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20032009
most citedThe structure of suspended graphene sheets

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22 papers · 1 filter

astro-ph200832 cited

Frequency spectra of cosmic ray air shower radio emission measured with LOPES

A. Nigl

AIMS: We wish to study the spectral dependence of the radio emission from cosmic-ray air showers around 100 PeV (1017 eV). METHODS: We observe short radio pulses in a broad frequen…

astro-ph200825 cited

Direction identification in radio images of cosmic-ray air showers detected with LOPES and KASCADE

A. Nigl

AIMS: We want to understand the emission mechanism of radio emission from air showers to determine the origin of high-energy cosmic rays. Therefore, we study the geometry of the ai…

astro-ph200813 cited

VLBI observations of jupiter with the initial test station of LOFAR and the nancay decametric array

A. Nigl, P. Zarka, J. Kuijpers +3

AIMS: To demonstrate and test the capability of the next generation of low-frequency radio telescopes to perform high resolution observations across intra-continental baselines. Ju…

astro-ph20081 cited

Cosmic rays studied with a hybrid high school detector array

A. Nigl, C. Timmermans, P. Schellart +7

The LORUN/NAHSA system is a pathfinder for hybrid cosmic ray research combined with education and outreach in the field of astro-particle physics. Particle detectors and radio ante…

astro-ph200821 cited

Extremely red stellar objects revealed by IPHAS

N. J. Wright, R. Greimel, M. J. Barlow +13

We present photometric analysis and follow-up spectroscopy for a population of extremely red stellar objects extracted from the point-source catalogue of the INT Photometric H-Alph…

astro-ph2008108 cited

Composition of Primary Cosmic-Ray Nuclei at High Energies

M. Ave, P. J. Boyle, F. Gahbauer +5

The TRACER instrument (``Transition Radiation Array for Cosmic Energetic Radiation'') has been developed for direct measurements of the heavier primary cosmic-ray nuclei at high en…