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Ultra-high-energy neutrinos and cosmic rays produce short radio flashes through the Askaryan effect when they impact on the Moon. Earthbound radio telescopes can search the Lunar surface for these signals. A new generation of low-…

The low flux of the ultra-high energy cosmic rays (UHECR) at the highest energies provides a challenge to answer the long standing question about their origin and nature. A significant increase in the number of detected UHECR is expected to…

Various experiments have been conducted to search for the radio emission from ultra-high-energy particles interacting in the lunar regolith. Although they have not yielded any detections, they have been successful in establishing upper…

天体物理仪器与方法 · 物理学 2016-01-13 Justin Bray

When high-energy cosmic rays impinge on a dense dielectric medium, radio waves are produced through the Askaryan effect. We show that at wavelengths comparable to the length of the shower produced by an Ultra-High Energy cosmic ray or…

天体物理学 · 物理学 2013-02-25 O. Scholten , J. Bacelar , R. Braun , A. G. de Bruyn , H. Falcke , B. Stappers , R. G. Strom

We show that at wavelengths comparable to the length of the shower produced by an Ultra-High Energy cosmic ray or neutrino, radio signals are an extremely efficient way to detect these particles. Through an example it is shown that this new…

天体物理学 · 物理学 2013-02-25 O. Scholten , J. Bacelar , R. Braun , A. G. de Bruyn , H. Falcke , B. Stappers , R. G. Strom

We explore the feasibility of using the Moon as a detector of extremely high energy (>10^19 eV) cosmic rays and neutrinos. The idea is to use the existing radiotelescopes on Earth to look for short pulses of Cherenkov radiation in the GHz…

天体物理学 · 物理学 2011-05-12 J. Alvarez-Muñiz , E. Zas

Cosmic particles hitting Earth's moon produce radio emission via the Askaryan effect. If the resulting radio ns-pulse can be detected by radio telescopes, this technique potentially increases the available collective area for ZeV scale…

We discuss the possibilities of measuring ultra-high energy cosmic rays and neutrinos with radio techniques. We review a few of the properties of radio emission from cosmic ray air showers and show how these properties can be explained by…

天体物理学 · 物理学 2011-04-20 Heino Falcke , Peter Gorham

The Moon provides a huge effective detector volume for ultrahigh energy cosmic neutrinos, which generate coherent radio pulses in the lunar surface layer due to the Askaryan effect. In light of presently considered lunar missions, we…

天体物理学 · 物理学 2008-11-26 O. Stål , J. E. S. Bergman , B. Thidé , L. K. S. Daldorff , G. Ingelman

Low frequency radio waves, while challenging to observe, are a rich source of information about pulsars. The LOw Frequency ARray (LOFAR) is a new radio interferometer operating in the lowest 4 octaves of the ionospheric "radio window":…

The low flux of the ultra-high energy cosmic rays (UHECR) at the highest energies provides a challenge to answer the long standing question about their origin and nature. Even lower fluxes of neutrinos with energies above $10^{22}$ eV are…

LOFAR (Low Frequency Array) is an innovative radio telescope optimized for the frequency range 30-240 MHz. The telescope is realized as a phased aperture array without any moving parts. Digital beam forming allows the telescope to point to…

We analyze the prospects for testing the cosmic neutrino background and its interpretation as source of Neutrino Dark Energy with the radio telescope LOFAR.

天体物理学 · 物理学 2007-05-23 Lily Schrempp

Air showers from cosmic rays emit short, intense radio pulses. LOFAR is a new radio telescope, that is being built in the Netherlands and Europe. Designed primarily as a radio interferometer, the core of LOFAR will have a high density of…

天体物理仪器与方法 · 物理学 2014-11-18 A. Horneffer , L. Bähren , S. Buitink , H. Falcke , J. R. Hörandel , J. Kuijpers , S. Lafebre , A. Nigl , O. Scholten , K. Singh

Radio detection of Ultra High Energetic Cosmic Rays and Neutrinos (UHECRv) which hit the Moon has been investigated in recent years. In preparation for near-future lunar science missions, we discuss technical requirements for radio…

天体物理仪器与方法 · 物理学 2018-10-17 Amin Aminaei , Linjie Chen , Hamid R. Pourshaghaghi , Stijn Buitink , Marc Klein-Wolt , Leon V. E. Koopmans , Heino Falcke

Neutrinos interact with matter only through weak processes with low cross-section. To detect cosmic neutrinos most efforts have relied on the detection of visible Vavilov-Cerenkov light in detectors embedded in the target volumes. To access…

天体物理学 · 物理学 2007-05-23 Oscar Stål , Jan Bergman , Bo Thidé , Lennart Åhlén , Gunnar Ingelman

The low frequency array (LOFAR), is the first radio telescope designed with the capability to measure radio emission from cosmic-ray induced air showers in parallel with interferometric observations. In the first $\sim 2\,\mathrm{years}$ of…

天体物理仪器与方法 · 物理学 2014-06-27 P. Schellart , A. Nelles , S. Buitink , A. Corstanje , J. E. Enriquez , H. Falcke , W. Frieswijk , J. R. Hörandel , A. Horneffer , C. W. James , M. Krause , M. Mevius , O. Scholten , S. ter Veen , S. Thoudam , M. van den Akker , A. Alexov , J. Anderson , I. M. Avruch , L. Bähren , R. Beck , M. E. Bell , P. Bennema , M. J. Bentum , G. Bernardi , P. Best , J. Bregman , F. Breitling , M. Brentjens , J. Broderick , M. Brüggen , B. Ciardi , A. Coolen , F. de Gasperin , E. de Geus , A. de Jong , M. de Vos , S. Duscha , J. Eislöffel , R. A. Fallows , C. Ferrari , M. A. Garrett , J. Grießmeier , T. Grit , J. P. Hamaker , T. E. Hassall , G. Heald , J. W. T. Hessels , M. Hoeft , H. A. Holties , M. Iacobelli , E. Juette , A. Karastergiou , W. Klijn , J. Kohler , V. I. Kondratiev , M. Kramer , M. Kuniyoshi , G. Kuper , P. Maat , G. Macario , G. Mann , S. Markoff , D. McKay-Bukowski , J. P. McKean , J. C. A. Miller-Jones , J. D. Mol , D. D. Mulcahy , H. Munk , R. Nijboer , M. J. Norden , E. Orru , R. Overeem , H. Paas , M. Pandey-Pommier , R. Pizzo , A. G. Polatidis , A. Renting , J. W. Romein , H. Röttgering , A. Schoenmakers , D. Schwarz , J. Sluman , O. Smirnov , C. Sobey , B. W. Stappers , M. Steinmetz , J. Swinbank , Y. Tang , C. Tasse , C. Toribio , J. van Leeuwen , R. van Nieuwpoort , R. J. van Weeren , N. Vermaas , R. Vermeulen , C. Vocks , C. Vogt , R. A. M. J. Wijers , S. J. Wijnholds , M. W. Wise , O. Wucknitz , S. Yatawatta , P. Zarka , A. Zensus

The LOw Frequency Array, LOFAR, is a next generation radio telescope with its core in the Netherlands and elements distributed throughout Europe. It has exceptional collecting area and wide bandwidths at frequencies from 10 MHz up to 250…

高能天体物理现象 · 物理学 2015-06-11 Vladislav Kondratiev , Ben Stappers , the LOFAR Pulsar Working Group

LOFAR, the "low-frequency array", will be one of the first in a new generation of radio telescopes and Square Kilometer Array (SKA) pathfinders that are highly flexible in capability because they are largely software driven. LOFAR will not…

天体物理仪器与方法 · 物理学 2009-03-10 J. W. T. Hessels , B. W. Stappers , J. van Leeuwen , LOFAR Transients Key Science Project

LOFAR (the Low Frequency Array), a distributed digital radio telescope with stations in the Netherlands, Germany, France, Sweden, and the United Kingdom, is designed to enable full-sky monitoring of transient radio sources. These…

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