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Ground based gamma-ray observations with Imaging Atmospheric Cherenkov Telescopes (IACTs) play a significant role in the discovery of very high energy (E > 100 GeV) gamma-ray emitters. The analysis of IACT data demands a highly efficient…

Imaging atmospheric Cherenkov telescope (IACT) arrays record images from air showers initiated by gamma rays entering the atmosphere, allowing astrophysical sources to be observed at very high energies. To maximize IACT sensitivity,…

天体物理仪器与方法 · 物理学 2020-01-13 Aryeh Brill , Qi Feng , T. Brian Humensky , Bryan Kim , Daniel Nieto , Tjark Miener

The identification of $\gamma$-rays from the predominant hadronic-background is a key aspect in their ground-based detection using Imaging Atmospheric Cherenkov Telescopes (IACTs). While current methods are limited in their ability to…

高能天体物理现象 · 物理学 2025-10-08 Abhay Mehta , Dan Parsons , Tim Lukas Holch , David Berge , Matthias Weidlich

Imaging atmospheric Cherenkov telescopes (IACTs) detect extended air showers (EASs) generated when very-high-energy (VHE) gamma rays or cosmic rays interact with the Earth's atmosphere. Cherenkov photons produced during an EAS are captured…

高能天体物理现象 · 物理学 2025-09-19 T. Miener , L. Burmistrov , B. Lacave , A. Cerviño

New deep learning techniques present promising new analysis methods for Imaging Atmospheric Cherenkov Telescopes (IACTs) such as the upcoming Cherenkov Telescope Array (CTA). In particular, the use of Convolutional Neural Networks (CNNs)…

天体物理仪器与方法 · 物理学 2021-03-31 Samuel Spencer , Thomas Armstrong , Jason Watson , Salvatore Mangano , Yves Renier , Garret Cotter

When very-high-energy gamma rays interact high in the Earth's atmosphere, they produce cascades of particles that induce flashes of Cherenkov light. Imaging Atmospheric Cherenkov Telescopes (IACTs) detect these flashes and convert them into…

天体物理仪器与方法 · 物理学 2021-09-30 Pietro Grespan , Mikael Jacquemont , Rubèn López-Coto , Tjark Miener , Daniel Nieto-Castaño , Thomas Vuillaume

Arrays of imaging atmospheric Cherenkov telescopes (IACT) are superb instruments to probe the very-high-energy gamma-ray sky. This type of telescope focuses the Cherenkov light emitted from air showers, initiated by very-high-energy gamma…

天体物理仪器与方法 · 物理学 2021-01-20 D. Nieto , T. Miener , A. Brill , J. L. Contreras , T. B. Humensky , R. Mukherjee

CNNs and computational models of biological vision share some fundamental principles, which opened new avenues of research. However, fruitful cross-field research is hampered by conventional CNN architectures being based on spatially and…

计算机视觉与模式识别 · 计算机科学 2024-02-05 Nergis Tomen , Silvia L. Pintea , Jan C. van Gemert

A dramatic progress in the field of computer vision has been made in recent years by applying deep learning techniques. State-of-the-art performance in image recognition is thereby reached with Convolutional Neural Networks (CNNs). CNNs are…

The Major Atmospheric Gamma Imaging Cherenkov (MAGIC) telescope system consists of two imaging atmospheric Cherenkov telescopes (IACTs) and is located on the Canary island of La Palma. IACTs are excellent tools to inspect the…

天体物理仪器与方法 · 物理学 2021-12-06 T. Miener , R. López-Coto , J. L. Contreras , J. G. Green , D. Green , E. Mariotti , D. Nieto , L. Romanato , S. Yadav

Imaging 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…

天体物理仪器与方法 · 物理学 2017-06-14 Qi Feng , Tony T. Y. Lin

The Cherenkov Telescope Array Observatory (CTAO), a next-generation ground-based gamma-ray observatory, will be composed of two arrays of multiple imaging atmospheric Cherenkov telescopes (IACTs) located in both the Northern and Southern…

高能天体物理现象 · 物理学 2025-09-19 T. Miener , I. Viale , B. Lacave , A. Cerviño

The Cherenkov Telescope Array (CTA), conceived as an array of tens of imaging atmospheric Cherenkov telescopes (IACTs), is an international project for a next-generation ground-based gamma-ray observatory, aiming to improve on the…

天体物理仪器与方法 · 物理学 2021-09-14 Tjark Miener , Daniel Nieto , Aryeh Brill , Samuel Spencer , Jose Luis Contreras

With the rapid advancements in digital imaging systems and networking, low-cost hand-held image capture devices equipped with network connectivity are becoming ubiquitous. This ease of digital image capture and sharing is also accompanied…

多媒体 · 计算机科学 2019-06-20 Vinay Verma , Nikita Agarwal , Nitin Khanna

Deep learning methods have been shown to be effective in representing ground-state wave functions of quantum many-body systems. Existing methods use convolutional neural networks (CNNs) for square lattices due to their image-like…

量子物理 · 物理学 2022-06-16 Cong Fu , Xuan Zhang , Huixin Zhang , Hongyi Ling , Shenglong Xu , Shuiwang Ji

Commercial iterative reconstruction techniques on modern CT scanners target radiation dose reduction but there are lingering concerns over their impact on image appearance and low contrast detectability. Recently, machine learning,…

计算机视觉与模式识别 · 计算机科学 2019-07-16 Hongming Shan , Atul Padole , Fatemeh Homayounieh , Uwe Kruger , Ruhani Doda Khera , Chayanin Nitiwarangkul , Mannudeep K. Kalra , Ge Wang

Imaging Air Cherenkov Telescopes (IACTs) are essential to ground-based observations of gamma rays in the GeV to TeV regime. One particular challenge of ground-based gamma-ray astronomy is an effective rejection of the hadronic background.…

天体物理仪器与方法 · 物理学 2023-11-08 Jonas Glombitza , Vikas Joshi , Benedetta Bruno , Stefan Funk

Object detection in challenging situations such as scale variation, occlusion, and truncation depends not only on feature details but also on contextual information. Most previous networks emphasize too much on detailed feature extraction…

计算机视觉与模式识别 · 计算机科学 2018-09-07 Wenchi Ma , Yuanwei Wu , Zongbo Wang , Guanghui Wang

Convolutional Neural Network (CNN) has demonstrated impressive ability to represent hyperspectral images and to achieve promising results in hyperspectral image classification. However, traditional CNN models can only operate convolution on…

图像与视频处理 · 电气工程与系统科学 2019-05-16 Sheng Wan , Chen Gong , Ping Zhong , Bo Du , Lefei Zhang , Jian Yang

Modern detectors of cosmic gamma-rays are a special type of imaging telescopes (air Cherenkov telescopes) supplied with cameras with a relatively large number of photomultiplier-based pixels. For example, the camera of the TAIGA-IACT…

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