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The High Altitude Water Cherenkov (HAWC) gamma-ray observatory observes atmospheric showers produced by incident gamma rays and cosmic rays with energy from 300 GeV to more than 100 TeV. A crucial phase in analyzing gamma-ray sources using…

高能天体物理现象 · 物理学 2022-08-25 R. Alfaro , C. Alvarez , J. D. Álvarez , J. R. Angeles Camacho , J. C. Arteaga-Velázquez , D. Avila Rojas , H. A. Ayala Solares , R. Babu , E. Belmont-Moreno , C. Brisbois , K. S. Caballero-Mora , T. Capistrán , A. Carramiñana , S. Casanova , O. Chaparro-Amaro , U. Cotti , J. Cotzomi , S. Coutiño de León , E. De la Fuente , C. de León , R. Diaz Hernandez , B. L. Dingus , M. A. DuVernois , M. Durocher , J. C. Díaz-Vélez , R. W. Ellsworth , K. Engel , C. Espinoza , K. L. Fan , M. Fernández Alonso , N. Fraija , D. Garcia , J. A. García-González , F. Garfias , M. M. González , J. A. Goodman , J. P. Harding , S. Hernandez , B. Hona , D. Huang , F. Hueyotl-Zahuantitla , P. Hüntemeyer , A. Iriarte , A. Jardin-Blicq , V. Joshi , S. Kaufmann , G. J. Kundem A. Lara , W. H. Lee , J. Lee , H. León Vargas , J. T. Linnemann , G. Luis-Raya , J. Lundeen , K. Malone , V. Marandon , O. Martinez , J. Martínez-Castro , J. A. Matthews , P. Miranda-Romagnoli , J. A. Morales-Soto , A. Nayerhoda , L. Nellen , M. U. Nisa , R. Noriega-Papaqui , L. Olivera-Nieto , N. Omodei , A. Peisker , Y. Pérez Araujo , E. G. Pérez-Pérez , C. D. Rho , D. Rosa-González , E. Ruiz-Velasco , H. Salazar , F. Salesa Greus , A. Sandoval , P. M. Saz Parkinson , J. Serna-Franco , A. J. Smith , R. W. Springer , O. Tibolla , K. Tollefson , I. Torres , R. Torres-Escobedo , R. Turner , F. Ureña-Mena , L. Villaseñor , X. Wang , I. J. Watson , F. Werner , E. Willox , J. Wood , A. Zepeda , H. Zhou

The problem of anomaly detection in astronomical surveys is becoming increasingly important as data sets grow in size. We present the results of an unsupervised anomaly detection method using a Wasserstein generative adversarial network…

In this paper, we present the results of Monte Carlo simulations of atmospheric showers induced by diffuse gamma rays as detected by the high-energy gamma ray astronomy (HEGRA) system of five imaging atmospheric Cerenkov telescopes (IACTs).…

天体物理学 · 物理学 2008-11-26 A. Konopelko , F. Lucarelli , H. Lampeitl , W. Hofmann

In many domains of computer vision, generative adversarial networks (GANs) have achieved great success, among which the family of Wasserstein GANs (WGANs) is considered to be state-of-the-art due to the theoretical contributions and…

计算机视觉与模式识别 · 计算机科学 2018-09-06 Jiqing Wu , Zhiwu Huang , Janine Thoma , Dinesh Acharya , Luc Van Gool

A new method of shower-image analysis is presented which appears very powerful as applied to those Cherenkov Imaging Telescopes with very high definition imaging capability. It provides hadron rejection on the basis of a single cut on the…

The Very Energetic Radiation Imaging Telescope Array System (VERITAS) represents an important step forward in the study of extreme astrophysical processes in the universe. It combines the power of the atmospheric Cherenkov imaging technique…

天体物理学 · 物理学 2008-11-26 T. C. Weekes

Highly reliable Monte-Carlo event generators and detector simulation programs are important for the precision measurement in the high energy physics. Huge amounts of computing resources are required to produce a sufficient number of…

高能物理 - 实验 · 物理学 2021-02-24 Suyong Choi , Jae Hoon Lim

Imaging atmospheric Cherenkov telescopes, such as the Very Energetic Radiation Imaging Tele-scope Array System (VERITAS), are uniquely suited to resolve the detailed morphology ofextended regions of gamma-ray emission. However, standard…

天体物理仪器与方法 · 物理学 2021-08-18 B. Hona , for the VERITAS Collaboration

It has been established that Gamma-Ray Bursts (GRB) can produce Very High Energy radiation (E > 100 GeV), opening a new window on the investigation of particle acceleration and radiation properties in the most energetic domain. We expect…

天体物理仪器与方法 · 物理学 2021-08-03 G. La Mura

Telescopes based on the imaging atmospheric Cherenkov technique (IACTs) detect images of the atmospheric showers generated by gamma rays and cosmic rays as they are absorbed by the atmosphere. The much more frequent cosmic-ray events form…

天体物理仪器与方法 · 物理学 2019-08-14 D. Nieto , A. Brill , B. Kim , T. B. Humensky

Generative modeling over natural images is one of the most fundamental machine learning problems. However, few modern generative models, including Wasserstein Generative Adversarial Nets (WGANs), are studied on manifold-valued images that…

计算机视觉与模式识别 · 计算机科学 2019-01-04 Zhiwu Huang , Jiqing Wu , Luc Van Gool

The development of the atmospheric Cherenkov imaging technique has led to significant advances in gamma-ray detection sensitivity in the energy range from 200 GeV to 50 TeV. The Whipple Observatory 10m reflector has detected the first…

天体物理学 · 物理学 2007-05-23 T. C. Weekes

VERITAS is an array of Imaging Atmospheric Cherenkov Telescopes designed for very high energy gamma ray (E>100,GeV) observations of astrophysical sources. The experiment began its scientific observation program in the 2006/2007 observing…

天体物理学 · 物理学 2019-08-13 M. K. Daniel

In the atmospheric Cerenkov technique gamma rays are detected against the abundant background produced by hadronic showers. In order to improve the signal to noise ratio of the experiment, it is necessary to reject a significant fraction of…

天体物理学 · 物理学 2011-08-17 V. R. Chitnis , P. N. Bhat

Imaging atmospheric Cherenkov telescopes record an enormous number of cosmic-ray background events. Suppressing these background events while retaining $\gamma$-rays is key to achieving good sensitivity to faint $\gamma$-ray sources. The…

天体物理仪器与方法 · 物理学 2017-01-25 Maria Krause , Elisa Pueschel , Gernot Maier

One of the main challenges in the parametrization of geological models is the ability to capture complex geological structures often observed in the subsurface. In recent years, generative adversarial networks (GAN) were proposed as an…

机器学习 · 统计学 2019-04-10 Shing Chan , Ahmed H. Elsheikh

At present, the ground-based astronomy of very high energy (VHE) (E>100 GeV) gamma-rays experiences the challenging transition phase caused by the substantial upgrading of its observational instrumentation. Recently the HEGRA collaboration…

天体物理学 · 物理学 2008-11-26 Alexander K Konopelko

Imaging Air Cherenkov Telescopes (IACTs) detect the Cherenkov light flashes of Extended Air Showers (EAS) triggered by very high energy (VHE) gamma-rays impinging on the Earth's atmosphere. Due to the overwhelming background from hadron…

天体物理学 · 物理学 2008-02-06 S. C. Commichau , A. Biland , D. Kranich , R. de los Reyes , A. Moralejo , D. Sobczynska

Generative Adversarial Networks (GANs) are one of the most practical methods for learning data distributions. A popular GAN formulation is based on the use of Wasserstein distance as a metric between probability distributions.…

机器学习 · 计算机科学 2018-05-23 Maziar Sanjabi , Jimmy Ba , Meisam Razaviyayn , Jason D. Lee