scholarly journals Prospects for the detection of high-energy (E > 25 GeV) Fermi pulsars with the Cherenkov Telescope Array

2017 ◽  
Vol 471 (1) ◽  
pp. 431-446 ◽  
Author(s):  
A. Burtovoi ◽  
T. Y. Saito ◽  
L. Zampieri ◽  
T. Hassan
Keyword(s):  
High Energy ◽  
Telescope Array ◽  
Cherenkov Telescope

scholarly journals Simulation studies of the high-energy component of a future imaging Cherenkov telescope array

2008 ◽  
Author(s):  
S. Funk ◽  
J. A. Hinton ◽  
Felix A. Aharonian ◽  
Werner Hofmann ◽  
Frank Rieger
Keyword(s):  
High Energy ◽  
Simulation Studies ◽  
Energy Component ◽  
Telescope Array ◽  
Cherenkov Telescope ◽  
High Energy Component

scholarly journals The ASTRI Program

2019 ◽  
Vol 209 ◽  
pp. 01001
Author(s):  
Salvatore Scuderi
Keyword(s):  
High Energy ◽  
Telescope Array ◽  
Cherenkov Telescope ◽  
Southern Site ◽  
Complete Set ◽  
New Phase ◽  
Prototype Design ◽  
Italian National Institute ◽  
Mirror Configuration

The ASTRI (Astrofisica con Specchi a Tecnologia Replicante Italiana) program was born as a collaborative international effort led by the Italian National Institute for Astrophysics (INAF) to design and realize, within the Cherenkov Telescope Array (CTA) framework, an end-to-end prototype of the Small-Sized Telescope (SST) in a dual-mirror configuration (2M). While the activities concerning the characterization of the prototype are under completion, the program entered a new phase. With the final aim of contributing at the production of the SST telescopes for the CTAO Southern site, we started the development of nine telescopes based on the evolution of the ASTRI prototype design to work as pathfinder for the CTAO. Furthermore, together with the CHEC (Compact High Energy Camera) collaboration, the ASTRI team presented a proposal, that will be evaluated with other proposals, to deliver to CTAO the complete set of SST telescopes.

scholarly journals The Cherenkov Telescope Array production system proto-type for large-scale data processing and simulations

2021 ◽  
Vol 251 ◽  
pp. 02029
Author(s):  
Luisa Arrabito ◽  
Johan Bregeon ◽  
Patrick Maeght ◽  
Michèle Sanguillon ◽  
Andrei Tsaregorodtsev ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Data Processing ◽  
Production System ◽  
Large Scale ◽  
Current System ◽  
High Energy ◽  
Current Status ◽  
Telescope Array ◽  
Cherenkov Telescope ◽  
Very High

The Cherenkov Telescope Array (CTA) is the next-generation instrument in the very-high energy gamma ray astronomy domain. It will consist of tens of Cherenkov telescopes deployed in 2 arrays at La Palma (Spain) and Paranal (ESO, Chile) respectively. Currently under construction, CTA will start operations around 2023 for a duration of about 30 years. During operations CTA is expected to produce about 2 PB of raw data per year plus 5-20 PB of Monte Carlo data. The global data volume to be managed by the CTA archive, including all versions and copies, is of the order of 100 PB with a smooth growing profile. The associated processing needs are also very high, of the order of hundreds of millions of CPU HS06 hours per year. In order to optimize the instrument design and study its performances, during the preparatory phase (2010-2017) and the current construction phase, the CTA consortium has run massive Monte Carlo productions on the EGI grid infrastructure. In order to handle these productions and the future data processing, we have developed a production system based on the DIRAC framework. The current system is the result of several years of hardware infrastructure upgrades, software development and integration of different services like CVMFS and FTS. In this paper we present the current status of the CTA production system and its exploitation during the latest large-scale Monte Carlo campaigns.

scholarly journals Searching for very-high-energy electromagnetic counterparts to gravitational-wave events with the Cherenkov Telescope Array

2021 ◽  
Author(s):  
Barbara Patricelli ◽  
Alessandro Carosi ◽  
Lara Nava ◽  
Monica Seglar-Arroyo ◽  
Fabian Schüssler ◽  
...  
Keyword(s):  
Gravitational Wave ◽  
High Energy ◽  
Telescope Array ◽  
Cherenkov Telescope ◽  
Very High Energy ◽  
Very High

scholarly journals Performance optimization of the air shower simulation program for the Cherenkov Telescope Array

2019 ◽  
Vol 214 ◽  
pp. 05041 ◽  
Author(s):  
Luisa Arrabito ◽  
Konrad Bernlöhr ◽  
Johan Bregeon ◽  
Gernot Maier ◽  
Philippe Langlois ◽  
...  
Keyword(s):  
Performance Optimization ◽  
Gamma Ray ◽  
Cosmic Ray ◽  
High Energy ◽  
Telescope Array ◽  
Cherenkov Telescope ◽  
Cpu Time ◽  
Very High Energy ◽  
Under Construction ◽  
Very High

The Cherenkov Telescope Array (CTA), currently under construction, is the next-generation instrument in the field of very high energy gamma-ray astronomy. The first data are expected by the end of 2018, while the scientific operations will start in 2022 for a duration of about 30 years. In order to characterize the instrument response to the Cherenkov light emitted when cosmic ray showers develop in the atmosphere, detailed Monte Carlo simulations will be regularly performed in parallel to CTA operation. The estimated CPU time associated to these simulations is very high, of the order of 200 millions HS06 hours per year. Reducing the CPU time devoted to simulations would allow either to reduce infrastructure cost or to better cover the large phase space. In this paper, we focus on the main computing step (70% of the whole CPU time) implemented in the CORSIKA program, and specifically on the mod-ule responsible for the propagation of Cherenkov photons in the atmosphere. We present our preliminary studies about different options of code optimization, with a particular focus on vectorization facilities (SIMD instructions). Our proposals take care, as automatically as possible, of the hardware portability constraints introduced by the grid computing environment that hosts these simulations. Performance evaluation in terms of running-time and accuracy is provided.

scholarly journals Supernova remnants in the very–high–energy gamma-ray domain: the role of the Cherenkov telescope array

2017 ◽  
Vol 471 (1) ◽  
pp. 201-209 ◽  
Author(s):  
P. Cristofari ◽  
S. Gabici ◽  
T. B. Humensky ◽  
M. Santander ◽  
R. Terrier ◽  
...  
Keyword(s):  
Supernova Remnants ◽  
Gamma Ray ◽  
High Energy ◽  
Telescope Array ◽  
Cherenkov Telescope ◽  
High Energy Gamma ◽  
Very High Energy ◽  
Energy Gamma ◽  
Very High

scholarly journals Prospects for the characterization of the VHE emission from the Crab nebula and pulsar with the Cherenkov Telescope Array

2019 ◽  
Vol 492 (1) ◽  
pp. 708-718 ◽  
Author(s):  
E Mestre ◽  
E de Oña Wilhelmi ◽  
R Zanin ◽  
D F Torres ◽  
L Tibaldo
Keyword(s):  
Gamma Ray ◽  
Crab Nebula ◽  
High Energy ◽  
Telescope Array ◽  
Cherenkov Telescope ◽  
Enhanced Sensitivity ◽  
Future Data ◽  
Very High Energy ◽  
Hydrodynamical Simulations ◽  
The Crab Nebula

ABSTRACT The Cherenkov Telescope Array (CTA) will be the next generation instrument for the very high energy gamma-ray astrophysics domain. With its enhanced sensitivity in comparison with the current facilities, CTA is expected to shed light on a varied population of sources. In particular, we will achieve a deeper knowledge of the Crab nebula and pulsar, which are the best characterized pulsar wind nebula and rotation powered pulsar, respectively. We aim at studying the capabilities of CTA regarding these objects through simulations, using the main tools currently in development for the CTA future data analysis: gammapy and ctools. We conclude that, even using conservative Instrument Response Functions, CTA will be able to resolve many uncertainties regarding the spectrum and morphology of the pulsar and its nebula. The large energy range covered by CTA will allow us to disentangle the nebula spectral shape among different hypotheses, corresponding to different underlying emitting mechanisms. In addition, resolving internal structures (smaller than ∼0.02° in size) in the nebula and unveiling their location, would provide crucial information about the propagation of particles in the magnetized medium. We used a theoretical asymmetric model to characterize the morphology of the nebula and we showed that if predictions of such morphology exist, for instance as a result of hydrodynamical or magneto-hydrodynamical simulations, it can be directly compared with CTA results. We also tested the capability of CTA to detect periodic radiation from the Crab pulsar obtaining a precise measurement of different light curves shapes.

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