LOPES detecting radio emission from cosmic ray air showers

被引：19

作者：

Horneffer, A ^{[1
]}

Antoni, T ^{[1
]}

Apel, WD ^{[1
]}

Badea, F ^{[1
]}

Bekk, K ^{[1
]}

Bercuci, A ^{[1
]}

Bertaina, M ^{[1
]}

Blümer, H ^{[1
]}

Bozdog, H ^{[1
]}

Brancus, IM ^{[1
]}

Brüggemann, M ^{[1
]}

Buchholz, P ^{[1
]}

Büttner, C ^{[1
]}

Chiavassa, A ^{[1
]}

Daumiller, K ^{[1
]}

de Vos, CM ^{[1
]}

Doll, P ^{[1
]}

Engel, R ^{[1
]}

Engler, J ^{[1
]}

Falcke, H ^{[1
]}

Fessler, F ^{[1
]}

Ghia, PL ^{[1
]}

Gils, HJ ^{[1
]}

Glasstetter, R ^{[1
]}

Haungs, A ^{[1
]}

Heck, D ^{[1
]}

Hörandel, JR ^{[1
]}

Huege, T ^{[1
]}

Kampert, KH ^{[1
]}

Kant, GW ^{[1
]}

Klages, HO ^{[1
]}

Kolotaev, Y ^{[1
]}

Maier, G ^{[1
]}

Mathes, HJ ^{[1
]}

Mayer, HJ ^{[1
]}

Milke, J ^{[1
]}

Morello, C ^{[1
]}

Müller, M ^{[1
]}

Navarra, G ^{[1
]}

Obenland, R ^{[1
]}

Oehlschläger, J ^{[1
]}

Ostapchenko, S ^{[1
]}

Petcu, M ^{[1
]}

Plewnia, S ^{[1
]}

Rebel, H ^{[1
]}

Risse, A ^{[1
]}

Roth, M ^{[1
]}

Schieler, H ^{[1
]}

Scholz, J ^{[1
]}

Stümpert, M ^{[1
]}

机构：

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

来源：

GRAVITATIONAL WAVE AND PARTICLE ASTROPHYSICS DETECTORS | 2004年 / 5500卷

关键词：

cosmic rays; radio; EAS; LOFAR; LOPES;

D O I：

10.1117/12.551466

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Radio pulses emitted in the Atmosphere during the air shower development of high-energy primary cosmic rays were measured during the late 1960ies in the frequency range from 2 MHz to 520 MHz. Mainly due to difficulties with radio interference these measurements ceased in the late 1970ies. LOFAR (Low Frequency Array) is a new digital radio interferometer under development. Using high bandwidth ADCs and fast data processing it will be able to filter out most of the interference. By storing the whole waveform information in digital form one can analyze transient events like air showers even after they have been recorded. To test this new technology and to demonstrate its ability to measure air showers a "LOFAR Prototype Station" (LOPES) is set up to operate in conjunction with an existing air shower array (KASCADE-Grande). The first phase consisting of 10 antennas is already running. It operates in the frequency range of 40 to 80 MHz, using simple short dipole antennas and direct 2nd Nyquist sampling of the incoming wave. It has proven to be able to do simple astronomical measurements, like imaging of a solar burst. It has also demonstrated how digital interference suppression and beamforming can overcome the problem of radio interference and pick out air shower events.

引用

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页码：129 / 138

页数：10

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