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The exposure of the hybrid detector of the Pierre Auger Observatory

arXiv: 1010.6162 , http://arxiv.org/abs/1010.6162
The Pierre Auger Observatory is a detector for ultra-high energy cosmic rays. It consists of a surface array to measure secondary particles at ground level and a fluorescence detector to measure the development of air showers in the atmosphere above the array. The "hybrid" detection mode combines the information from the two subsystems. We describe the determination of the hybrid exposure for events observed by the fluorescence telescopes in coincidence with at least one water-Cherenkov detector of the surface array. A detailed knowledge of the time dependence of the detection operations is crucial for an accurate evaluation of the exposure. We discuss the relevance of monitoring data collected during operations, such as the status of the fluorescence detector, background light and atmospheric conditions, that are used in both simulation and reconstruction.
Paper accepted by Astroparticle Physics
- Colorado State University United States
- University of Rome Tor Vergata Italy
- Federal University of Western Bahia Brazil
- Université de Nantes France
- Grenoble Alpes University France
ASTR:IM] Sciences of the Universe/Astrophysics/Instrumentation and Methods for Astrophysic [[SDU], Astronomy, Fluorescence detector, Auger experiment, Ultra high energy cosmic rays; Pierre Auger Observatory; Extensive air showers; Trigger; Exposure; Fluorescence detector; Hybrid, ASTR:CO] Sciences of the Universe/Astrophysics/Cosmology and Extra-Galactic Astrophysics [[SDU], info:eu-repo/classification/ddc/530, ASTR:CO] Physique/Astrophysique/Cosmologie et astrophysique extra-galactique [[PHYS], astro-ph.HE, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, ddc:530, [ SDU.ASTR.IM ] Sciences of the Universe [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], Pierre Auger Observatory, System., ENERGY-SPECTRUM, ultra high energy cosmic rays; Pierre Auger Observatory; extensive air showers; trigger; exposure; fluorescence detector; hybrid, Cosmic Rays, fluorescence detector, ASTR:CO] Physics/Astrophysics/Cosmology and Extra-Galactic Astrophysics [[PHYS], ASTR:IM] Planète et Univers/Astrophysique/Instrumentation et méthodes pour l'astrophysique [[SDU], SIMULATION, [SDU.ASTR.IM] Sciences of the Universe/Astrophysics/Instrumentation and Methods for Astrophysic, Física nuclear, ASTR:IM] Physique/Astrophysique/Instrumentation et méthodes pour l'astrophysique [[PHYS], Astrophysics - High Energy Astrophysical Phenomena, ASTR:IM] Physics/Astrophysics/Instrumentation and Methods for Astrophysic [[PHYS], [PHYS.ASTR.CO] Physics/Astrophysics/Cosmology and Extra-Galactic Astrophysics, Simulation, [PHYS.ASTR.IM]Physics [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], Showers, 539.1, FLUORESCENCE DETECTOR, [SDU.ASTR.CO] Sciences of the Universe/Astrophysics/Cosmology and Extra-Galactic Astrophysics, FOS: Physical sciences, ultra high energy cosmic rays, 530, Exposure, [SDU.ASTR.IM] Sciences of the Universe [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], Ultra high energy cosmic rays ; Pierre Auger Observatory ; extensive air showers ; hybrid exposure ; fluorescence detector, SHOWERS, Extensive air showers, extensive air showers, hybrid, Física, 028, Ultra high energy cosmic rays, trigger, 2207 Física Atómica y Nuclear, Ultra high energy cosmic rays; Pierre Auger Observatory; Extensive air showers; Exposure; Fluorescence detector, Hybrid, [SDU.ASTR.IM]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], flux, Trigger, [PHYS.ASTR.IM] Physics/Astrophysics/Instrumentation and Methods for Astrophysic, exposure, ASTR:CO] Planète et Univers/Astrophysique/Cosmologie et astrophysique extra-galactique [[SDU], Experimental High Energy Physics, Energy spectrum, [ PHYS.ASTR.IM ] Physics [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], [PHYS.ASTR.IM] Physics [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], SYSTEM, Cosmic Rays; Auger experiment; flux; exposure
ASTR:IM] Sciences of the Universe/Astrophysics/Instrumentation and Methods for Astrophysic [[SDU], Astronomy, Fluorescence detector, Auger experiment, Ultra high energy cosmic rays; Pierre Auger Observatory; Extensive air showers; Trigger; Exposure; Fluorescence detector; Hybrid, ASTR:CO] Sciences of the Universe/Astrophysics/Cosmology and Extra-Galactic Astrophysics [[SDU], info:eu-repo/classification/ddc/530, ASTR:CO] Physique/Astrophysique/Cosmologie et astrophysique extra-galactique [[PHYS], astro-ph.HE, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, ddc:530, [ SDU.ASTR.IM ] Sciences of the Universe [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], Pierre Auger Observatory, System., ENERGY-SPECTRUM, ultra high energy cosmic rays; Pierre Auger Observatory; extensive air showers; trigger; exposure; fluorescence detector; hybrid, Cosmic Rays, fluorescence detector, ASTR:CO] Physics/Astrophysics/Cosmology and Extra-Galactic Astrophysics [[PHYS], ASTR:IM] Planète et Univers/Astrophysique/Instrumentation et méthodes pour l'astrophysique [[SDU], SIMULATION, [SDU.ASTR.IM] Sciences of the Universe/Astrophysics/Instrumentation and Methods for Astrophysic, Física nuclear, ASTR:IM] Physique/Astrophysique/Instrumentation et méthodes pour l'astrophysique [[PHYS], Astrophysics - High Energy Astrophysical Phenomena, ASTR:IM] Physics/Astrophysics/Instrumentation and Methods for Astrophysic [[PHYS], [PHYS.ASTR.CO] Physics/Astrophysics/Cosmology and Extra-Galactic Astrophysics, Simulation, [PHYS.ASTR.IM]Physics [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], Showers, 539.1, FLUORESCENCE DETECTOR, [SDU.ASTR.CO] Sciences of the Universe/Astrophysics/Cosmology and Extra-Galactic Astrophysics, FOS: Physical sciences, ultra high energy cosmic rays, 530, Exposure, [SDU.ASTR.IM] Sciences of the Universe [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], Ultra high energy cosmic rays ; Pierre Auger Observatory ; extensive air showers ; hybrid exposure ; fluorescence detector, SHOWERS, Extensive air showers, extensive air showers, hybrid, Física, 028, Ultra high energy cosmic rays, trigger, 2207 Física Atómica y Nuclear, Ultra high energy cosmic rays; Pierre Auger Observatory; Extensive air showers; Exposure; Fluorescence detector, Hybrid, [SDU.ASTR.IM]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], flux, Trigger, [PHYS.ASTR.IM] Physics/Astrophysics/Instrumentation and Methods for Astrophysic, exposure, ASTR:CO] Planète et Univers/Astrophysique/Cosmologie et astrophysique extra-galactique [[SDU], Experimental High Energy Physics, Energy spectrum, [ PHYS.ASTR.IM ] Physics [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], [PHYS.ASTR.IM] Physics [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], SYSTEM, Cosmic Rays; Auger experiment; flux; exposure
