SPace and AStroparticle SPAS Group

Madrid, Spain

SPace and AStroparticle SPAS Group

Madrid, Spain
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Toscano S.,Data Center for Astrophysics | Morales de los Rios J.A.,SPace and AStroparticle SPAS Group | Neronov A.,Data Center for Astrophysics | Rodriguez Frias M.D.,SPace and AStroparticle SPAS Group | Wada S.,RIKEN
Experimental Astronomy | Year: 2014

The JEM-EUSO telescope will detect Ultra-High Energy Cosmic Rays (UHECRs) from space, detecting the UV Fluorescence Light produced by Extensive Air Showers (EAS) induced by the interaction of the cosmic rays with the earth's atmosphere. The capability to reconstruct the properties of the primary cosmic ray depends on the accurate measurement of the atmospheric conditions in the region of EAS development. The Atmospheric Monitoring (AM) system of JEM-EUSO will host a LIDAR, operating in the UV band, and an Infrared camera to monitor the cloud cover in the JEM-EUSO Field of View, in order to be sensitive to clouds with an optical depth τ ≥ 0.15 and to measure the cloud top altitude with an accuracy of 500 m and an altitude resolution of 500 m. © 2014 Springer Science+Business Media Dordrecht.


Morales De Los Rios J.A.,SPace and AStroparticle SPAS Group | Morales De Los Rios J.A.,RIKEN | Joven E.,Institute of Astrophysics of Canarias | Del Peral L.,SPace and AStroparticle SPAS Group | And 6 more authors.
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | Year: 2014

JEM-EUSO (Extreme Universe Space Observatory on Japanese Experiment Module) is an advanced observatory that will be on-board the International Space Station (ISS) and use the Earth's atmosphere as a huge calorimeter detector. However, the atmospheric clouds introduce uncertainties in the signals measured by JEM-EUSO. Therefore, it is extremely important to know the atmospheric conditions and properties of the clouds in the Field of View (FoV) of the telescope. The Atmospheric Monitoring System (AMS) of JEM-EUSO includes a lidar and an infrared imaging system, IR-Camera, aimed to detect the presence of clouds and to obtain the cloud coverage and cloud top altitude during the observations of the JEM-EUSO main telescope. To define the road-map for the design of the electronics, the detector has been tested extensively with a first prototype. The actual design of the IR-Camera, the test of the prototype, and the outcome of this characterization are presented in this paper. © 2014 Elsevier B.V.


Anzalone A.,Istituto di Astrofisica Spaziale e Fisica Cosmica | Bertaina M.,University of Turin | Cremonini R.,University of Turin | Frias Rodriguez M.D.,SPACE and AStroparticle SPAS Group | Isgro F.,University of Naples Federico II
Proceedings of the 32nd International Cosmic Ray Conference, ICRC 2011 | Year: 2011

The observation of the atmosphere is a crucial task for the JEM-EUSO mission, and a module for the atmospheric monitoring is included in the design of the whole system. In this paper the retrieval of cloud coverage in the field of view of the telescope is addressed considering both radiative methods commonly used in the meteorological field and methods of image analysis, with the aim of studying the feasibility of these approaches to the data that the JEMEUSO infra red camera will provide. The complementarity of the two approaches will be further investigated, together with a different set of techniques, to contribute to achieve the best cloud estimation in JEM-EUSO.


Neronov A.,Data Center for Astrophysics | Wada S.,RIKEN | Rodriguez Frias M.D.,SPace and AStroparticle SPAS Group | Morales De Los Rios A.,SPace and AStroparticle SPAS Group | And 28 more authors.
Proceedings of the 32nd International Cosmic Ray Conference, ICRC 2011 | Year: 2011

JEM-EUSO telescope on International Space Station will detect UV fluorescence emission from Ultra High Energy Cosmic Rays (UHECR) induced Extensive Air Showers (EAS) penetrating in the atmosphere. The accuracy of reconstruction of the properties of the primary UHECR particles from the measurements of UV light depends on the extinction and scattering properties of the atmosphere at the location of the EAS and between the EAS and JEM-EUSO. The Atmospheric Monitoring system of JEM-EUSO will use the LIDAR, operating in the UV band, and an infrared camera to detect cloud and aerosol layer features across the entire 60? field of view of JEM-EUSO telescope, to measure the cloud top altitudes with the accuracy of 500 m and the optical depth profile of the atmosphere in the direction of each EAS with the accuracy Δτ ≤ 0.15 and resolution of 500 m. This should ensure that the energy of the primary UHECR particles and the depth of EAS maxima are measured with the accuracy better than 30% and 120 g/cm2, respectively.


De Los Rios J.A.M.,SPace and AStroparticle SPAS Group | Saez-Cano G.,SPace and AStroparticle SPAS Group | Prieto H.,SPace and AStroparticle SPAS Group | Del Peral L.,SPace and AStroparticle SPAS Group | And 26 more authors.
Proceedings of the 32nd International Cosmic Ray Conference, ICRC 2011 | Year: 2011

The JEM-EUSO space observatory will be launched and attached to the Japanese module of the International Space Station (ISS) in 2016. Its aims is to observe UV photon tracks produced by Ultra High Energy Cosmic Rays (UHECR) and Extremely High Energy Cosmic Rays (EHECR) developing in the atmosphere and producing Extensive Air Showers (EAS). JEM-EUSO will use our atmosphere as a huge calorimeter, to detect the electromagnetic and hadronic components of the EAS. The Atmospheric Monitoring System plays a fundamental role in our understanding of the atmospheric conditions in the Field of View (FoV) of the telescope and it will include an IR-Camera for cloud coverage and cloud top height detection.


Rodriguez Frias M.D.,SPace and AStroparticle SPAS Group
Memorie della Societa Astronomica Italiana, Supplementi - Journal of the Italian Astronomical Society, Supplement | Year: 2012

Cosmic Rays Physics is one of the fundamental key issues and an essential tool of Astroparticle Physics that aims, in a unique way to address many fundamental questions of the extreme and non-thermal Universe in the Astroparticle Physics domain at the highest energies never detected so far. Moreover, Ultra High Energy Cosmic Rays (UHECR) has witnessed a major breakthrough with the Pierre Auger Observatory (PAO) success. The results on UHECR by the PAO have pointed out the huge physics potential of this field that can be achieved by an upgrade of the performance of current ground-based instruments and new space-based missions, as the JEM-EUSO space observatory, to fully address the Cosmic Ray Physics potential and to achieve one of our main goals, reach the so called "Particle Astronomy Era". © SAIt 2012.


Saez-Cano G.,SPace and AStroparticle SPAS Group | Shinozaki K.,SPace and AStroparticle SPAS Group | Shinozaki K.,RIKEN | Del Peral L.,SPace and AStroparticle SPAS Group | And 2 more authors.
Advances in Space Research | Year: 2014

JEM-EUSO, the Extreme Universe Space Observatory (EUSO) on-board the Japanese Experiment Module (JEM) at the International Space Station, is a space-based observatory for Ultra High Energy Cosmic Rays (UHECR) which uses the atmosphere as a huge calorimeter. Therefore, an accurate monitoring of the atmosphere in cloudy conditions is important to properly reconstruct the UHECR events observed by the JEM-EUSO telescope. In this work we study the impact of the presence of clouds on the UV signal received by JEM-EUSO from which UHECR events will be reconstructed, and investigate the JEM-EUSO trigger efficiency in cloudy conditions as well. © 2013 COSPAR. Published by Elsevier Ltd. All rights reserved.


Rodriguez Frias M.D.,SPace and AStroparticle SPAS Group | De Losrios J.A.M.,SPace and AStroparticle SPAS Group | Del Peral L.,SPace and AStroparticle SPAS Group | Saez-Cano G.,SPace and AStroparticle SPAS Group | And 38 more authors.
EPJ Web of Conferences | Year: 2013

An Atmospheric Monitoring System (AMS) is mandatory and a key element of a space-based mission which aims to detect Ultra-High Energy Cosmic Rays (UHECR). JEM-EUSO has a dedicated atmospheric monitoring system that plays a fundamental role in our understanding of the atmospheric conditions in the Field of View (FoV) of the telescope. Our AMS consists of an infrared camera and a LIDAR device that are being fully designed with space qualification to fulfil the scientific requirements of this space mission. This AMS will provide information of the cloud cover in the FoV of JEM-EUSO, as well as measurements of the cloud top altitudes with an accuracy of 500 m and the optical depth profile of the atmosphere transmittance in the direction of each air shower with an accuracy of 0.15 degree and a resolution of 500 m. This will ensure that the energy of the primary UHECR and the depth of maximum development of the EAS (Extensive Air Shower) are measured with an accuracy better than 30% and 120 g/cm2, for EAS occurring either in the clear sky or with the EAS depth of maximum development above optically thick cloud layers. Moreover novel stereoscopic and radiometric retrieval techniques are under development to infer the Cloud Top Height (CTH) from the brightness temperature patterns obtained from the infrared camera. © Owned by the authors, published by EDP Sciences, 2013.


De Los Rios J.A.M.,SPace and AStroparticle SPAS Group | Frias M.D.R.,SPace and AStroparticle SPAS Group | Del Peral L.,SPace and AStroparticle SPAS Group | Prieto H.,SPace and AStroparticle SPAS Group | Saez-Cano G.,SPace and AStroparticle SPAS Group
Communications in Computer and Information Science | Year: 2012

For High Energy Physics (HEP) experiments the huge amount of data and complex analysis algorithms require the use of advanced GRID computational resources. Therefore, an exhaustive analysis of computational requirements and resources, in the frame of the GRID architecture, intended for the JEM-EUSO space mission software and computing infrastructure has been performed. Moreover solutions to account for the software and data repositories as well as a proper administrative organization are pointed out. © 2012 Springer-Verlag.


Frias M.D.R.,SPace and AStroparticle SPAS Group | Frias M.D.R.,University of Geneva | Toscano S.,University of Geneva | Bozzo E.,University of Geneva | And 4 more authors.
EPJ Web of Conferences | Year: 2015

An Atmospheric Monitoring System (AMS) is a mandatory and key device of a space-based mission which aims to detect Ultra-High Energy Cosmic Rays (UHECR) and Extremely-High Energy Cosmic Rays (EHECR) from Space. JEM-EUSO has a dedicated atmospheric monitoring system that plays a fundamental role in our understanding of the atmospheric conditions in the Field of View (FoV) of the telescope. Our AMS consists of a very challenging space infrared camera and a LIDAR device, that are being fully designed with space qualification to fulfil the scientific requirements of this space mission. The AMS will provide information of the cloud cover in the FoV of JEM-EUSO, as well as measurements of the cloud top altitudes with an accuracy of 500? m and the optical depth profile of the atmosphere transmittance in the direction of each air shower with an accuracy of 0.15 degree and a resolution of 500? m. This will ensure that the energy of the primary UHECR and the depth of maximum development of the EAS (Extensive Air Shower) are measured with an accuracy better than 30% primary energy and 120? g/cm2 depth of maximum development for EAS occurring either in clear sky or with the EAS depth of maximum development above optically thick cloud layers. Moreover a very novel radiometric retrieval technique considering the LIDAR shots as calibration points, that seems to be the most promising retrieval algorithm is under development to infer the Cloud Top Height (CTH) of all kind of clouds, thick and thin clouds in the FoV of the JEM-EUSO space telescope. © Owned by the authors, published by EDP Sciences, 2015.

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