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Related papers: Detecting cosmic rays with the LOFAR radio telesco…

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We present the first sub-mJy ($\approx0.7$ mJy beam$^{-1}$) survey to be completed below 100 MHz, which is over an order of magnitude deeper than previously achieved for widefield imaging of any field at these low frequencies. The high…

We propose a new way to observe cosmic-ray-induced air showers by imaging the radio emission. With simulations we demonstrate key features for imaging the radio-wave emission from air showers, which show similarities to the well-established…

High Energy Astrophysical Phenomena · Physics 2026-05-18 Juan Ammerman-Yebra , Harm Schoorlemmer , Anne Timmermans , Sebastian Achim Mueller

We report on the results of a search for radio transients between 115 and 190\,MHz with the LOw-Frequency ARray (LOFAR). Four fields have been monitored with cadences between 15 minutes and several months. A total of 151 images were…

This study aims to investigate the ambiguous source and the underlying physical processes of the solar type III radio bursts that occurred on April 3, 2019, through the utilization of multiwavelength observations from the LOFAR radio…

Solar and Stellar Astrophysics · Physics 2023-12-20 Mohamed Nedal , Kamen Kozarev , Peijin Zhang , Pietro Zucca

Detection of (ultra-) high-energy cosmic rays with the use of radio frequency emission from extensive air showers has been proven as complimentary to existing ground array detection techniques. Great progress has been made in the…

Instrumentation and Methods for Astrophysics · Physics 2019-08-13 Sijbrand de Jong

The field of ultra-high energy cosmic rays made a lot of progresses last years with large area experiments such as the Pierre Auger Observatory, HiRes and the Telescope Array. A suppression of the cosmic ray flux at energies above…

High Energy Astrophysical Phenomena · Physics 2014-11-20 Benoît Revenu

The measurement of the radio emission from extensive air showers, induced by high-energy cosmic rays is one of the key science projects of the LOFAR radio telescope. The LOfar Radboud air shower Array (LORA) has been installed in the core…

We report the first direct measurement of the overall characteristics of microwave radio emission from extensive air showers. Using a trigger provided by the KASCADE-Grande air shower array, the signals of the microwave antennas of the…

Digital radio arrays have become an effective tool to measure air showers at energies around and above 100 PeV. Compared to optical techniques, the radio technique is not restricted to clear nights. Thanks to recent progress on…

High Energy Astrophysical Phenomena · Physics 2022-04-28 Frank G. Schröder

The Auger Engineering Radio Array (AERA) is an extension of the Pierre Auger Cosmic-Ray Observatory. It is used to detect radio emission from extensive air showers with energies beyond $10^{17}~$eV in the $30 - 80~$MHz frequency band. After…

High Energy Astrophysical Phenomena · Physics 2017-03-20 Christian Glaser

Type III radio bursts are the result of plasma emission from mildly relativistic electron beams propagating from the low solar corona into the heliosphere where they can eventually be detected in situ if they align with the location of a…

The southern Auger Observatory provides an excellent test bed to study the radio detection of extensive air showers as an alternative, cost-effective, and accurate tool for cosmic-ray physics. The data from the radio setup can be correlated…

Astrophysics · Physics 2019-08-13 A. M. van den Berg

In this paper, I present a review of the main results obtained in the last 10 years in the field of radio-detection of cosmic-ray air showers in the MHz range. All results from all experiments cannot be reported here so that I will focus on…

High Energy Astrophysical Phenomena · Physics 2015-06-15 Benoît Revenu

Large High Altitude Air Shower Observatory(LHAASO) is a composite cosmic ray observatory consisting of three detector arrays: kilometer square array (KM2A) which includes the electromagnetic detector array and muon detector array, water…

High Energy Astrophysical Phenomena · Physics 2019-04-22 L. Q. Yin , S. S. Zhang , Z. Cao , B. Y. Bi , C. Wang , J. L. Liu , L. L. Ma , M. J. Yang , Tiina Suomijarvi , Y. Zhang , Z. Y. You , Z. Z Zong

Detection and mitigation of radio frequency interference (RFI) is the first and also the key step for data processing in radio observations, especially for ongoing low frequency radio experiments towards the detection of the cosmic dawn and…

Instrumentation and Methods for Astrophysics · Physics 2016-03-02 Yan Huang , Xiang-Ping Wu , Qian Zheng , Jun-Hua Gu , Haiguang Xu

Cassiopeia A was observed using the Low-Band Antennas of the LOw Frequency ARray (LOFAR) with high spectral resolution. This allowed a search for radio recombination lines (RRLs) along the line-of-sight to this source. Five carbon-alpha…

A study of the response in energy of the radio-detection method of air showers initiated by ultra-high-energy cosmic rays is presented. Data analysis of the CODALEMA experiment shows that a strong correlation can be demonstrated between the…

High Energy Astrophysical Phenomena · Physics 2012-10-08 Ahmed Rebai , Pascal Lautridou , Alain Lecacheux , Olivier Ravel

LOPES was the radio extension of the KASCADE-Grande particle-detector array consisting of up to 30 antennas measuring the radio emission of cosmic-ray air showers between 40 and 80 MHz with an energy threshold of around 100 PeV. Even with…

High Energy Astrophysical Phenomena · Physics 2019-08-14 Frank G. Schröder , Katrin Link

Radio astronomy is entering a new era with new and future radio observatories such as the Low Frequency Array and the Square Kilometer Array. We describe in detail an automated flagging pipeline and evaluate its performance. With only a…

Instrumentation and Methods for Astrophysics · Physics 2010-07-16 A. R. Offringa , A. G. de Bruyn , S. Zaroubi , M. Biehl

We present a survey of the radio sky accessible from the first station of the Long Wavelength Array (LWA1). Images are presented at nine frequencies between 35 and 80 MHz with spatial resolutions ranging from $4.7^\circ$ to $2.0^\circ$,…

Instrumentation and Methods for Astrophysics · Physics 2017-07-20 Jayce Dowell , Gregory B. Taylor , Frank K. Schinzel , Namir E. Kassim , Kevin Stovall