Results for "T. Huege"

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Radio detection of cosmic rays with the Auger Engineering Radio ArrayMay 13 2019The Auger Engineering Radio Array (AERA) complements the Pierre Auger Observatory with 150 radio-antenna stations measuring in the frequency range from 30 to 80 MHz. With an instrumented area of 17 km$^2$, the array constitutes the largest cosmic-ray ... More
Radio detection of extensive air showersJan 11 2017Radio detection of extensive air showers initiated in the Earth's atmosphere has made tremendous progress in the last decade. Today, radio detection is routinely used in several cosmic-ray observatories. The physics of the radio emission in air showers ... More
Radiowave Detection of Ultra-High Energy Neutrinos and Cosmic RaysJan 11 2017Radio waves, perhaps because they are uniquely transparent in our terrestrial atmosphere, as well as the cosmos beyond, or perhaps because they are macroscopic, so the basic instruments of detection (antennas) are easily constructable, arguably occupy ... More
REAS2: CORSIKA-based Monte Carlo simulations of geosynchrotron radio emissionJul 25 2007Simulations of geosynchrotron radio emission from extensive air showers performed with the Monte Carlo code REAS1 used analytical parameterisations to describe the spatial, temporal, energy and angular particle distributions in air showers. The successor ... More
Simulating radio emission from air showers with CoREASJan 10 2013CoREAS is a Monte Carlo code for the simulation of radio emission from extensive air showers. It implements the endpoint formalism for the calculation of electromagnetic radiation directly in CORSIKA. As such, it is parameter-free, makes no assumptions ... More
Dependence of geosynchrotron radio emission on the energy and depth of maximum of cosmic ray showersJun 06 2008Jul 17 2008Based on CORSIKA and REAS2 simulations, we investigate the dependence of geosynchrotron radio emission from extensive air showers on the energy of the primary cosmic ray and the depth of the shower maximum. It is found that at a characteristic lateral ... More
Monte Carlo simulations of geosynchrotron radio emission from CORSIKA-simulated air showersNov 23 2006Jan 29 2007We present simulations performed with REAS2, a new Monte Carlo code for the calculation of geosynchrotron radio emission from extensive air showers. The code uses thoroughly tested time-domain radio emission routines in conjunction with a realistic air ... More
Energy and composition sensitivity of geosynchrotron radio emission from EASJul 25 2007We analyse the sensitivity of geosynchrotron radio emission from inclined extensive air showers to the energy and mass of primary cosmic rays. We demonstrate that radio emission measurements at suitable lateral distances can infer both the number of electrons ... More
Geosynchrotron radio emission from CORSIKA-simulated air showersSep 29 2006Simulations of radio emission from extensive air showers we have published so far were performed with a Monte Carlo code using analytical parametrisations to describe the spatial, temporal, energy and angular particle distributions in the air shower. ... More
Search for PeVatrons at the Galactic Center using a radio air-shower array at the South PoleDec 25 2017The South Pole, which hosts the IceCube Neutrino Observatory, has a complete and around-the-clock exposure to the Galactic Center. Hence, it is an ideal location to search for gamma rays of PeV energy coming from the Galactic Center. However, it is hard ... More
Radio Detection of Neutrinos from Behind a MountainAug 28 2007We explore the sensitivity of a neutrino detector employing strongly directional high gain radio antennae to detect the conversion of neutrinos above $10^{16}$ eV in a mountain or the earth crust. The directionality of the antennae will allow both, the ... More
Search for PeVatrons at the Galactic Center using a radio air-shower array at the South PoleDec 25 2017Dec 21 2018The South Pole, which hosts the IceCube Neutrino Observatory, has a complete and around-the-clock exposure to the Galactic Center. Hence, it is an ideal location to search for gamma rays of PeV energy coming from the Galactic Center. However, it is hard ... More
Prospects for determining air shower characteristics through geosynchrotron emission arrival timesApr 05 2010Using simulations of geosynchrotron radiation from extensive air showers, we present a relation between the shape of the geosynchrotron radiation front and the distance of the observer to the maximum of the air shower. By analyzing the relative arrival ... More
Simulation of radio emission from air showers in atmospheric electric fieldsFeb 25 2010We study the effect of atmospheric electric fields on the radio pulse emitted by cosmic ray air showers. Under fair weather conditions the dominant part of the radio emission is driven by the geomagnetic field. When the shower charges are accelerated ... More
Monte Carlo simulations of air showers in atmospheric electric fieldsOct 28 2009The development of cosmic ray air showers can be influenced by atmospheric electric fields. Under fair weather conditions these fields are small, but the strong fields inside thunderstorms can have a significant effect on the electromagnetic component ... More
Calibration of the LOFAR low-band antennas using the Galaxy and a model of the signal chainMar 14 2019The LOw-Frequency ARray (LOFAR) is used to make precise measurements of radio emission from extensive air showers, yielding information about the primary cosmic ray. Interpreting the measured data requires an absolute and frequency-dependent calibration ... More
A radio air shower surface detector as an extension for IceCube and IceTopAug 24 2007The IceCube neutrino detector is built into the Antarctic ice sheet at the South Pole to measure high energy neutrinos. For this, 4800 photomultiplier tubes (PMTs) are being deployed at depths between 1450 and 2450 meters into the ice to measure neutrino ... More
Radio Detection of Cosmic Rays -- Achievements and Future PotentialApr 18 2017When modern efforts for radio detection of cosmic rays started about a decade ago, hopes were high but the true potential was unknown. Since then, we have achieved a detailed understanding of the radio emission physics and have consequently succeeded ... More
The renaissance of radio detection of cosmic raysOct 25 2013Nearly 50 years ago, the first radio signals from cosmic ray air showers were detected. After many successful studies, however, research ceased not even 10 years later. Only a decade ago, the field was revived with the application of powerful digital ... More
Universality of electron-positron distributions in extensive air showersFeb 03 2009Using a large set of simulated extensive air showers, we investigate universality features of electron and positron distributions in very-high-energy cosmic-ray air showers. Most particle distributions depend only on the depth of the shower maximum and ... More
Radio-Emission from Cosmic Ray Air-Showers - A Theoretical Perspective for LOPESJul 30 2002High-energy cosmic ray air-showers have been known for over 30 years to emit strong radio pulses in the regime between a few and several 100 MHz (Allan 1971). To date, however, a thorough analysis of the emission mechanisms has not yet been conducted. ... More
Monte Carlo simulations of radio emission from cosmic ray air showersOct 17 2005As a basis for the interpretation of data gathered by LOPES and other experiments, we have carried out Monte Carlo simulations of geosynchrotron radio emission from cosmic ray air showers. The simulations, having been verified carefully with analytical ... More
Radio emission from cosmic ray air showers: simulation results and parametrizationJan 26 2005Oct 17 2005We have developed a sophisticated model of the radio emission from extensive air showers in the scheme of coherent geosynchrotron radiation, providing a theoretical foundation for the interpretation of experimental data from current and future experiments. ... More
Simulations of Radio Emission from Cosmic Ray Air ShowersOct 28 2004Radio emission from cosmic ray air showers has the potential to become an additional, cost-effective observing technique for cosmic ray research, being largely complementary to the well-established particle detector and air fluorescence techniques. We ... More
Radio emission from cosmic ray air showers: Monte Carlo simulationsSep 09 2004Oct 14 2004We present time-domain Monte Carlo simulations of radio emission from cosmic ray air showers in the scheme of coherent geosynchrotron radiation. Our model takes into account the important air shower characteristics such as the lateral and longitudinal ... More
Radio Emission from Cosmic Ray Air Showers: Coherent Geosynchrotron RadiationSep 23 2003Cosmic ray air showers have been known for over 30 years to emit pulsed radio emission in the frequency range from a few to a few hundred MHz, an effect that offers great opportunities for the study of extensive air showers with upcoming fully digital ... More
REAS3: A revised implementation of the geosynchrotron model for radio emission from air showersSep 10 2010Over the past years, the freely available Monte Carlo-code REAS which simulates radio emission from air showers based on the geosynchrotron model, was used regularly for comparisons with data. However, it emerged that in the previous version of the code, ... More
REAS3: Monte Carlo simulations of radio emission from cosmic ray air showers using an "end-point" formalismOct 26 2010In recent years, the freely available Monte Carlo code REAS for modelling radio emission from cosmic ray air showers has evolved to include the full complexity of air shower physics. However, it turned out that in REAS2 and all other time-domain models ... More
Simulations and parametrisation of radio emission from cosmic ray air showersJul 01 2005Cosmic ray air showers are known to emit pulsed radio emission at frequencies around a few tens of MHz. Accompanying the experimental efforts of the LOPES project, situated at the KASCADE-Grande site of the Forschungszentrum Karlsruhe, we have modeled ... More
Radio Emission From EAS - Coherent Geosynchrotron RadiationMay 19 2003Extensive air showers (EAS) have been known for over 30 years to emit pulses of radio emission at frequencies from a few to a few hundred MHz, an effect that offers great opportunities for the study of EAS with the next generation of "software radio interferometers" ... More
New method for the time calibration of an interferometric radio antenna arrayFeb 19 2010Feb 25 2010Digital radio antenna arrays, like LOPES (LOFAR PrototypE Station), detect high-energy cosmic rays via the radio emission from atmospheric extensive air showers. LOPES is an array of dipole antennas placed within and triggered by the KASCADE-Grande experiment ... More
Amplitude calibration of a digital radio antenna array for measuring cosmic ray air showersFeb 28 2008Radio pulses are emitted during the development of air showers, where air showers are generated by ultra-high energy cosmic rays entering the Earth's atmosphere. These nanosecond short pulses are presently investigated by various experiments for the purpose ... More
Full Monte Carlo simulations of radio emission from extensive air showers with CoREASJul 29 2013CoREAS is a Monte Carlo simulation code for the calculation of radio emission from extensive air showers. It is based on the "endpoint formalism" for radiation from moving charges implemented directly in CORSIKA. Consequently, the full complexity of the ... More
Precision measurements of cosmic ray air showers with the SKAAug 22 2014Jan 08 2015Supplemented with suitable buffering techniques, the low-frequency part of the SKA can be used as an ultra-precise detector for cosmic-ray air showers at very high energies. This would enable a wealth of scientific applications: the physics of the transition ... More
Initial simulation study on high-precision radio measurements of the depth of shower maximum with SKA1-lowFeb 01 2017As LOFAR has shown, using a dense array of radio antennas for detecting extensive air showers initiated by cosmic rays in the Earth's atmosphere makes it possible to measure the depth of shower maximum for individual showers with a statistical uncertainty ... More
A method for high precision reconstruction of air shower Xmax using two-dimensional radio intensity profilesAug 29 2014Sep 01 2014The mass composition of cosmic rays contains important clues about their origin. Accurate measurements are needed to resolve long-standing issues such as the transition from Galactic to extragalactic origin, and the nature of the cutoff observed at the ... More
Investigation of the radio wavefront of air showers with LOPES measurements and CoREAS simulations (ARENA 2014)Jul 28 2015We investigated the radio wavefront of cosmic-ray air showers with LOPES measurements and CoREAS simulations: the wavefront is of approximately hyperbolic shape and its steepness is sensitive to the shower maximum. For this study we used 316 events with ... More
Improved absolute calibration of LOPES measurements and its impact on the comparison with REAS 3.11 and CoREAS simulationsJul 27 2015Dec 18 2015LOPES was a digital antenna array detecting the radio emission of cosmic-ray air showers. The calibration of the absolute amplitude scale of the measurements was done using an external, commercial reference source, which emits a frequency comb with defined ... More
Reconstruction of the energy and depth of maximum of cosmic-ray air-showers from LOPES radio measurementsAug 11 2014LOPES is a digital radio interferometer located at Karlsruhe Institute of Technology (KIT), Germany, which measures radio emission from extensive air showers at MHz frequencies in coincidence with KASCADE-Grande. In this article, we explore a method (slope ... More
Comparing LOPES measurements of air-shower radio emission with REAS 3.11 and CoREAS simulationsSep 19 2013Dec 18 2015Cosmic ray air showers emit radio pulses at MHz frequencies, which can be measured with radio antenna arrays - like LOPES at the Karlsruhe Institute of Technology in Germany. To improve the understanding of the radio emission, we test theoretical descriptions ... More
Vectorial Radio Interferometry with LOPES 3DAug 12 2013One successful detection technique for high-energy cosmic rays is based on the radio signal emitted by the charged particles in an air shower. The LOPES experiment at Karlsruhe Institute of Technology, Germany, has made major contributions to the evolution ... More
LOPES 3D - vectorial measurements of radio emission from cosmic ray induced air showersMar 28 2013LOPES 3D is able to measure all three components of the electric field vector of the radio emission from air showers. This allows a better comparison with emission models. The measurement of the vertical component increases the sensitivity to inclined ... More
Sensitivity of KASCADE-Grande data to hadronic interaction modelsSep 24 2010KASCADE-Grande is a large detector array dedicated for studies of high-energy cosmic rays in the primary energy range from 100 TeV to 1 EeV. The multi-detector concept of the experimental set-up offers the possibility to measure simultaneously various ... More
Cosmic Ray Measurements with the KASCADE-Grande ExperimentJun 21 200914 KASCADE-Grande reports submitted to the 31st International Cosmic Ray Conference, Lodz, Poland, July 2009
KASCADE-Grande Limits on the Isotropic Diffuse Gamma-Ray Flux between 100 TeV and 1 EeVOct 08 2017KASCADE and KASCADE-Grande were multi-detector installations to measure individual air showers of cosmic rays at ultra-high energy. Based on data sets measured by KASCADE and KASCADE-Grande, 90% C.L. upper limits to the flux of gamma-rays in the primary ... More
Comparison of LOPES data and CoREAS simulations using a full detector simulation (ICRC2013)Aug 12 2013The LOPES experiment at the Karlsruhe Institute of Technology, Germany, has been measuring radio emission of air showers for almost 10 years. For a better understanding of the emission process a detailed comparison of data with simulations is necessary. ... More
Longitudinal EAS-Development Studies in the Air-Shower Experiment KASCADE-GrandeOct 13 2010A large area (128 m^2) Muon Tracking Detector (MTD), located within the KASCADE experiment, has been built with the aim to identify muons (E_mu > 0.8 GeV) and their directions in extensive air showers by track measurements under more than 18 r.l. shielding. ... More
Investigation on the energy and mass composition of cosmic rays using LOPES radio dataSep 10 2013The sensitivity to the mass composition as well as the reconstruction of the energy of the primary particle are explored here by leveraging the features of the radio lateral distribution function. For the purpose of this analysis, a set of events measured ... More
Mass sensitivity in the radio lateral distribution functionJul 31 2013Measuring the mass composition of ultra-high energy cosmic rays is one of the main tasks in the cosmic rays field. Here we are exploring the composition signature in the coherent electromagnetic emission from extensive air showers, detected in the MHz ... More
Ankle-like Feature in the Energy Spectrum of Light Elements of Cosmic Rays Observed with KASCADE-GrandeApr 26 2013Recent results of the KASCADE-Grande experiment provided evidence for a mild knee-like structure in the all-particle spectrum of cosmic rays at $E = 10^{16.92 \pm 0.10} \, \mathrm{eV}$, which was found to be due to a steepening in the flux of heavy primary ... More
Energy spectra of KASCADE-Grande based on shower size measurements and different hadronic interaction modelsSep 17 2013KASCADE-Grande is dedicated for investigations of cosmic-ray air showers in the primary energy range from 10 PeV to 1 EeV. The multi-detector system allows us to reconstruct charged particles, electron and muon numbers for individual air showers with ... More
Study of the muon content of very high-energy EAS measured with the KASCADE-Grande observatoryAug 14 2013The KASCADE-Grande detector is an air-shower array devoted to the study of primary cosmic rays with very high-energies (E = 10^{16} - 10^{18} eV). The instrument is composed of different particle detector systems suitable for the detailed study of the ... More
High-energy cosmic rays measured with KASCADE-GrandeAug 07 2013The detection of high-energy cosmic rays above a few hundred TeV is realized by the observation of extensive air-showers. By using the multi-detector setup of KASCADE-Grande, energy spectrum, elemental composition, and anisotropies of high-energy cosmic ... More
Towards a fast and precise forward model for air shower radio simulationAug 08 2017The radio detection method for cosmic rays relies on coherent emission from electrons and positrons which is beamed in a narrow cone along the shower axis. Currently the only mod- els to reproduce this emission with sufficient accuracy are Monte Carlo ... More
A Rotationally Symmetric Lateral Distribution Function for Radio Emission from Inclined Air ShowersAug 02 2018Oct 31 2018Radio detection of inclined air showers is currently receiving great attention. To exploit the potential, a suitable event reconstruction needs to be developed. The first step in this direction is the development of a model for the lateral distribution ... More
Nanosecond-level time synchronization of AERA using a beacon reference transmitter and commercial airplanesSep 02 2016Radio detection of cosmic-ray air showers requires time synchronization of detectors on a nanosecond level, especially for advanced reconstruction algorithms based on the wavefront curvature and for interferometric analysis approaches. At the Auger Engineering ... More
The lunar Askaryan technique: a technical roadmapSep 17 2015The lunar Askaryan technique, which involves searching for Askaryan radio pulses from particle cascades in the outer layers of the Moon, is a method for using the lunar surface as an extremely large detector of ultra-high-energy particles. The high time ... More
Lunar detection of ultra-high-energy cosmic rays and neutrinos with the Square Kilometre ArrayAug 26 2014Dec 19 2014The origin of the most energetic particles in nature, the ultra-high-energy (UHE) cosmic rays, is still a mystery. Only the most energetic of these have sufficiently small angular deflections to be used for directional studies, and their flux is so low ... More
High-precision measurements of extensive air showers with the SKAAug 14 2015As of 2023, the Square Kilometre Array will constitute the world's largest radio telescope, offering unprecedented capabilities for a diverse science programme in radio astronomy. At the same time, the SKA will be ideally suited to detect extensive air ... More
General description of electromagnetic radiation processes based on instantaneous charge acceleration in `endpoints'Jul 23 2010Oct 14 2011We present a new methodology for calculating the electromagnetic radiation from accelerated charged particles. Our formulation --- the `endpoint formulation' --- combines numerous results developed in the literature in relation to radiation arising from ... More
A detailed comparison of REAS3 and MGMR simulations for radio emission from EASFeb 15 2012In the last years, several models and simulations calculating the radio emission from cosmic ray air showers have been developed. However, a number of those made conflicting predictions on the pulse shapes and the amplitudes of the radio signal. In the ... More
The convergence of EAS radio emission models and a detailed comparison of REAS3 and MGMR simulationsSep 02 2010Sep 03 2010Over the previous decade, many approaches for the modelling of radio emission from cosmic ray air showers have been developed. However, there remained significant deviations between the models, reaching from important qualitative differences such as unipolar ... More
The endpoint formalism for the calculation of electromagnetic radiation and its applications in astroparticle physicsDec 09 2011We present the "endpoint" formalism for the calculation of electromagnetic radiation and illustrate its applications in astroparticle physics. We use the formalism to explain why the coherent radiation from the Askaryan effect is not in general Cherenkov ... More
Imporoving reconstrucion methods for radio measurements with Tunka-RexJan 18 2017Feb 09 2017Tunka-Rex is detector for radio emission produced by cosmic-ray air-showers located in Siberia, triggered by Tunka-133, a co-located air-Cherenkov detector during night, and by a scintillator array Tunka-Grande during day. Tunka-Rex demonstrates that ... More
Detector efficiency and exposure of Tunka-Rex for cosmic-ray air showersDec 04 2017Tunka-Rex (Tunka Radio Extension) is an antenna array for cosmic-ray detection located in Siberia. Previous studies of cosmic rays with Tunka-Rex have shown high precision in determining the energy of the primary particle and the possibility to reconstruct ... More
Reconstruction of cosmic ray air showers with Tunka-Rex data using template fitting of radio pulsesMar 19 2018Jul 02 2018We present an improved method for the precise reconstruction of cosmic ray air showers above $10^{17}$ eV with sparse radio arrays. The method is based on the comparison of predictions for radio pulse shapes by CoREAS simulations to measured pulses. We ... More
Current Status and New Challenges of The Tunka Radio ExtensionDec 17 2018Jan 17 2019The Tunka Radio Extension (Tunka-Rex) is an antenna array spread over an area of about 1~km$^2$. The array is placed at the Tunka Advanced Instrument for cosmic rays and Gamma Astronomy (TAIGA) and detects the radio emission of air showers in the band ... More
Modelling uncertainty of the radiation energy emitted by extensive air showersAug 16 2017Recently, the energy determination of extensive air showers using radio emission has been shown to be both precise and accurate. In particular, radio detection offers the opportunity for an independent measurement of the absolute energy of cosmic rays, ... More
The Tunka Radio Extension, an antenna array for high-energy cosmic-ray detectionJan 17 2017This article presents the first results of the combined measurements of Tunka-Rex and Tunka-Grande as well as studies of the antenna alignment effect and an overview of the recent Tunka-Rex results.
A comparison of the cosmic-ray energy scales of Tunka-133 and KASCADE-Grande via their radio extensions Tunka-Rex and LOPESOct 26 2016Oct 27 2016The radio technique is a promising method for detection of cosmic-ray air showers of energies around $100\,$PeV and higher with an array of radio antennas. Since the amplitude of the radio signal can be measured absolutely and increases with the shower ... More
Latest results of the Tunka Radio Extension (ISVHECRI2016)Jan 25 2017The Tunka Radio Extension (Tunka-Rex) is an antenna array consisting of 63 antennas at the location of the TAIGA facility (Tunka Advanced Instrument for cosmic ray physics and Gamma Astronomy) in Eastern Siberia, nearby Lake Baikal. Tunka-Rex is triggered ... More
Improved measurements of the energy and shower maximum of cosmic rays with Tunka-RexNov 29 2017The Tunka Radio Extension (Tunka-Rex) is an array of 63 antennas located in the Tunka Valley, Siberia. It detects radio pulses in the 30-80 MHz band produced during the air-shower development. As shown by Tunka-Rex, a sparse radio array with about 200 ... More
Accelerator measurements of magnetically-induced radio emission from particle cascades with applications to cosmic-ray air showersJul 27 2015Apr 22 2016For fifty years, cosmic-ray air showers have been detected by their radio emission. We present the first laboratory measurements that validate electrodynamics simulations used in air shower modeling. An experiment at SLAC provides a beam test of radio-frequency ... More
Signal recognition and background suppression by matched filters and neural networks for Tunka-RexDec 08 2018The Tunka Radio Extension (Tunka-Rex) is a digital antenna array, which measures the radio emission of the cosmic-ray air-showers in the frequency band of 30-80 MHz. Tunka-Rex is co-located with TAIGA experiment in Siberia and consists of 63 antennas, ... More
Present status and prospects of the Tunka Radio ExtensionDec 07 2018The Tunka Radio Extension (Tunka-Rex) is a digital radio array operating in the frequency band of 30-80 MHz and detecting radio emission from air-showers produced by cosmic rays with energies above 100 PeV. The experiment is installed at the site of the ... More
Determination of the absolute energy scale of extensive air showers via radio emission: systematic uncertainty of underlying first-principle calculationsDec 20 2017Jul 17 2018Recently, the energy determination of extensive air showers using radio emission has been shown to be both precise and accurate. In particular, radio detection offers the opportunity for an independent measurement of the absolute energy scale of cosmic ... More
First analysis of inclined air showers detected by Tunka-RexDec 10 2018The Tunka Radio Extension (Tunka-Rex) is a digital antenna array for the detection of radio emission from cosmic-ray air showers in the frequency band of 30 to 80 MHz and for primary energies above 100 PeV. The standard analysis of Tunka-Rex includes ... More
The Tunka-Rex Experiment for the Detection of the Air-Shower Radio EmissionNov 29 2016The Tunka-Rex experiment (Tunka Radio Extension) has been deployed in 2012 at the Tunka Valley (Republic of Buryatia, Russia). Its purpose is to investigate methods for the energy spectrum and the mass composition of high-energy cosmic rays based on the ... More
Towards a cosmic-ray mass-composition study at Tunka Radio Extension (ARENA 2016)Nov 28 2016The Tunka Radio Extension (Tunka-Rex) is a radio detector at the TAIGA facility located in Siberia nearby the southern tip of Lake Baikal. Tunka-Rex measures air-showers induced by high-energy cosmic rays, in particular, the lateral distribution of the ... More
The Tunka-Rex Experiment for the Detection of the Air-Shower Radio Emission (ARENA 2014)Nov 29 2016Feb 01 2017The Tunka-Rex experiment (Tunka Radio Extension) has been deployed in 2012 at the Tunka Valley (Republic of Buryatia, Russia). Its purpose is to investigate methods for the energy spectrum and the mass composition of high-energy cosmic rays based on the ... More
The Tunka-Rex antenna station (ICRC 2013)Aug 05 2013Tunka-Rex is the radio extension of Tunka-133, a 1 km^2 air-Cherenkov Detector for air showers in Siberia. Tunka-Rex began operation on October 8th 2012 with 20 radio antennas. Its main goals are to explore the possible precision of the radio detection ... More
The Tunka Radio Extension (Tunka-Rex): Status and First Results (ICRC 2013)Aug 05 2013Tunka-Rex is a new radio antenna array which extends the Tunka experiment in Siberia close to lake Baikal. It consists of 20 antennas on an area of 1 km^2 which measure the radio emission of high-energy air showers. Tunka-Rex is triggered by the photomultiplier ... More
Radio measurements of the energy and the depth of the shower maximum of cosmic-ray air showers by Tunka-RexSep 18 2015Jan 08 2016We reconstructed the energy and the position of the shower maximum of air showers with energies $E \gtrsim 100 $PeV applying a method using radio measurements performed with Tunka-Rex. An event-to-event comparison to air-Cherenkov measurements of the ... More
Radar reflection off extensive air showersOct 04 2012We investigate the possibility of detecting extensive air showers by the radar technique. Considering a bistatic radar system and different shower geometries, we simulate reflection of radio waves off the static plasma produced by the shower in the air. ... More
Tunka-Rex: energy reconstruction with a single antenna station (ARENA 2016)Nov 29 2016The Tunka-Radio extension (Tunka-Rex) is a radio detector for air showers in Siberia. From 2012 to 2014 on, Tunka-Rex operated exclusively together with its host experiment, the air-Cherenkov array Tunka-133, which provided trigger, data acquisition, ... More
Tunka-Rex: Status, Plans, and Recent Results (ARENA 2016)Nov 29 2016Tunka-Rex, the Tunka Radio extension at the TAIGA facility (Tunka Advanced Instrument for cosmic ray physics and Gamma Astronomy) in Siberia, has recently been expanded to a total number 63 SALLA antennas, most of them distributed on an area of one square ... More
The Tunka Radio Extension: reconstruction of energy and shower maximum of the first year data (ICRC 2015)Aug 25 2015Sep 04 2015Since its commissioning in autumn 2012, Tunka-Rex, the radio extension of the air-Cherenkov detector Tunka-133, performed three years of air shower measurements. Currently the detector consists of 44 antennas connected to air-Cherenkov and scintillator ... More
Tunka-Rex: the Cost-Effective Radio Extension of the Tunka Air-Shower ObservatoryApr 07 2015Tunka-Rex is the radio extension of the Tunka cosmic-ray observatory in Siberia close to Lake Baikal. Since October 2012 Tunka-Rex measures the radio signal of air-showers in coincidence with the non-imaging air-Cherenkov array Tunka-133. Furthermore, ... More
Tunka-Rex: Status and Results of the First Measurements (RICAP 2013)Oct 31 2013Tunka-Rex is the radio extension of Tunka-133 located in Siberia close to Lake Baikal. The latter is a photomultiplier array registering air-Cherenkov light from air showers induced by cosmic-ray particles with initial energies of approximately $10^{16}$ ... More
Tunka-Rex: energy reconstruction with a single antenna station (ARENA 2016)Nov 29 2016Feb 01 2017The Tunka-Radio extension (Tunka-Rex) is a radio detector for air showers in Siberia. From 2012 to 2014, Tunka-Rex operated exclusively together with its host experiment, the air-Cherenkov array Tunka-133, which provided trigger, data acquisition, and ... More
Measurement of cosmic-ray air showers with the Tunka Radio Extension (Tunka-Rex)Sep 29 2015Tunka-Rex is a radio detector for cosmic-ray air showers in Siberia, triggered by Tunka-133, a co-located air-Cherenkov detector. The main goal of Tunka-Rex is the cross-calibration of the two detectors by measuring the air-Cherenkov light and the radio ... More
Calibration of the absolute amplitude scale of the Tunka Radio Extension (ICRC 2015)Aug 25 2015The Tunka Radio Extension (Tunka-Rex) is an array of 44 radio antenna stations, distributed over 3 km$^{2}$, constituting a radio detector for air showers with an energy threshold around 10$^{17}$ eV. It is an extension to Tunka-133, an air-Cherenkov ... More
First results of the CROME experimentAug 02 2011Aug 04 2011It is expected that a radio signal in the microwave range is produced in the atmosphere due to molecular bremsstrahlung initiated by extensive air showers. The CROME (Cosmic-Ray Observation via Microwave Emission) experiment was built to search for this ... More
Tunka-Rex: Status, Plans, and Recent Results (ARENA 2016)Nov 29 2016Jan 31 2017Tunka-Rex, the Tunka Radio extension at the TAIGA facility (Tunka Advanced Instrument for cosmic ray physics and Gamma Astronomy) in Siberia, has recently been expanded to a total number 63 SALLA antennas, most of them distributed on an area of one square ... More
Towards a cosmic-ray mass-composition study at Tunka Radio Extension (ARENA 2016)Nov 28 2016Feb 10 2017The Tunka Radio Extension (Tunka-Rex) is a radio detector at the TAIGA facility located in Siberia nearby the southern tip of Lake Baikal. Tunka-Rex measures air-showers induced by high-energy cosmic rays, in particular, the lateral distribution of the ... More
The Tunka Radio Extension (Tunka-Rex): Radio Measurements of Cosmic Rays in Siberia (PISA 2015)Sep 04 2015The Tunka observatory is located close to Lake Baikal in Siberia, Russia. Its main detector, Tunka-133, is an array of photomultipliers measuring Cherenkov light of air showers initiated by cosmic rays in the energy range of approximately $10^{16}-10^{18}\,$eV. ... More
A parameterization for the radio emission of air showers as predicted by CoREAS simulations and applied to LOFAR measurementsFeb 12 2014Jun 19 2014Measuring radio emission from air showers provides excellent opportunities to directly measure all air shower properties, including the shower development. To exploit this in large-scale experiments, a simple and analytic parameterization of the distribution ... More
Simulation of the Radiation Energy Release in Air ShowersSep 19 2016A simulation study of the energy released by extensive air showers in the form of MHz radiation is performed using the CoREAS simulation code. We develop an efficient method to extract this radiation energy from air-shower simulations. We determine the ... More
Simulation of Radiation Energy Release in Air ShowersJun 06 2016Sep 19 2016A simulation study of the energy released by extensive air showers in the form of MHz radiation is performed using the CoREAS simulation code. We develop an efficient method to extract this radiation energy from air-shower simulations. We determine the ... More
Quantum transitions induced by the third cumulant of current fluctuationsJun 23 2005Oct 14 2005We investigate the transitions induced by external current fluctuations on a small probe quantum system. The rates for the transitions between the energy states are calculated using the real-time Keldysh formalism for the density matrix evolution. We ... More