Earth magnetic field effects on the cosmic electron flux as background for Cherenkov Telescopes at low energies
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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2012
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09276505_v36_n1_p123_Supanitsky http://hdl.handle.net/20.500.12110/paper_09276505_v36_n1_p123_Supanitsky |
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paper:paper_09276505_v36_n1_p123_Supanitsky2025-07-30T18:28:06Z Earth magnetic field effects on the cosmic electron flux as background for Cherenkov Telescopes at low energies 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. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09276505_v36_n1_p123_Supanitsky 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 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. |
| 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 |
| publishDate |
2012 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09276505_v36_n1_p123_Supanitsky http://hdl.handle.net/20.500.12110/paper_09276505_v36_n1_p123_Supanitsky |
| _version_ |
1840324946346115072 |