Probing the radio emission from air showers with polarization measurements

被引：90

作者：

Aab, A. ^{[1
,25
]}

Abreu, P. ^{[2
,3
]}

Aglietta, M. ^{[4
,5
]}

Ahlers, M. ^{[6
]}

Ahn, E. J. ^{[7
]}

Albuquerque, I. F. M. ^{[8
]}

Allekotte, I. ^{[9
,10
]}

Allen, J. ^{[11
]}

Allison, P. ^{[12
]}

Almela, A. ^{[13
,14
]}

Castillo, J. Alvarez ^{[15
]}

Alvarez-Muniz, J. ^{[16
]}

Batista, R. Alves ^{[17
]}

Ambrosio, M. ^{[18
,19
]}

Aminaei, A. ^{[20
]}

Anchordoqui, L. ^{[21
]}

Andringa, S. ^{[2
,3
]}

Anticic, T. ^{[22
]}

Aramo, C. ^{[18
,19
]}

Arqueros, F. ^{[23
]}

Asorey, H. ^{[9
,10
]}

Assis, P. ^{[2
,3
]}

Aublin, J. ^{[24
,25
]}

Ave, M. ^{[16
]}

Avenier, M. ^{[26
]}

Avila, G. ^{[27
]}

Badescu, A. M. ^{[28
]}

Barber, K. B. ^{[29
]}

Bardenet, R. ^{[30
]}

Baeuml, J. ^{[31
]}

Baus, C. ^{[32
]}

Beatty, J. J. ^{[33
]}

Becker, K. H. ^{[34
]}

Bellido, J. A. ^{[29
]}

BenZvi, S. ^{[6
]}

Berat, C. ^{[26
]}

Bertou, X. ^{[9
,10
]}

Biermann, P. L. ^{[35
]}

Billoir, P. ^{[24
,25
]}

Blanco, F. ^{[23
]}

Blanco, M. ^{[24
,25
]}

Bleve, C. ^{[34
]}

Bluemer, H. ^{[31
,32
]}

Bohacova, M. ^{[36
]}

Boncioli, D. ^{[37
]}

Bonifazi, C. ^{[38
]}

Bonino, R. ^{[4
,5
]}

Borodai, N. ^{[39
]}

Brack, J. ^{[40
]}

Brancus, I. ^{[41
]}

机构：

[1] Univ Siegen, D-57068 Siegen, Germany

[2] Univ Tecn Lisboa, LIP, P-1100 Lisbon, Portugal

[3] Univ Tecn Lisboa, Inst Super Tecn, P-1096 Lisbon, Portugal

[4] Univ Turin, Osservatorio Astron Torino, INAF, Turin, Italy

[5] Ist Nazl Fis Nucl, I-10125 Turin, Italy

[6] Univ Wisconsin, Madison, WI USA

[7] Fermilab Natl Accelerator Lab, Batavia, IL USA

[8] Univ Sao Paulo, Inst Fis, BR-01498 Sao Paulo, Brazil

[9] Ctr Atom Bariloche, San Carlos De Bariloche, Rio Negro, Argentina

[10] CNEA UNCuyo CONICET, Inst Balseiro, San Carlos De Bariloche, Rio Negro, Argentina

[11] NYU, New York, NY USA

[12] Ohio State Univ, Columbus, OH 43210 USA

[13] Univ Tecnol Nacl, Facultad Reg Buenos Aires, Buenos Aires, DF, Argentina

[14] Inst Tecnol Detecc Astroparticulas, CNEA, CONICET, UNSAM, Buenos Aires, DF, Argentina

[15] Univ Nacl Autonoma Mexico, Mexico City 04510, DF, Mexico

[16] Univ Santiago de Compostela, Santiago De Compostela, A Coruna, Spain

[17] Univ Hamburg, Hamburg, Germany

[18] Univ Naples Federico II, Naples, Italy

[19] Sezione Ist Nazl Fis Nucl, Naples, Italy

[20] Radboud Univ Nijmegen, IMAPP, NL-6525 ED Nijmegen, Netherlands

[21] Univ Wisconsin, Milwaukee, WI 53201 USA

[22] Rudjer Boskovic Inst, Zagreb 10000, Croatia

[23] Univ Complutense Madrid, Madrid, Spain

[24] Univ Paris 06, CNRS IN2P3, LPNHE, Paris, France

[25] Univ Paris 07, CNRS IN2P3, LPNHE, Paris, France

[26] Univ Grenoble 1, CNRS IN2P3, LPSC, Grenoble, France

[27] Nacl Energia Atom, Observat Pierre Auger & Comis, Malargue, Argentina

[28] Univ Politehn Bucuresti, Bucharest, Romania

[29] Univ Adelaide, Adelaide, SA, Australia

[30] Univ Paris 11, CNRS IN2P3, LAL, Orsay, France

[31] Karlsruhe Inst Technol, Inst Kernphys, D-76021 Karlsruhe, Germany

[32] Karlsruhe Inst Technol, Inst Expt Kernphys, D-76021 Karlsruhe, Germany

[33] Ohio State Univ, Columbus, OH 43210 USA

[34] Berg Univ Wuppertal, Wuppertal, Germany

[35] Max Planck Inst Radioastron, D-53121 Bonn, Germany

[36] Acad Sci Czech Republ, Inst Phys, Prague, Czech Republic

[37] Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, Assergi, Italy

[38] Univ Fed Rio de Janeiro, Inst Fis, Rio De Janeiro, Brazil

[39] Inst Nucl Phys PAN, Krakow, Poland

[40] Colorado State Univ, Ft Collins, CO 80523 USA

[41] Horia Hulubei Natl Inst Phys & Nucl Engn, Bucharest, Romania

[42] Colorado State Univ, Pueblo, CO USA

[43] Univ Granada, Granada, Spain

[44] CAFPE, Granada, Spain

[45] Penn State Univ, University Pk, PA 16802 USA

[46] Univ Milan, Milan, Italy

[47] Sezione Ist Nazl Fis Nucl, Milan, Italy

[48] Univ Roma Tor Vergata, I-00173 Rome, Italy

[49] Sezione Ist Nazl Fis Nucl, Rome, Italy

[50] Univ Catania, Catania, Italy

来源：

PHYSICAL REVIEW D | 2014年 / 89卷 / 05期

基金：

英国科学技术设施理事会; 美国国家科学基金会; 巴西圣保罗研究基金会; 澳大利亚研究理事会;

关键词：

MONTE-CARLO SIMULATIONS; DETECTOR; SIGNALS; PULSES; RADIATION; FIELD;

D O I：

10.1103/PhysRevD.89.052002

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The emission of radio waves from air showers has been attributed to the so-called geomagnetic emission process. At frequencies around 50 MHz this process leads to coherent radiation which can be observed with rather simple setups. The direction of the electric field induced by this emission process depends only on the local magnetic field vector and on the incoming direction of the air shower. We report on measurements of the electric field vector where, in addition to this geomagnetic component, another component has been observed that cannot be described by the geomagnetic emission process. The data provide strong evidence that the other electric field component is polarized radially with respect to the shower axis, in agreement with predictions made by Askaryan who described radio emission from particle showers due to a negative charge excess in the front of the shower. Our results are compared to calculations which include the radiation mechanism induced by this charge-excess process.

引用

页数：18

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