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Context. The presence of clouds during observations with Imaging Atmospheric Cherenkov Telescopes can strongly affect the performance of the instrument due to additional absorption of light and scattering of light beyond the field of view…

Instrumentation and Methods for Astrophysics · Physics 2024-05-22 Natalia Żywucka , Julian Sitarek , Dorota Sobczyńska , Mario Pecimotika , Dario Hrupec , Dijana Dominis Prester , Lovro Pavletić , Saša Mićanović

We propose a way to simulate Cherenkov detector response using a generative adversarial neural network to bypass low-level details. This network is trained to reproduce high level features of the simulated detector events based on input…

High Energy Physics - Experiment · Physics 2019-03-29 Denis Derkach , Nikita Kazeev , Fedor Ratnikov , Andrey Ustyuzhanin , Alexandra Volokhova

We investigate the radiation from a charged particle moving outside a dielectric cylinder parallel to its axis. It is assumed that the cylinder is immersed into a homogeneous medium. The expressions are given for the vector potential and…

Accelerator Physics · Physics 2021-01-04 A. A. Saharian , L. Sh. Grigoryan , A. Kh. Grigorian , H. F. Khachatryan , A. S. Kotanjyan

The radiation generated by a charged longitudinal oscillator moving with a constant drift velocity along the axis of a dielectric cylinder immersed in a homogeneous medium is investigated. For an arbitrary oscillation law a formula is…

High Energy Physics - Theory · Physics 2015-06-26 Aram A. Saharian , Anna S. Kotanjyan

An in-depth characterization of coherent radio Cherenkov pulses from particle showers in dense dielectric media, referred to as the Askaryan effect, is presented. The time-domain calculation developed in this article is based on a form…

High Energy Astrophysical Phenomena · Physics 2012-04-17 Jaime Alvarez-Muñiz , Andrés Romero-Wolf , Enrique Zas

In the framework of Carrol-Field-Jackiw electrodynamics we calculate the spectral distribution of the Cherenkov radiation (CHR) produced by a charge moving at constant velocity in a chiral medium. We find zero, one or two Cherenkov angles…

High Energy Physics - Phenomenology · Physics 2022-07-05 E. Barredo , L. F. Urrutia

In gamma-ray astronomy through Imaging Atmospheric Cherenkov Telescopes (IACT), the atmosphere is used as a calorimeter. Incident gamma-rays in the GeV-TeV energy range are observed through the electromagnetic showers they produce in the…

High Energy Astrophysical Phenomena · Physics 2020-11-02 S. Sajjad , A. Falvard

This dissertation presents a unified framework for medium characterization with hard probes spanning from Cherenkov light in quantum electrodynamics (QED) to jet drift in quantum chromodynamics (QCD). We first develop a dispersive fit to…

Nuclear Theory · Physics 2026-05-15 Hasan R. Rahman

You & Cheng (1980) argued that, for relativistic electrons moving through a dense gas, the Cerenkov effect will produce peculiar atomic and/or molecular emission lines--Cerenkov lines. They presented a series of formulae to describe the new…

Astrophysics · Physics 2007-05-23 J. H. You , Y. D. Xu , D. B. Liu , J. R. Shi , G. X. Jin

Purpose: Cherenkov radiation carries the potential of direct in-water dose measurements, but its precision is currently limited by a strong anisotropy. Taking advantage of polarization imaging, this work proposes a new approach for high…

Medical Physics · Physics 2022-10-12 Emily Cloutier , Louis Archambault , Luc Beaulieu

The radiation emitted by a charged particle moving along a helical orbit inside a dielectric cylinder immersed into a homogeneous medium is investigated. Expressions are derived for the electromagnetic potentials, electric and magnetic…

High Energy Physics - Theory · Physics 2011-07-19 A. A. Saharian , A. S. Kotanjyan

A method for fast simulation of the Cherenkov light generated by electromagnetic showers is described. The parametrization for the longitudinal profile is used and fluctuations and correlations of the parameters are taken into account in a…

High Energy Physics - Phenomenology · Physics 2007-05-23 L. B. Bezrukov , A. V. Butkevich

Observations with the Cherenkov telescopes are in principle limited to the clear sky conditions due to significant absorption of Cherenkov light by clouds. If the cloud level is high enough or the atmospheric transmission of the cloud is…

Instrumentation and Methods for Astrophysics · Physics 2015-06-23 Dorota Sobczynska , Wlodek Bednarek

Diffusive Radiation is a new type of radiation predicted to occur in randomly inhomogeneous media due to the multiple scattering of pseudophotons. This theoretical effect is now observed experimentally. The radiation is generated by the…

Recent advances in engineered material technologies (e.g., photonic crystals, metamaterials, plasmonics, etc) provide valuable tools to control Cherenkov radiation. In all these approaches, however, the designed materials interact only with…

Optics · Physics 2022-08-09 Hao Hu , Xiao Lin , Liang Jie Wong , Qianru Yang , Baile Zhang , Yu Luo

Ground-based composition measurements of high-energy cosmic rays can be significantly improved by using the direct Cherenkov method. This technique targets the Cherenkov light produced by the primary particle prior to its production of an…

Astrophysics · Physics 2019-08-13 S. A. Wissel

Due to their weak interactions, neutrinos can polarize a medium and acquire an induced charge. We consider the Cherenkov radiation emitted by neutrinos due to their effective electromagnetic interactions as they pass through a polarizable…

High Energy Physics - Phenomenology · Physics 2014-11-17 Juan Carlos D'Olivo , Jose F. Nieves , Palash B. Pal

Although travelling faster than the speed of light in vacuum is not physically allowed, the analogous bound in medium can be exceeded by a moving particle. For an electron in dielectric material this leads to emission of photons which is…

Analysis of PDEs · Mathematics 2021-10-18 Antti Kujanpää

We propose a setup for measuring visible and near-visible internal Smith-Purcell radiation and Cherenkov Diffraction Radiation, based on silica and silicon, and perform quantitative numerical analysis of its radiation efficiency. We…

The main interest of the present work is in analyzing the lateral distribution function (LDF) of Cherenkov radiation from particles that produced in Extensive Air Showers (EAS). The simulation of Cherenkov radiation LDF is fulfilled by…

High Energy Astrophysical Phenomena · Physics 2019-11-13 Zena Fadhel Khadhum , Hassan Abdullah Mahdi , A. A. Al-Rubaiee