Improving the performance of the single-dish Cherenkov telescope MAGIC through the use of signal timing

被引：85

作者：

Aliu, E. ^{[1
]}

Anderhub, H. ^{[2
]}

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

Antoranz, P.

Backes, M. ^{[4
]}

Baixeras, C. ^{[5
]}

Barrio, J. A.

Bartko, H. ^{[6
]}

Bastieri, D. ^{[7
,8
]}

Becker, J. K. ^{[4
]}

Bednarek, W. ^{[9
]}

Berger, K. ^{[10
]}

Bernardini, E. ^{[11
]}

Biland, A. ^{[2
]}

Bock, R. K. ^{[6
]}

Bonnoli, G. ^{[12
,14
]}

Bordas, P. ^{[13
]}

Tridon, D. Borla ^{[6
]}

Bosch-Ramon, V. ^{[13
]}

Bretz, T. ^{[10
]}

Britvitch, I. ^{[2
]}

Camara, M.

Carmona, E. ^{[6
]}

Chilingarian, A. ^{[15
]}

Commichau, S. ^{[2
]}

Contreras, J. L.

Cortina, J. ^{[1
]}

Costado, M. T. ^{[16
,17
]}

Covino, S. ^{[3
]}

Curtef, V. ^{[4
]}

Dazzi, F. ^{[7
,8
]}

De Angelis, A. ^{[18
,19
]}

del Pozo, E. de Cea ^{[20
]}

de los Reyes, R.

De Lotto, B. ^{[18
,19
]}

De Maria, M. ^{[18
,19
]}

De Sabata, F. ^{[18
,19
]}

Mendez, C. Delgado ^{[16
]}

Dominguez, A. ^{[21
]}

Dorner, D. ^{[10
]}

Doro, M. ^{[7
,8
]}

Elsaesser, D. ^{[10
]}

Errando, M. ^{[1
]}

Fagiolini, M. ^{[12
,14
]}

Ferenc, D. ^{[22
]}

Fernandez, E. ^{[1
]}

Firpo, R. ^{[1
]}

Fonseca, M. V.

Font, L. ^{[5
]}

Galante, N.

机构：

[1] IFAE, E-08193 Barcelona, Spain

[2] ETH, CH-8093 Zurich, Switzerland

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

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

[5] Univ Autonoma Barcelona, E-08193 Barcelona, Spain

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

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

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

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

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

[11] DESY Deutsch Elekt Synchrotron, D-15738 Zeuthen, Germany

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

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

[14] Ist Nazl Fis Nucl, I-53100 Siena, Italy

[15] Yerevan Phys Inst, AM-375036 Yerevan, Armenia

[16] Inst Astrofis Canarias, E-38200 San Cristobal la Laguna, Spain

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

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

[19] Ist Nazl Fis Nucl, I-33100 Udine, Italy

[20] CSIC, IEEC, Inst Ciecies Espai, E-08193 Barcelona, Spain

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

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

[23] Turku Univ, Tuorla Observ, FI-21500 Piikkio, Finland

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

[25] Humboldt Univ, D-12489 Berlin, Germany

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

[27] INFM, I-34143 Trieste, Italy

[28] ICREA, E-08010 Barcelona, Spain

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

[30] Ist Nazl Fis Nucl, I-56126 Pisa, Italy

来源：

ASTROPARTICLE PHYSICS | 2009年 / 30卷 / 06期

关键词：

Gamma-ray astronomy; IACT; Cherenkov images; Timing analysis;

D O I：

10.1016/j.astropartphys.2008.10.003

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Cherenkov light flashes produced by extensive air showers are very short in time. A high bandwidth and fast digitizing readout, therefore, can minimize the influence of the background from the light of the night sky, and improve the performance in Cherenkov telescopes. The time structure of the Cherenkov image can further be used in single-dish Cherenkov telescopes as an additional parameter to reduce the background from unwanted hadronic showers. A description of an analysis method which makes use of the time information and the subsequent improvement on the performance of the MAGIC telescope (especially after the upgrade with an ultra fast 2 GSamples/s digitization system in February 2007) will be presented. The use of timing information in the analysis of the new MAGIC data reduces the background by a factor two, which in turn results in an enhancement of about a factor 1.4 of the flux sensitivity to point-like sources, as tested on observations of the Crab Nebula. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：293 / 305

页数：13

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