Search for an extended VHE γ-ray emission from Mrk 421 and Mrk 501 with the MAGIC Telescope

被引：51

作者：

Aleksic, J. ^{[2
]}

Antonelli, L. A. ^{[3
]}

Antoranz, P. ^{[4
,5
]}

Backes, M. ^{[6
]}

Baixeras, C. ^{[7
]}

Barrio, J. A. ^{[8
]}

Bastieri, D. ^{[9
,10
]}

Becerra Gonzalez, J. ^{[11
]}

Bednarek, W. ^{[12
]}

Berdyugin, A. ^{[13
]}

Berger, K. ^{[13
]}

Bernardini, E. ^{[14
]}

Biland, A. ^{[15
]}

Blanch, O. ^{[2
]}

Bock, R. K. ^{[1
,9
,10
]}

Bonnoli, G. ^{[3
]}

Bordas, P. ^{[16
]}

Tridon, D. Borla ^{[1
]}

Bosch-Ramon, V. ^{[16
]}

Bose, D. ^{[8
]}

Braun, I. ^{[15
]}

Bretz, T. ^{[17
]}

Britzger, D. ^{[1
]}

Camara, M. ^{[8
]}

Carmona, E. ^{[1
]}

Carosi, A. ^{[3
]}

Colin, P. ^{[1
]}

Commichau, S. ^{[15
]}

Contreras, J. L. ^{[8
]}

Cortina, J. ^{[2
]}

Costado, M. T. ^{[11
,18
]}

Covino, S. ^{[3
]}

Dazzi, F. ^{[19
,20
]}

De Angelis, A. ^{[19
,20
]}

De Cea del Pozo, E. ^{[21
]}

De los Reyes, R. ^{[8
]}

De Lotto, B. ^{[19
,20
]}

De Maria, M. ^{[19
,20
]}

De Sabata, F. ^{[19
,20
]}

Delgado Mendez, C. ^{[11
]}

Doert, M. ^{[6
]}

Dominguez, A. ^{[22
]}

Prester, D. Dominis ^{[23
]}

Dorner, D. ^{[15
]}

Doro, M. ^{[9
,10
]}

Elsaesser, D. ^{[17
]}

Errando, M. ^{[2
]}

Ferenc, D. ^{[23
]}

Fonseca, M. V. ^{[8
]}

Font, L. ^{[7
]}

机构：

[1] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany

[2] IFAE, Bellaterra 08193, Spain

[3] INAF Natl Inst Astrophys, I-00136 Rome, Italy

[4] Univ Siena, I-53100 Siena, Italy

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

[6] Tech Univ Dortmund, D-44221 Dortmund, Germany

[7] Univ Autonoma Barcelona, Bellaterra 08193, Spain

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

[9] Univ Padua, I-35131 Padua, Italy

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

[11] Inst Astrofis Canarias, Tenerife 38200, Spain

[12] Univ Lodz, PL-90236 Lodz, Poland

[13] Univ Turku, Tuorla Observ, Piikkio 21500, Finland

[14] DESY, D-15738 Zeuthen, Germany

[15] Swiss Fed Inst Technol, CH-8093 Zurich, Switzerland

[16] Univ Barcelona, ICC, IEEC, E-08028 Barcelona, Spain

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

[18] Univ Tenerife, Dept Astron, Tenerife 38206, Spain

[19] Univ Udine, I-33100 Udine, Italy

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

[21] CSIC, IEEC, Inst Ciencies Espai, Bellaterra 08193, Spain

[22] CSIC, Inst Astrofis Andalucia, E-18080 Granada, Spain

[23] Univ Split, Univ Rijeka, Inst R Boskovic, Croatian MAGIC Consortium, Zagreb 10000, Croatia

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

[25] Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, BU-1784 Sofia, Bulgaria

[26] INAF Osservatorio Astron, I-34143 Trieste, Italy

[27] Ist Nazl Fis Nucl, I-34143 Trieste, Italy

[28] ICREA, Barcelona 08010, Spain

[29] Univ Pisa, I-56126 Pisa, Italy

[30] INFN Pisa, I-56126 Pisa, Italy

[31] Observ Geneva, SDC Data Ctr Astrophys, CH-1290 Versoix, Switzerland

[32] APC, F-75205 Paris 13, France

来源：

ASTRONOMY & ASTROPHYSICS | 2010年 / 524卷

关键词：

galaxies: active; gamma-rays: galaxies; TEV ENERGY-SPECTRUM; EXTRAGALACTIC BACKGROUND LIGHT; INTERGALACTIC MAGNETIC-FIELDS; SYSTEM; RADIATION; MARKARIAN-421; HEGRA; FLARE; DISCOVERY; MKN-421;

D O I：

10.1051/0004-6361/201014747

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Context. Part of the very high energy gamma-ray radiation coming from extragalactic sources is absorbed through the pair production process on the extragalactic background light photons. Extragalactic magnetic fields alter the trajectories of these cascade pairs and, in turn, convert cosmic background photons to.-ray energies by inverse Compton scattering. These secondary photons can form an extended halo around bright VHE sources. Aims. We searched for an extended emission around the bright blazars Mrk 421 and Mrk 501 using the MAGIC telescope data. Methods. If extended emission is present, the angular distribution of reconstructed gamma-ray arrival directions around the source is broader than for a point-like source. In the analysis of a few tens of hours of observational data taken from Mrk 421 and Mrk 501 we used a newly developed method that provides better angular resolution. This method is based on the usage of multidimensional decision trees. Comparing the measured shapes of angular distributions with those expected from a point-like source one can detect or constrain possible extended emission around the source. We also studied the influence of different types of systematic errors on the shape of the distribution of reconstructed gamma-ray arrival directions for a point source. Results. We present upper limits for an extended emission calculated for both sources for various source extensions and emission profiles. We obtain upper limits on the extended emission around the Mrk 421 (Mrk 501) on the level of <5% (<4%) of the Crab Nebula flux above the energy threshold of 300 GeV. Using these results we discuss possible constraints on the extragalactic magnetic fields strength around a few times 10(-15) G.

引用

页数：8

共 52 条

[1] FERMI OBSERVATIONS OF TeV-SELECTED ACTIVE GALACTIC NUCLEI
Abdo, A. A.
Ackermann, M.
Ajello, M.
Atwood, W. B.
Axelsson, M.
Baldini, L.
Ballet, J.
Barbiellini, G.
Baring, M. G.
Bastieri, D.
Bechtol, K.
Bellazzini, R.
Berenji, B.
Bloom, E. D.
Bonamente, E.
Borgland, A. W.
Bregeon, J.
Brez, A.
Brigida, M.
Bruel, P.
Burnett, T. H.
Caliandro, G. A.
Cameron, R. A.
Caraveo, P. A.
Casandjian, J. M.
Cavazzuti, E.
Cecchi, C.
Celik, Oe.
Chekhtman, A.
Cheung, C. C.
Chiang, J.
Ciprini, S.
Claus, R.
Cohen-Tanugi, J.
Cominsky, L. R.
Conrad, J.
Cutini, S.
de Angelis, A.
de Palma, F.
di Bernardo, G.
do Couto e Silva, E.
Drell, P. S.
Drlica-Wagner, A.
Dubois, R.
Dumora, D.
Farnier, C.
Favuzzi, C.
Fegan, S. J.
Finke, J.
Focke, W. B.
[J]. ASTROPHYSICAL JOURNAL, 2009, 707 (02) : 1310 - 1333
[2] Radio Imaging of the Very-High-Energy γ-Ray Emission Region in the Central Engine of a Radio Galaxy
Acciari, V. A.
Aliu, E.
Arlen, T.
Bautista, M.
Beilicke, M.
Benbow, W.
Bradbury, S. M.
Buckley, J. H.
Bugaev, V.
Butt, Y.
Byrum, K.
Cannon, A.
Celik, O.
Cesarini, A.
Chow, Y. C.
Ciupik, L.
Cogan, P.
Cui, W.
Dickherber, R.
Fegan, S. J.
Finley, J. P.
Fortin, P.
Fortson, L.
Furniss, A.
Gall, D.
Gillanders, G. H.
Grube, J.
Guenette, R.
Gyuk, G.
Hanna, D.
Holder, J.
Horan, D.
Hui, C. M.
Humensky, T. B.
Imran, A.
Kaaret, P.
Karlsson, N.
Kieda, D.
Kildea, J.
Konopelko, A.
Krawczynski, H.
Krennrich, F.
Lang, M. J.
LeBohec, S.
Maier, G.
McCann, A.
McCutcheon, M.
Millis, J.
Moriarty, P.
Ong, R. A.
[J]. SCIENCE, 2009, 325 (5939) : 444 - 448
[3] An exceptional very high energy gamma-ray flare of PKS 2155-304
Aharonian, F.
Akhperjanian, A. G.
Bazer-Bachi, A. R.
Behera, B.
Beilicke, M.
Benbow, W.
Berge, D.
Bernloehr, K.
Boisson, C.
Bolz, O.
Borrel, V.
Boutelier, T.
Braun, I.
Brion, E.
Brown, A. M.
Buehler, R.
Buesching, I.
Bulik, T.
Carrigan, S.
Chadwick, P. M.
Clapson, A. C.
Chounet, L.-M.
Coignet, G.
Cornils, R.
Costamante, L.
Degrange, B.
Dickinson, H. J.
Djannati-Atai, A.
Domainko, W.
Drury, L. O'C.
Dubus, G.
Dyks, J.
Egberts, K.
Emmanoulopoulos, D.
Espigat, P.
Farnier, C.
Feinstein, F.
Fiasson, A.
Foerster, A.
Fontaine, G.
Funk, Seb.
Funk, S.
Fuessling, M.
Gallant, Y. A.
Giebels, B.
Glicenstein, J. F.
Glueck, B.
Goret, P.
Hadjichristidis, C.
Hauser, D.
[J]. ASTROPHYSICAL JOURNAL, 2007, 664 (02) : L71 - L74
[4] Fast variability of tera-electron volt γ rays from the radio galaxy M87
Aharonian, F.
Akhperjanian, A. G.
Bazer-Bachi, A. R.
Beilicke, M.
Benbow, W.
Berge, D.
Bernloehr, K.
Boisson, C.
Bolz, O.
Borrel, V.
Braun, I.
Brown, A. M.
Buehler, R.
Buesching, I.
Carrigan, S.
Chadwick, P. M.
Chounet, L. -M.
Coignet, G.
Cornils, R.
Costamante, L.
Degrange, B.
Dickinson, H. J.
Djannati-Atai, A.
Drury, L. O'C.
Dubus, G.
Egberts, K.
Emmanoulopoulos, D.
Espigat, P.
Feinstein, F.
Ferrero, E.
Fiasson, A.
Fontaine, G.
Funk, Seb.
Funk, S.
Fuessling, M.
Gallant, Y. A.
Giebels, B.
Glicenstein, J. F.
Goret, P.
Hadjichristidis, C.
Hauser, D.
Hauser, M.
Heinzelmann, G.
Henri, G.
Hermann, G.
Hinton, J. A.
Hoffmann, A.
Hofmann, W.
Holleran, M.
Hoppe, S.
[J]. SCIENCE, 2006, 314 (5804) : 1424 - 1427
[5] TeV γ-ray light curve and energy spectrum of Mkn 421 during its 2001 flare as measured with HEGRA CT1
Aharonian, F
Akhperjanian, A
Beilicke, M
Bernlöhr, K
Börst, HG
Bojahr, H
Bolz, O
Coarasa, JA
Contreras, JL
Cortina, J
Denninghoff, S
Fonseca, V
Girma, M
Goebel, F
Götting, N
Heinzelmann, G
Hermann, G
Heusler, A
Hofmann, W
Horns, D
Jung, I
Kankanyan, R
Kestel, M
Kettler, J
Kohnle, A
Konopelko, A
Kranich, D
Krawczynski, H
Lampeitl, H
López, M
Lorenz, E
Lucarelli, F
Mang, O
Meyer, H
Mirzoyan, R
Moralejo, A
Oña-Wilhelmi, E
Paneque, D
Panter, M
Plyasheshnikov, A
Pühlhofer, G
de los Reyes, R
Rhode, W
Ripken, J
Rowell, G
Sahakian, V
Samorski, M
Schilling, M
Schweizer, T
Sevilla, I
[J]. ASTRONOMY & ASTROPHYSICS, 2003, 410 (03): : 813 - 821
[6] Variations of the TeV energy spectrum at different flux levels of Mkn 421 observed with the HEGRA system of Cherenkov telescopes
Aharonian, F
Akhperjanian, A
Beilicke, M
Bernlöhr, K
Börst, H
Bojahr, H
Bolz, O
Coarasa, T
Contreras, J
Cortina, J
Costamante, L
Denninghoff, S
Fonseca, V
Girma, M
Götting, N
Heinzelmann, G
Hermann, G
Heusler, A
Hofmann, W
Horns, D
Jung, I
Kankanyan, R
Kestel, M
Kettler, J
Kohnle, A
Konopelko, A
Kornmeyer, H
Kranich, D
Krawczynski, H
Lampeitl, H
Lopez, M
Lorenz, E
Lucarelli, F
Mang, O
Meyer, H
Mirzoyan, R
Milite, M
Moralejo, A
Ona, E
Panter, M
Plyasheshnikov, A
Pühlhofer, G
Rauterberg, G
Reyes, R
Rhode, W
Ripken, J
Rowell, G
Sahakian, V
Samorski, M
Schilling, M
[J]. ASTRONOMY & ASTROPHYSICS, 2002, 393 (01) : 89 - 99
[7] DISCOVERY OF VERY HIGH ENERGY γ-RAY EMISSION FROM CENTAURUS A WITH HESS
Aharonian, F.
Akhperjanian, A. G.
Anton, G.
de Almeida, U. Barres
Bazer-Bachi, A. R.
Becherini, Y.
Behera, B.
Benbow, W.
Bernloehr, K.
Boisson, C.
Bochow, A.
Borrel, V.
Brion, E.
Brucker, J.
Brun, P.
Buehler, R.
Bulik, T.
Buesching, I.
Boutelier, T.
Chadwick, P. M.
Charbonnier, A.
Chaves, R. C. G.
Cheesebrough, A.
Chounet, L. -M.
Clapson, A. C.
Coignet, G.
Dalton, M.
Daniel, M. K.
Davids, I. D.
Degrange, B.
Deil, C.
Dickinson, H. J.
Djannati-Atai, A.
Domainko, W.
Drury, L. O'C.
Dubois, F.
Dubus, G.
Dyks, J.
Dyrda, M.
Egberts, K.
Emmanoulopoulos, D.
Espigat, P.
Farnier, C.
Feinstein, F.
Fiasson, A.
Foerster, A.
Fontaine, G.
Fuessling, M.
Gabici, S.
Gallant, Y. A.
[J]. ASTROPHYSICAL JOURNAL LETTERS, 2009, 695 (01) : L40 - L44
[8] The TeV energy spectrum of Markarian 501 measured with the stereoscopic telescope system of HEGRA during 1998 and 1999
Aharonian, F
Akhperjanian, A
Barrio, J
Bernlöhr, K
Börst, H
Bojahr, H
Bolz, O
Contreras, J
Cortina, J
Denninghoff, S
Fonseca, V
Gonzalez, J
Götting, N
Heinzelmann, G
Hermann, G
Heusler, A
Hofmann, W
Horns, D
Iserlohe, C
Ibarra, A
Jung, I
Kankanyan, R
Kestel, M
Kettler, J
Kohnle, A
Konopelko, A
Kornmeyer, H
Kranich, D
Krawczynski, H
Lampeitl, H
Lorenz, E
Lucarelli, F
Magnussen, N
Mang, O
Meyer, H
Mirzoyan, R
Moralejo, A
Padilla, L
Panter, M
Plaga, R
Plyasheshnikov, A
Prahl, J
Pühlhofer, G
Röhring, A
Rhode, W
Rowell, GP
Sahakian, V
Samorski, M
Schilling, M
Schröder, F
[J]. ASTROPHYSICAL JOURNAL, 2001, 546 (02) : 898 - 902
[9] Aharonian FA, 2000, ASTRON ASTROPHYS, V361, P1073
[10] VERY-HIGH-ENERGY GAMMA-RAYS FROM ACTIVE GALACTIC NUCLEI - CASCADING ON THE COSMIC BACKGROUND-RADIATION FIELDS AND THE FORMATION OF PAIR HALOS
AHARONIAN, FA
COPPI, PS
VOLK, HJ
[J]. ASTROPHYSICAL JOURNAL, 1994, 423 (01) : L5 - L8

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