VERY-HIGH ENERGY OBSERVATIONS OF THE GALACTIC CENTER REGION BY VERITAS IN 2010-2012

被引：14

作者：

Archer, A. ^{[1
]}

Barnacka, A. ^{[2
]}

Beilicke, M. ^{[1
]}

Benbow, W. ^{[3
]}

Berger, K. ^{[4
,5
]}

Bird, R. ^{[6
]}

Biteau, J. ^{[7
,8
]}

Buckley, J. H. ^{[1
]}

Bugaev, V. ^{[1
]}

Byrum, K. ^{[9
]}

Cardenzana, J. V. ^{[10
]}

Cerruti, M. ^{[3
]}

Chen, W. ^{[1
]}

Chen, X. ^{[11
,12
]}

Ciupik, L. ^{[13
]}

Connolly, M. P. ^{[14
]}

Cui, W. ^{[15
]}

Dickinson, H. J. ^{[10
]}

Dumm, J. ^{[16
]}

Eisch, J. D. ^{[10
]}

Falcone, A. ^{[17
]}

Federici, S. ^{[11
,12
]}

Feng, Q. ^{[15
]}

Finley, J. P. ^{[15
]}

Fleischhack, H. ^{[12
]}

Fortson, L. ^{[16
]}

Furniss, A. ^{[7
,8
]}

Galante, N. ^{[3
]}

Griffin, S. ^{[18
]}

Griffiths, S. T. ^{[19
]}

Grube, J. ^{[13
]}

Gyuk, G. ^{[13
]}

Hakansson, N. ^{[11
]}

Hanna, D. ^{[18
]}

Holder, J. ^{[4
,5
]}

Hughes, G. ^{[12
]}

Johnson, C. A. ^{[7
,8
]}

Kaaret, P. ^{[19
]}

Kar, P. ^{[20
]}

Kertzman, M. ^{[21
]}

Khassen, Y. ^{[6
]}

Kieda, D. ^{[20
]}

Krawczynski, H. ^{[1
]}

Kumar, S. ^{[4
,5
]}

Lang, M. J. ^{[14
]}

Maier, G. ^{[12
]}

McArthur, S. ^{[22
]}

McCann, A. ^{[23
]}

Meagher, K. ^{[24
,25
]}

Moriarty, P. ^{[14
,26
]}

机构：

[1] Washington Univ, Dept Phys, St Louis, MO 63130 USA

[2] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

[3] Harvard Smithsonian Ctr Astrophys, Fred Lawrence Whipple Observ, Amado, AZ 85645 USA

[4] Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA

[5] Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA

[6] Univ Coll Dublin, Sch Phys, Dublin, Ireland

[7] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA

[8] Univ Calif Santa Cruz, Dept Phys, Santa Cruz, CA 95064 USA

[9] Argonne Natl Lab, Argonne, IL 60439 USA

[10] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA

[11] Univ Potsdam, Inst Phys & Astron, D-14476 Potsdam, Germany

[12] DESY, D-15738 Zeuthen, Germany

[13] Adler Planetarium & Astron Museum, Dept Astron, Chicago, IL 60605 USA

[14] Natl Univ Ireland Galway, Sch Phys, Galway, Ireland

[15] Purdue Univ, Dept Phys & Astron, W Lafayette, IN 47907 USA

[16] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA

[17] Penn State Univ, Dept Astron & Astrophys, Davey Lab 525, University Pk, PA 16802 USA

[18] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada

[19] Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA

[20] Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA

[21] Depauw Univ, Dept Phys & Astron, Greencastle, IN 46135 USA

[22] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA

[23] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA

[24] Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA

[25] Georgia Inst Technol, Ctr Relativist Astrophys, Atlanta, GA 30332 USA

[26] Galway Mayo Inst Technol, Dept Life & Phys Sci, Galway, Ireland

[27] Columbia Univ Barnard Coll, Dept Phys & Astron, New York, NY 10027 USA

[28] Columbia Univ, Dept Phys, New York, NY 10027 USA

[29] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

[30] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[31] Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 94307 USA

[32] Cork Inst Technol, Dept Appl Phys & Instrumentat, Bishopstown, Cork, Ireland

来源：

ASTROPHYSICAL JOURNAL | 2014年 / 790卷 / 02期

基金：

加拿大自然科学与工程研究理事会; 爱尔兰科学基金会; 美国国家科学基金会;

关键词：

astroparticle physics; black hole physics; Galaxy: center; gamma rays: galaxies; methods: data analysis; radiation mechanisms: non-thermal; GAMMA-RAY SOURCE; SGR A-ASTERISK; CRAB-NEBULA; EMISSION; VARIABILITY; DISCOVERY; DIRECTION; BUBBLES; ORIGIN; PULSAR;

D O I：

10.1088/0004-637X/790/2/149

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Galactic center is an interesting region for high-energy (0.1-100 GeV) and very-high-energy (E > 100 GeV) gamma-ray observations. Potential sources of GeV/TeV gamma-ray emission have been suggested, e.g., the accretion of matter onto the supermassive black hole, cosmic rays from a nearby supernova remnant (e.g., Sgr A East), particle acceleration in a plerion, or the annihilation of dark matter particles. The Galactic center has been detected by EGRET and by Fermi/LAT in the MeV/GeV energy band. At TeV energies, the Galactic center was detected with moderate significance by the CANGAROO and Whipple 10 m telescopes and with high significance by H.E.S.S., MAGIC, and VERITAS. We present the results from three years of VERITAS observations conducted at large zenith angles resulting in a detection of the Galactic center on the level of 18 standard deviations at energies above similar to 2.5 TeV. The energy spectrum is derived and is found to be compatible with hadronic, leptonic, and hybrid emission models discussed in the literature. Future, more detailed measurements of the high-energy cutoff and better constraints on the high-energy flux variability will help to refine and/or disentangle the individual models.

引用

页数：9

共 61 条

[1] Simulating the effect of the Sgr A* accretion flow on the appearance of G2 after pericentre
Abarca, David
Adowski, Aleksander S.
Sironi, Lorenzo
[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2014, 440 (02) : 1125 - 1137
[2] FERMI LARGE AREA TELESCOPE FIRST SOURCE CATALOG
Abdo, A. A.
Ackermann, M.
Ajello, M.
Allafort, A.
Antolini, E.
Atwood, W. B.
Axelsson, M.
Baldini, L.
Ballet, J.
Barbiellini, G.
Bastieri, D.
Baughman, B. M.
Bechtol, K.
Bellazzini, R.
Belli, F.
Berenji, B.
Bisello, D.
Blandford, R. D.
Bloom, E. D.
Bonamente, E.
Bonnell, J.
Borgland, A. W.
Bouvier, A.
Bregeon, J.
Brez, A.
Brigida, M.
Bruel, P.
Burnett, T. H.
Busetto, G.
Buson, S.
Caliandro, G. A.
Cameron, R. A.
Campana, R.
Canadas, B.
Caraveo, P. A.
Carrigan, S.
Casandjian, J. M.
Cavazzuti, E.
Ceccanti, M.
Cecchi, C.
Celik, Oe.
Charles, E.
Chekhtman, A.
Cheung, C. C.
Chiang, J.
Cillis, A. N.
Ciprini, S.
Claus, R.
Cohen-Tanugi, J.
Conrad, J.
[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2010, 188 (02) : 405 - 436
[3] Search for a Dark Matter Annihilation Signal from the Galactic Center Halo with HESS
Abramowski, A.
Acero, F.
Aharonian, F.
Akhperjanian, A. G.
Anton, G.
Barnacka, A.
de Almeida, U. Barres
Bazer-Bachi, A. R.
Becherini, Y.
Becker, J.
Behera, B.
Bernloehr, K.
Bochow, A.
Boisson, C.
Bolmont, J.
Bordas, P.
Borrel, V.
Brucker, J.
Brun, F.
Brun, P.
Bulik, T.
Buesching, I.
Carrigan, S.
Casanova, S.
Cerruti, M.
Chadwick, P. M.
Charbonnier, A.
Chaves, R. C. G.
Cheesebrough, A.
Chounet, L. -M.
Clapson, A. C.
Coignet, G.
Conrad, J.
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.
Eger, P.
Espigat, P.
Fallon, L.
[J]. PHYSICAL REVIEW LETTERS, 2011, 106 (16)
[4] Acero F., 2011, MNRAS, V402, P1877
[5] Observations of the crab nebula with HESS
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.
Breitling, F.
Brown, A. M.
Buehler, R.
Buesching, I.
Carrigan, S.
Chadwick, P. M.
Chounet, L. -M.
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.
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.
Hofmann, W.
Holleran, M.
Horns, D.
Jacholkowska, A.
de Jager, O. C.
[J]. ASTRONOMY & ASTROPHYSICS, 2006, 457 (03) : 899 - 915
[6] Discovery of very-high-energy γ-rays from the Galactic Centre ridge
Aharonian, F
Akhperjanian, AG
Bazer-Bachi, AR
Beilicke, M
Benbow, W
Berge, D
Bernlöhr, K
Boisson, C
Bolz, O
Borrel, V
Braun, I
Breitling, F
Brown, AM
Chadwick, PM
Chounet, LM
Cornils, R
Costamante, L
Degrange, B
Dickinson, HJ
Djannati-Ataï, A
Drury, LO
Dubus, G
Emmanoulopoulos, D
Espigat, P
Feinstein, F
Fontaine, G
Fuchs, Y
Funk, S
Gallant, YA
Giebels, B
Gillessen, S
Glicenstein, JF
Goret, P
Hadjichristidis, C
Hauser, D
Hauser, M
Heinzelmann, G
Henri, G
Hermann, G
Hinton, JA
Hofmann, W
Holleran, M
Horns, D
Jacholkowska, A
de Jager, OC
Khélifi, B
Klages, S
Komin, N
Konopelko, A
Latham, IJ
[J]. NATURE, 2006, 439 (7077) : 695 - 698
[7] Very high energy gamma rays from the direction of Sagittarius A
Aharonian, F
Akhperjanian, AG
Aye, KM
Bazer-Bachi, AR
Beilicke, M
Benbow, W
Berge, D
Berghaus, P
Bernlöhr, K
Bolz, O
Boisson, C
Borgmeier, C
Breitling, F
Brown, AM
Gordo, JB
Chadwick, PM
Chitnis, VR
Chounet, LM
Cornils, R
Costamante, L
Degrange, B
Djannati-Ataï, A
Drury, LO
Ergin, T
Espigat, P
Feinstein, F
Fleury, P
Fontaine, G
Funk, S
Gallant, Y
Giebels, B
Gillessen, S
Goret, P
Guy, J
Hadjichristidis, C
Hauser, M
Heinzelmann, G
Henri, G
Hermann, G
Hinton, JA
Hofmann, W
Holleran, M
Horns, D
de Jager, OC
Jung, I
Khélifi, B
Komin, N
Konopelko, A
Latham, IJ
Le Gallou, R
[J]. ASTRONOMY & ASTROPHYSICS, 2004, 425 (01): : L13 - L17
[8] Spectrum and variability of the Galactic center VHE γ-ray source HESS J1745-290
Aharonian, F.
Akhperjanian, A. G.
Anton, G.
de Almeida, U. Barres
Bazer-Bachi, A. R.
Becherini, Y.
Behera, B.
Bernloehr, K.
Boisson, C.
Bochow, A.
Borrel, V.
Braun, I.
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]. ASTRONOMY & ASTROPHYSICS, 2009, 503 (03): : 817 - 825
[9] VHE γ-ray observation of the Crab Nebula and its pulsar with the MAGIC telescope
Albert, J.
Aliu, E.
Anderhub, H.
Antoranz, P.
Armada, A.
Baixeras, C.
Barrio, J. A.
Bartko, H.
Bastieri, D.
Becker, J. K.
Bednarek, W.
Berger, K.
Bigongiari, C.
Biland, A.
Bock, R. K.
Bordas, P.
Bosch-Ramon, V.
Bretz, T.
Britvitch, I.
Camara, M.
Carmona, E.
Chilingarian, A.
Coarasa, J. A.
Commichau, S.
Contreras, J. L.
Cortina, J.
Costado, M. T.
Curtef, V.
Danielyan, V.
Dazzi, F.
De Angelis, A.
Delgado, C.
de los Reyes, R.
De Lotto, B.
Domingo-Santamaria, E.
Dorner, D.
Doro, M.
Errando, M.
Fagiolini, M.
Ferenc, D.
Fernandez, E.
Firpo, R.
Flix, J.
Fonseca, M. V.
Font, L.
Fuchs, M.
Galante, N.
Garcia-Lopez, R.
Garczarczyk, M.
Gaug, M.
[J]. ASTROPHYSICAL JOURNAL, 2008, 674 (02) : 1037 - 1055
[10] Observation of gamma rays from the Galactic center with the magic telescope
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
[J]. ASTROPHYSICAL JOURNAL, 2006, 638 (02) : L101 - L104

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