scholarly journals An investigation on the phase angle of radio signals from cosmic ray air showers

2017 ◽  
Author(s):  
Mohammad Sabouhi ◽  
Gohar Rastegarzadeh
Keyword(s):  
Phase Angle ◽  
Cosmic Ray ◽  
Air Showers ◽  
Radio Signals

scholarly journals Classification and recovery of radio signals from cosmic ray induced air showers with deep learning

2019 ◽  
Vol 14 (04) ◽  
pp. P04005-P04005 ◽  
Author(s):  
M. Erdmann ◽  
F. Schlüter ◽  
R. Šmída
Keyword(s):  
Deep Learning ◽  
Cosmic Ray ◽  
Air Showers ◽  
Radio Signals

scholarly journals Simulations of reflected radio signals from cosmic ray induced air showers

2015 ◽  
Vol 66 ◽  
pp. 31-38 ◽  
Author(s):  
Jaime Alvarez-Muñiz ◽  
Washington R. Carvalho ◽  
Daniel García-Fernández ◽  
Harm Schoorlemmer ◽  
Enrique Zas
Keyword(s):  
Cosmic Ray ◽  
Air Showers ◽  
Radio Signals

scholarly journals Reflections on the anomalous ANITA events: the Antarctic subsurface as a possible explanation

2020 ◽  
Vol 61 (81) ◽  
pp. 92-98 ◽  
Author(s):  
Ian M. Shoemaker ◽  
Alexander Kusenko ◽  
Peter Kuipers Munneke ◽  
Andrew Romero-Wolf ◽  
Dustin M. Schroeder ◽  
...  
Keyword(s):  
Phase Inversion ◽  
Cosmic Ray ◽  
High Energy ◽  
Air Showers ◽  
Radio Signals ◽  
Subsurface Layers ◽  
Balloon Experiment ◽  
Antarctic Impulsive Transient Antenna ◽  
Sole Criterion ◽  
The Antarctic

AbstractThe Antarctic Impulsive Transient Antenna (ANITA) balloon experiment was designed to detect radio signals initiated by high-energy neutrinos and cosmic ray (CR) air showers. These signals are typically discriminated by the polarization and phase inversions of the radio signal. The reflected signal from CRs suffer phase inversion compared to a direct ‘tau neutrino’ event. In this paper, we study subsurface reflection, which can occur without phase inversion, in the context of the two anomalous up-going events reported by ANITA. It is found that subsurface layers and firn density inversions may plausibly account for the events, while ice fabric layers and wind ablation crusts could also play a role. This hypothesis can be tested with radar surveying of the Antarctic region in the vicinity of the anomalous ANITA events. Future experiments should not use phase inversion as a sole criterion to discriminate between down-going and up-going events, unless the subsurface reflection properties are well understood.

scholarly journals ARIANNA: Measurement of cosmic rays with a radio neutrino detector in Antarctica

2019 ◽  
Vol 216 ◽  
pp. 02008 ◽  
Author(s):  
Christian Glaser
Keyword(s):  
Cosmic Rays ◽  
Cosmic Ray ◽  
Cost Effective ◽  
Neutrino Detector ◽  
Air Showers ◽  
Ice Shelf ◽  
Ross Ice Shelf ◽  
Radio Signals ◽  
Single Detector ◽  
The Antarctic

The ARIANNA detector aims to detect neutrinos with energies above 1016 eV by instrumenting 0.5 Teratons of ice with a surface array of a thousand independent radio detector stations in Antarctica. The Antarctic ice is transparent to the radio signals caused by the Askaryan effect which allows for a cost-effective instrumentation of large volumes. Several pilot stations are currently operating successfully at the Moore’s Bay site (Ross Ice Shelf) and at the South Pole. As the ARIANNA detector stations are positioned at the surface, the more abundant cosmic-ray air showers are also measured and serve as a direct way to prove the capabilities of the detector. We will present measured cosmic rays and will show how the incoming direction, polarization and electric field of the cosmicray pulse can be reconstructed from single detector stations comprising 4 upward and 4 downward facing LPDA antennas.

scholarly journals Towards real-time cosmic-ray identification with the LOw Frequency ARay

2019 ◽  
Vol 216 ◽  
pp. 04005 ◽  
Author(s):  
Antonio Bonardi ◽  
Stijn Buitink ◽  
Arthur Corstanje ◽  
Heino Falcke ◽  
Brian M. Hare ◽  
...  
Keyword(s):  
Cosmic Rays ◽  
Real Time ◽  
Low Frequency ◽  
Cosmic Ray ◽  
Recognition System ◽  
Extensive Air Showers ◽  
Particle Detector ◽  
Air Showers ◽  
The Real ◽  
Radio Signals

The radio signals emitted by Extensive Air Showers have been successfully used for the last decade by LOFAR to reconstruct the properties of the primary cosmic rays. Since an effective real-time recognition system for the very short radio pulses is lacking, cosmic-ray acquisition is currently triggered by an external array of particle detector, called LORA, limiting the LOFAR collecting area to the area covered by LORA. A new algorithm for the real-time cosmic-ray detection has been developed for the LOFAR Low Band Antenna, which are sensitive between 10 and 90 MHz, and is here presented together with the latest results.

scholarly journals A Rotationally Symmetric Lateral Distribution Function for Radio Emission from Inclined Air Showers

2019 ◽  
Vol 216 ◽  
pp. 03009 ◽  
Author(s):  
Tim Huege ◽  
Lukas Brenk ◽  
Felix Schlüter
Keyword(s):  
Cosmic Ray ◽  
Radiation Energy ◽  
Lateral Distribution ◽  
Air Showers ◽  
Radio Detection ◽  
Event Reconstruction ◽  
Rotationally Symmetric ◽  
Shower Maximum ◽  
Radio Signals ◽  
Charge Excess

Radio detection of inclined air showers is currently receiving great attention. To exploit the potential, a suitable event reconstruction needs to be developed. A crucial step in this direction is the development of a model for the lateral distribution of the radio signals, which in the case of inclined air showers exhibits asymmetries due to “earlylate” effects in addition to the usual asymmetries from the superposition of charge-excess and geomagnetic emission. We present a model which corrects for all asymmetries and successfully describes the lateral distribution of the energy fluence with a rotationally symmetric function. This gives access to the radiation energy as a measure of the energy of the cosmic-ray primary, and is also sensitive to the depth of the shower maximum.

Sign in / Sign up

Export Citation Format

Share Document