Earth magnetic field effects on the cosmic electron flux as background for Cherenkov Telescopes at low energies

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Cosmic ray electrons and positrons constitute an important component of the background for imaging atmospheric Cherenkov Telescope Systems with very low energy thresholds. As the primary energy of electrons and positrons decreases, their contribution to the background trigger rate dominates over pro...

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Autores principales: Supanitsky, A.D., Rovero, A.C.
Formato: JOUR
Materias:
Cherenkov Telescopes
Cosmic electrons
Geomagnetic field
Cherenkov Telescope
Cosmic ray electrons
Earth magnetic fields
Earth's magnetic field
Electron flux
Event reconstruction
Geographical locations
Geomagnetic field model
Geomagnetic fields
Imaging atmospheric Cherenkov telescopes
Low energies
Low energy thresholds
Primary electrons
Primary energies
Trigger rate
Geomagnetism
Magnetic fields
Optical telescopes
Positrons
Protons
Telescopes
Electrons
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_09276505_v36_n1_p123_Supanitsky
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_09276505_v36_n1_p123_Supanitsky
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spelling todo:paper_09276505_v36_n1_p123_Supanitsky2023-10-03T15:47:01Z Earth magnetic field effects on the cosmic electron flux as background for Cherenkov Telescopes at low energies Supanitsky, A.D. Rovero, A.C. Cherenkov Telescopes Cosmic electrons Geomagnetic field Cherenkov Telescope Cosmic ray electrons Earth magnetic fields Earth's magnetic field Electron flux Event reconstruction Geographical locations Geomagnetic field model Geomagnetic fields Imaging atmospheric Cherenkov telescopes Low energies Low energy thresholds Primary electrons Primary energies Trigger rate Geomagnetism Magnetic fields Optical telescopes Positrons Protons Telescopes Electrons Cosmic ray electrons and positrons constitute an important component of the background for imaging atmospheric Cherenkov Telescope Systems with very low energy thresholds. As the primary energy of electrons and positrons decreases, their contribution to the background trigger rate dominates over protons, at least in terms of differential rates against actual energies. After event reconstruction, this contribution might become comparable to the proton background at energies of the order of few GeV. It is well known that the flux of low energy charged particles is suppressed by the Earth's magnetic field. This effect strongly depends on the geographical location, the direction of incidence of the charged particle and its mass. Therefore, the geomagnetic field can contribute to diminish the rate of the electrons and positrons detected by a given array of Cherenkov Telescopes. In this work we study the propagation of low energy primary electrons in the Earth's magnetic field by using the backtracking technique. We use a more realistic geomagnetic field model than the one used in previous calculations. We consider some sites relevant for new generations of imaging atmospheric Cherenkov Telescopes. We also study in detail the case of 5@5, a proposed low energy Cherenkov Telescope array.© 2012 Elsevier B.V. All rights reserved. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09276505_v36_n1_p123_Supanitsky
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Cherenkov Telescopes
Cosmic electrons
Geomagnetic field
Cherenkov Telescope
Cosmic ray electrons
Earth magnetic fields
Earth's magnetic field
Electron flux
Event reconstruction
Geographical locations
Geomagnetic field model
Geomagnetic fields
Imaging atmospheric Cherenkov telescopes
Low energies
Low energy thresholds
Primary electrons
Primary energies
Trigger rate
Geomagnetism
Magnetic fields
Optical telescopes
Positrons
Protons
Telescopes
Electrons
spellingShingle Cherenkov Telescopes
Cosmic electrons
Geomagnetic field
Cherenkov Telescope
Cosmic ray electrons
Earth magnetic fields
Earth's magnetic field
Electron flux
Event reconstruction
Geographical locations
Geomagnetic field model
Geomagnetic fields
Imaging atmospheric Cherenkov telescopes
Low energies
Low energy thresholds
Primary electrons
Primary energies
Trigger rate
Geomagnetism
Magnetic fields
Optical telescopes
Positrons
Protons
Telescopes
Electrons
Supanitsky, A.D.
Rovero, A.C.
Earth magnetic field effects on the cosmic electron flux as background for Cherenkov Telescopes at low energies
topic_facet Cherenkov Telescopes
Cosmic electrons
Geomagnetic field
Cherenkov Telescope
Cosmic ray electrons
Earth magnetic fields
Earth's magnetic field
Electron flux
Event reconstruction
Geographical locations
Geomagnetic field model
Geomagnetic fields
Imaging atmospheric Cherenkov telescopes
Low energies
Low energy thresholds
Primary electrons
Primary energies
Trigger rate
Geomagnetism
Magnetic fields
Optical telescopes
Positrons
Protons
Telescopes
Electrons
description Cosmic ray electrons and positrons constitute an important component of the background for imaging atmospheric Cherenkov Telescope Systems with very low energy thresholds. As the primary energy of electrons and positrons decreases, their contribution to the background trigger rate dominates over protons, at least in terms of differential rates against actual energies. After event reconstruction, this contribution might become comparable to the proton background at energies of the order of few GeV. It is well known that the flux of low energy charged particles is suppressed by the Earth's magnetic field. This effect strongly depends on the geographical location, the direction of incidence of the charged particle and its mass. Therefore, the geomagnetic field can contribute to diminish the rate of the electrons and positrons detected by a given array of Cherenkov Telescopes. In this work we study the propagation of low energy primary electrons in the Earth's magnetic field by using the backtracking technique. We use a more realistic geomagnetic field model than the one used in previous calculations. We consider some sites relevant for new generations of imaging atmospheric Cherenkov Telescopes. We also study in detail the case of 5@5, a proposed low energy Cherenkov Telescope array.© 2012 Elsevier B.V. All rights reserved.
format JOUR
author Supanitsky, A.D.
Rovero, A.C.
author_facet Supanitsky, A.D.
Rovero, A.C.
author_sort Supanitsky, A.D.
title Earth magnetic field effects on the cosmic electron flux as background for Cherenkov Telescopes at low energies
title_short Earth magnetic field effects on the cosmic electron flux as background for Cherenkov Telescopes at low energies
title_full Earth magnetic field effects on the cosmic electron flux as background for Cherenkov Telescopes at low energies
title_fullStr Earth magnetic field effects on the cosmic electron flux as background for Cherenkov Telescopes at low energies
title_full_unstemmed Earth magnetic field effects on the cosmic electron flux as background for Cherenkov Telescopes at low energies
title_sort earth magnetic field effects on the cosmic electron flux as background for cherenkov telescopes at low energies
url http://hdl.handle.net/20.500.12110/paper_09276505_v36_n1_p123_Supanitsky
work_keys_str_mv AT supanitskyad earthmagneticfieldeffectsonthecosmicelectronfluxasbackgroundforcherenkovtelescopesatlowenergies
AT roveroac earthmagneticfieldeffectsonthecosmicelectronfluxasbackgroundforcherenkovtelescopesatlowenergies
_version_ 1807322409292791808

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