Statistics of VHE γ-rays in temporal association with radio giant pulses from the Crab pulsar

被引：1

作者：

Ahnen, M. L. ^{[1
]}

Ansoldi, S. ^{[2
,3
,4
,5
,6
]}

Antonelli, L. A. ^{[7
]}

Arcaro, C. ^{[8
,9
]}

Babic, A. ^{[10
,11
,12
,13
,14
]}

Banerjee, B. ^{[15
]}

Bangale, P. ^{[16
]}

de Almeida, U. Barres ^{[16
,17
]}

Barrio, J. A. ^{[18
]}

Becerra Gonzalez, J. ^{[19
,20
]}

Bednarek, W. ^{[21
]}

Bernardini, E. ^{[22
,23
]}

Berti, A. ^{[2
,3
,24
]}

Bhattacharyya, W. ^{[22
]}

Biasuzzi, B. ^{[2
,3
]}

Biland, A. ^{[1
]}

Blanch, O. ^{[25
]}

Bonnoli, G. ^{[26
,27
]}

Carosi, R. ^{[26
,27
]}

Carosi, A. ^{[7
]}

Chatterjee, A. ^{[15
]}

Colak, S. M. ^{[25
]}

Colin, P. ^{[16
]}

Colombo, E. ^{[19
,20
]}

Contreras, J. L. ^{[18
]}

Cortina, J. ^{[25
]}

Covino, S. ^{[7
]}

Cumani, P. ^{[25
]}

De Vela, P. ^{[26
,27
]}

Dazzi, F. ^{[7
]}

De Angelis, A. ^{[8
,9
]}

De Lotto, B. ^{[2
,3
]}

Di Pierro, F. ^{[8
,9
]}

Doert, M. ^{[28
]}

Dominguez, A. ^{[18
]}

Prester, D. Dominis ^{[10
,11
,12
,13
,14
]}

Dorner, D. ^{[29
]}

Doro, M. ^{[8
,9
]}

Einecke, S. ^{[28
]}

Glawion, D. Eisenacher ^{[29
]}

Elsaesser, D. ^{[28
]}

Engelkemeier, M. ^{[28
]}

Ramazani, V. Fallah ^{[30
,31
,32
]}

Fernandez-Barral, A. ^{[25
]}

Fidalgo, D. ^{[18
]}

Fonseca, M., V ^{[18
]}

Font, L. ^{[33
,34
]}

Fruck, C. ^{[16
]}

Galindo, D. ^{[35
]}

Garcia Lopez, R. J. ^{[19
,20
]}

机构：

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

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

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

[4] Univ Tokyo, Japanese Mag Consortium ICRR, Chiba 2778582, Japan

[5] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan

[6] Tokai Univ, Tokai, Kanagawa 2591292, Japan

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

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

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

[10] Univ Rijeka, Dept Phys, Croatian Mag Consortium, Rijeka 51000, Croatia

[11] Univ Split, FESB, Split 21000, Croatia

[12] Univ Zagreb, FER, Zagreb 10000, Croatia

[13] Univ Osijek, Osijek 31000, Croatia

[14] Rudjer Boskovic Inst, Zagreb 10000, Croatia

[15] HBNI, Saha Inst Nucl Phys, 1-AF Bidhannagar,Sect 1, Kolkata 700064, India

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

[17] Urca, CBPF, BR-22290180 Rio De Janeiro, RJ, Brazil

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

[19] Inst Astrofis Canarias, E-38200 Tenerife, Spain

[20] Univ La Laguna, Dept Astrofis, E-38206 Tenerife, Spain

[21] Univ Lodz, Dept Astrophys, PL-90236 Lodz, Poland

[22] DESY, D-15738 Zeuthen, Germany

[23] Humboldt Univ, Inst Phys, Newtonstr 15, D-12489 Berlin, Germany

[24] Universit Trieste, Dipartimento Fis, I-34127 Trieste, Italy

[25] BIST, IFAE, Barcelona 08193, Spain

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

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

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

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

[30] Univ Turku, Finnish MAG Consortium, Tuorla Observ, Vaisalantie 20, Piikkio 21500, Finland

[31] Univ Turku, Finnish Ctr Astron, ESO FINCA, Vaisalantie 20, Piikkio 21500, Finland

[32] Univ Oulu, Astron Div, Oulu 90014, Finland

[33] Univ Autonoma Barcelona, Dept Fis, Bellaterra 08193, Spain

[34] Univ Autonoma Barcelona, CERES IEEC, Bellaterra 08193, Spain

[35] Univ Barcelona, ICC, IEEC UB, E-08028 Barcelona, Spain

[36] West Virginia Univ, Dept Phys & Astron, Morgantown, WV 26506 USA

[37] West Virginia Univ, Ctr Gravitat Waves & Cosmol, Chestnut Ridge Res Bldg, Morgantown, WV 26505 USA

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

[39] Univ Bologna, INAF Trieste, Bologna, Italy

[40] Univ Bologna, Dept Phys & Astron, Bologna, Italy

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

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

[43] ASTRON, POB 2, NL-7990 Dwingeloo, Netherlands

来源：

ASTRONOMY & ASTROPHYSICS | 2020年 / 634卷

关键词：

pulsars; individual; Crab pulsar; gamma rays; stars; radio continuum; radiation mechanisms; non-thermal; HIGH-ENERGY EMISSION; VARIABILITY; GAPS;

D O I：

10.1051/0004-6361/201833555

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Aims. The aim of this study is to search for evidence of a common emission engine between radio giant pulses (GPs) and very-high-energy (VHE, E& x2004;> & x2004;100 GeV) gamma-rays from the Crab pulsar. Methods. We performed 16 h of simultaneous observations of the Crab pulsar at 1.4 GHz with the Effelsberg radio telescope and the Westerbork Synthesis Radio Telescope (WSRT), and at energies above 60 GeV we used the Major Atmospheric Gamma-ray Imaging Cherenkov (MAGIC) telescopes. We searched for a statistical correlation between the radio and VHE gamma-ray emission with search windows of different lengths and different time lags to the arrival times of a radio GP. A dedicated search for an enhancement in the number of VHE gamma-rays correlated with the occurrence of radio GPs was carried out separately for the P1 and P2 phase ranges, respectively. Results. In the radio data sample, 99444 radio GPs were detected. We find no significant correlation between the GPs and VHE photons in any of the search windows. Depending on phase cuts and the chosen search windows, we find upper limits at a 95% confidence level on an increase in VHE gamma-ray events correlated with radio GPs between 7% and 61% of the average Crab pulsar VHE flux for the P1 and P2 phase ranges, respectively. This puts upper limits on the flux increase during a radio GP between 12% and 2900% of the pulsed VHE flux, depending on the search window duration and phase cuts. This is the most stringent upper limit on a correlation between gamma-ray emission and radio GPs reported so far.

引用

页数：14

共 67 条

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← 1 2 3 4 5 6 7 →

共 67 条

[1] FERMI LARGE AREA TELESCOPE OBSERVATIONS OF THE CRAB PULSAR AND NEBULA
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.
Blandford, R. D.
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.
Camilo, F.
Caraveo, P. A.
Casandjian, J. M.
Cecchi, C.
Celik, Oe.
Chekhtman, A.
Cheung, C. C.
Chiang, J.
Ciprini, S.
Claus, R.
Cognard, I.
Cohen-Tanugi, J.
Cominsky, L. R.
Conrad, J.
Dermer, C. D.
de Angelis, A.
de Luca, A.
de Palma, F.
Digel, S. W.
Silva, E. do Couto e
Drell, P. S.
Dubois, R.
Dumora, D.
Espinoza, C.
Farnier, C.
Favuzzi, C.
[J]. ASTROPHYSICAL JOURNAL, 2010, 708 (02) : 1254 - 1267
[2] FERMI/LARGE AREA TELESCOPE BRIGHT GAMMA-RAY SOURCE LIST
Abdo, A. A.
Ackermann, M.
Ajello, M.
Atwood, W. B.
Axelsson, M.
Baldini, L.
Ballet, J.
Band, D. L.
Barbiellini, G.
Bastieri, D.
Battelino, M.
Baughman, B. M.
Bechtol, K.
Bellazzini, R.
Berenji, B.
Bignami, G. F.
Blandford, R. D.
Bloom, E. D.
Bonamente, E.
Borgland, A. W.
Bouvier, A.
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.
Charles, E.
Chekhtman, A.
Cheung, C. C.
Chiang, J.
Ciprini, S.
Claus, R.
Cohen-Tanugi, J.
Cominsky, L. R.
Conrad, J.
Corbet, R.
Costamante, L.
Cutini, S.
Davis, D. S.
Dermer, C. D.
de Angelis, A.
de Luca, A.
de Palma, F.
Digel, S. W.
[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2009, 183 (01) : 46 - 66
[3] Introducing the CTA concept
Acharya, B. S.
Actis, M.
Aghajani, T.
Agnetta, G.
Aguilar, J.
Aharonian, F.
Ajello, M.
Akhperjanian, A.
Alcubierre, M.
Aleksic, J.
Alfaro, R.
Aliu, E.
Allafort, A. J.
Allan, D.
Allekotte, I.
Amato, E.
Anderson, J.
Anguener, E. O.
Antonelli, L. A.
Antoranz, P.
Aravantinos, A.
Arlen, T.
Armstrong, T.
Arnaldi, H.
Arrabito, L.
Asano, K.
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