, M
Garczarczyk, M
Gebauer, J
Giller, M
Goebel, F
Hengstebeck, T
Jacone, P
de Jager, OC
Kalekin, O
Kestel, M
Kneiske, T
Laille, A
López, M
López, J
Lorenz, E
Mannheim, K
Mariotti, M
Martínez, M
Mase, K
Merck, M
Meucci, A
Miralles, L
Mirzoyan, R
Moralejo, A
Wilhelmi, EO
Orduña, R
Paneque, D
Paoletti, R
Pascoli, D
[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2004, 518 (1-2) : 188 - 192
[5] BERNARDINI E, 2006, IN PRESS NETWORK ATM, V7
[6] Methods for multidimensional event classification: a case study using images from a Cherenkov gamma-ray telescope
Bock, RK
Chilingarian, A
Gaug, M
Hakl, F
Hengstebeck, T
Jirina, M
Klaschka, J
Kotrc, E
Savicky, P
Towers, S
Vaiclulis, A
Wittek, W
[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2004, 516 (2-3) : 511 - 528
[7] BOETTCHER M, 2005, APJ, V621, P176
[8] Random forests
Breiman, L
[J]. MACHINE LEARNING, 2001, 45 (01) : 5 - 32
[9] CORTINA J, 2005, P 29 INT COSM RAY C
[10] Spectrum of very high energy gamma-rays from the blazar 1ES 1959+650 during flaring activity in 2002
Daniel, MK
Badran, HM
Bond, IH
Boyle, PJ
Bradbury, SM
Buckley, JH
Carter-Lewis, DA
Catanese, M
Celik, O
Cogan, P
Cui, W
D'Vali, M
Perez, ID
Duke, C
Falcone, A
Fegan, DJ
Fegan, SJ
Finley, JP
Fortson, LF
Gaidos, JA
Gammell, S
Gibbs, K
Gillanders, GH
Grube, J
Hall, J
Hall, TA
Hanna, D
Hillas, AM
Holder, J
Horan, D
Humensky, TB
Jarvis, A
Jordan, M
Kenny, GE
Kertzman, M
Kieda, D
Kildea, J
Knapp, J
Kosack, K
Krawczynski, H
Krennrich, F
Lang, MJ
Le Bohec, S
Linton, E
Lloyd-Evans, J
Milovanovic, A
Moriarty, P
Müller, D
Nagai, T
Nolan, S
[J]. ASTROPHYSICAL JOURNAL, 2005, 621 (01) : 181 - 187

← 1 2 3 4 →