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Relevant bibliographies by topics / IACT Analysis

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Journal articles

Academic literature on the topic 'IACT Analysis'

Author: Grafiati

Published: 14 March 2023

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Journal articles on the topic "IACT Analysis"

1

Feng, Qi, and Tony T. Y. Lin. "The analysis of VERITAS muon images using convolutional neural networks." Proceedings of the International Astronomical Union 12, S325 (2016): 173–79. http://dx.doi.org/10.1017/s1743921316012734.

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AbstractImaging atmospheric Cherenkov telescopes (IACTs) are sensitive to rare gamma-ray photons, buried in the background of charged cosmic-ray (CR) particles, the flux of which is several orders of magnitude greater. The ability to separate gamma rays from CR particles is important, as it is directly related to the sensitivity of the instrument. This gamma-ray/CR-particle classification problem in IACT data analysis can be treated with the rapidly-advancing machine learning algorithms, which have the potential to outperform the traditional box-cut methods on image parameters. We present prel

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Geng, Fu Quan, Zhi Gang Huang, Xuan Jie Ning, and Mao Fan Yang. "A Joint Improved Irregular Accumulate Concatenated Tree Coding and Frequency Hopping OFDM Modulation Scheme for Wireless Networks." Advanced Materials Research 902 (February 2014): 364–69. http://dx.doi.org/10.4028/www.scientific.net/amr.902.364.

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Joint channel coding and spread spectrum modulation technologies bring to wireless networks the tremendous amount of performance improvement, the elimination, and the mitigation of interference. This paper proposes an improved design for irregular accumulate concatenated tree (IACT) codes, which can be viewed as simply precoded by an accumulator. This class of codes belongs to the special turbo-like codes, which combines the advantages of fast encoder structures of turbo codes, and the advantages of parallel high-speed belief-propagation (BP) iterative decoding algorithm of low-density parity-

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Fiasson, A., F. Dubois, G. Lamanna, J. Masbou, and S. Rosier-Lees. "Optimization of multivariate analysis for IACT stereoscopic systems." Astroparticle Physics 34, no. 1 (2010): 25–32. http://dx.doi.org/10.1016/j.astropartphys.2010.04.006.

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Mohrmann, L., A. Specovius, D. Tiziani та ін. "Validation of open-source science tools and background model construction in γ-ray astronomy". Astronomy & Astrophysics 632 (грудень 2019): A72. http://dx.doi.org/10.1051/0004-6361/201936452.

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In classical analyses of γ-ray data from imaging atmospheric Cherenkov telescopes (IACTs), such as the High Energy Stereoscopic System (H.E.S.S.), aperture photometry, or photon counting, is applied in a (typically circular) region of interest (RoI) encompassing the source. A key element in the analysis is to estimate the amount of background in the RoI due to residual cosmic ray-induced air showers in the data. Various standard background estimation techniques have been developed in the last decades, most of them rely on a measurement of the background from source-free regions within the obse

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Albert, A., R. Alfaro, C. Alvarez та ін. "Detailed Analysis of the TeV γ-Ray Sources 3HWC J1928+178, 3HWC J1930+188, and the New Source HAWC J1932+192". Astrophysical Journal 942, № 2 (2023): 96. http://dx.doi.org/10.3847/1538-4357/ac8de3.

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Abstract The latest High Altitude Water Cherenkov (HAWC) point-like source catalog up to 56 TeV reported the detection of two sources in the region of the Galactic plane at galactic longitude 52° < ℓ < 55°, 3HWC J1930+188 and 3HWC J1928+178. The first one is associated with a known TeV source, the supernova remnant SNR G054.1+00.3. It was discovered by one of the currently operating Imaging Atmospheric Cherenkov Telescope (IACT), the Very Energetic Radiation Imaging Telescope Array System (VERITAS), detected by the High Energy Stereoscopic System (H.E.S.S), and identified as a composite

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Vovk, I., M. Strzys, and C. Fruck. "Spatial likelihood analysis for MAGIC telescope data." Astronomy & Astrophysics 619 (November 2018): A7. http://dx.doi.org/10.1051/0004-6361/201833139.

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Context. The increase in sensitivity of Imaging Atmospheric Cherenkov Telescopes (IACTs) has lead to numerous detections of extended γ-ray sources at TeV energies, sometimes of sizes comparable to the instrument’s field of view. This creates a demand for advanced and flexible data analysis methods that are able to extract source information using the photon counts in the entire field of view. Aims. We present a new software package, “SkyPrism”, aimed at performing 2D (3D if energy is considered) fits of IACT data that possibly contain multiple and extended sources. The fits are based on sky im

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Ivanova, A. L., R. Monkhoev, I. Astapov, et al. "Tunka-Grande scintillation array: resent results." Journal of Physics: Conference Series 2156, no. 1 (2021): 012196. http://dx.doi.org/10.1088/1742-6596/2156/1/012196.

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Abstract Objectives of the TAIGA Astrophysical complex include the study of the flux of charged cosmic rays and diffuse gamma rays with energies above 100 TeV. This complex is located in the Tunka Valley about 50 km from Lake Baikal at the site of the Tunka-133 Cherenkov facility. TAIGA includes the TAIGA-HiSCORE wide-angle Cherenkov array, the network of Imaging Atmospheric Cherenkov Telescopes (TAIGA-IACT), the Tunka-Grande and TAIGA-Muon scintillation arrays. In this work, we present the results of an analysis of the joint events of the Tunka-Grande scintillation array and TAIGA-HiSCORE and

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BARTKO, H. "OBSERVATION OF GALACTIC SOURCES OF VERY HIGH ENERGY γ-RAYS WITH THE MAGIC TELESCOPE". Modern Physics Letters A 22, № 29 (2007): 2167–74. http://dx.doi.org/10.1142/s0217732307024309.

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The MAGIC telescope with its 17m diameter mirror is today the largest operating single-dish Imaging Air Cherenkov Telescope (IACT). It is located on the Canary Island La Palma, at an altitude of 2200 m above sea level, as part of the Roque de los Muchachos European Northern Observatory. The MAGIC telescope detects celestial very high energy γ-radiation in the energy band between about 50 GeV and 10 TeV. Since the autumn of 2004 MAGIC has been taking data routinely, observing various objects, like supernova remnants (SNRs), γ-ray binaries, Pulsars, Active Galactic Nuclei (AGN) and Gamma-ray Bur

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Ikrama, Syeda. "An Empirical Study on the Performance of Micro and Small Enterprises and the Financial Planning Managerial Practices." SEDME (Small Enterprises Development, Management & Extension Journal): A worldwide window on MSME Studies 46, no. 4 (2019): 248–55. http://dx.doi.org/10.1177/0970846419894755.

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This research paper is intended to study the performance of micro and small enterprises and the financial planning practices adopted by these enterprises. Financial planning means enabling the enterprise to have the right amount of capital in order that the business operations would not get affected. The businesses must first ascertain the financial objectives of the firm to formulate the policies relating to borrowing and lending, cash control, cash management, inventory management, and credit risk management and other financial activities. The present study is an analytical study and a rando

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López-Coto, Rubén, Juan Cortina та Abelardo Moralejo. "MACHETE: A transit Imaging Atmospheric Cherenkov Telescope to survey half of the Very High Energy γ-ray sky". Proceedings of the International Astronomical Union 11, A29A (2015): 345–46. http://dx.doi.org/10.1017/s1743921316003240.

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AbstractCurrent Cherenkov Telescopes for VHE gamma ray astrophysics are pointing instruments with a field of view up to a few tens of deg2. We propose to build an array of two non-steerable telescopes with a FoV of 5×60 deg2 oriented along the meridian. Roughly half of the sky drifts through this FoV in a year. We have performed a MC simulation to estimate the performance of this instrument, which we dub MACHETE. The sensitivity that MACHETE would achieve after 5 years of operation for every source in this half of the sky is comparable to the sensitivity that a current IACT achieves for a spec

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