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We present a stacking method that makes use of co-added maps of gamma-ray counts produced from data taken with the Fermi Large Area Telescope. Sources with low integrated gamma-ray fluxes that are not detected individually may become…

Instrumentation and Methods for Astrophysics · Physics 2015-06-11 B. Huber , C. Farnier , A. Manalaysay , U. Straumann , R. Walter

Several types of binary systems have been detected up to now at high and very high gamma-ray energies, including microquasars, young pulsars around massive stars and colliding wind binaries. The study of the sources already known, and of…

The rise of direct detection of gravitational waves (GWs) started a new era in multi-messenger astrophysics. Like GWs, many other astrophysical transient sources suffer from poor localization, which can span tens to thousands of square…

Instrumentation and Methods for Astrophysics · Physics 2025-08-12 Halim Ashkar , Monica Seglar-Arroyo , Fabian Schüssler , Weizmann Kiendrébéogo , Mathieu de Bony de Lavergne

AsaPy is a custom-made Python library designed to simplify and optimize the analysis of aerospace simulation data. Instead of introducing new methodologies, it excels in combining various established techniques, creating a unified,…

The Cherenkov Telescope Array (CTA) is the next-generation ground-based observatory for very-high energy gamma-ray astronomy. CTA will have unparalleled sensitivity and angular resolution and will detect gamma-ray sources nearly 100 times…

Instrumentation and Methods for Astrophysics · Physics 2022-09-07 Leslie Taylor

The SunPy Project is a community of scientists and software developers creating an ecosystem of Python packages for solar physics. The project includes the sunpy core package as well as a set of affiliated packages. The sunpy core package…

We study the prospects for studying line features in gamma-ray spectra with upcoming gamma-ray experiments, such as HESS-II, the Cherenkov Telescope Array (CTA), and the GAMMA-400 satellite. As an example we use the narrow feature at 130…

High Energy Physics - Phenomenology · Physics 2015-06-05 Lars Bergström , Gianfranco Bertone , Jan Conrad , Christian Farnier , Christoph Weniger

The Gamma-Ray Energy Tracking Array (GRETA) is a next-generation gamma-ray spectrometer designed to push the frontiers of nuclear structure and astrophysics experiment. Its high sensitivity is enabled by high-precision localization of…

Instrumentation and Detectors · Physics 2025-12-16 Arin Manohar , Mario Cromaz , Christopher Campbell , Heather Crawford , Marco Salathe

The increasing volume of gamma-ray data demands new analysis approaches that can handle large-scale datasets while providing robustness for source detection. We present a Deep Learning (DL) based pipeline for detection, localization, and…

We outline the science prospects for gamma-ray bursts (GRBs) with the Cherenkov Telescope Array (CTA), the next-generation ground-based gamma-ray observatory operating at energies above few tens of GeV. With its low energy threshold, large…

The Cherenkov Telescope Array (CTA) is a major ground-based observatory proposed for gamma-ray astronomy. CTA is envisioned to consist of two large arrays of atmospheric Cherenkov telescopes for the study of sources of high-energy gamma…

Instrumentation and Methods for Astrophysics · Physics 2019-08-14 R. A. Ong , T. Aune , J. Hall

COsmic Ray SImulations for KAscade) is a program for detailed simulation of extensive air showers initiated by high energy cosmic ray particles in the atmosphere, and is used today by almost all the major instruments that aim at measuring…

Instrumentation and Methods for Astrophysics · Physics 2020-06-29 Luisa Arrabito , Konrad Bernlöhr , Johan Bregeon , Matthieu Carrère , Adnane Khattabi , Philippe Langlois , David Parello , Guillaume Revy

The Cherenkov Telescope Array (CTA) will be the next high-energy gamma-ray observatory. Selection of the sites, one in each hemisphere, is not obvious since several factors have to be taken into account. Among them, and probably the most…

Instrumentation and Methods for Astrophysics · Physics 2013-02-06 K. Louedec , M. Will

The Flat Spectrum Radio Quasar OP~313 entered an enhanced activity phase in November 2023 and has undergone multiple flares since then which have motivated the organisation of several large multi-wavelength campaigns, including two deep…

High Energy Astrophysical Phenomena · Physics 2025-01-29 M. Nievas Rosillo , F. Acero , J. Otero-Santos , M. Vazquez Acosta , R. Terrier , D. Morcuende , A. Arbet-Engels

Automated searches for strong gravitational lensing in optical imaging survey datasets often employ machine learning and deep learning approaches. These techniques require more example systems to train the algorithms than have presently…

Instrumentation and Methods for Astrophysics · Physics 2021-02-08 Robert Morgan , Brian Nord , Simon Birrer , Joshua Yao-Yu Lin , Jason Poh

Composite mirrors for gamma-ray astronomy have been developed to fulfill the specifications required for the next generation of Cherenkov telescopes represented by CTA (Cherenkov Telescope Array). In addition to the basic requirements on…

Instrumentation and Methods for Astrophysics · Physics 2015-06-12 P. Brun , P. -H. Carton , D. Durand , J-F. Glicenstein , C. Jeanney , M. C. Medina , P. Micolon , B. Peyaud

The Cherenkov Telescope Array (CTA) is the next generation of Imaging Atmospheric Cherenkov Telescopes. It will reach a sensitivity and energy resolution never obtained until now by any other high energy gamma-ray experiment. Understanding…

Instrumentation and Methods for Astrophysics · Physics 2018-01-22 G. Vasileiadis , O. Blanch , J. Bregeon , P. Brun , O. Calpe , M. Colak , M. Doro , L. Font , M. Gaug , S. Griffiths , C. Maggio , M. Martinez , O. Martinez , P. Ristori , S. Rivoire

The Cherenkov Telescope Array (CTA) is an international project for a next-generation ground-based gamma-ray observatory. CTA, conceived as an array of tens of imaging atmospheric Cherenkov telescopes, comprising small, medium and…

Instrumentation and Methods for Astrophysics · Physics 2019-08-14 T. Hassan , B. Humensky , D. Nieto , M. Wood

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…

Astrophysics · Physics 2019-08-13 M. K. Daniel

This paper presents the simulation of the GLAST high energy gamma-ray telescope. The simulation package, written in C++, is based on the Geant4 toolkit, and it is integrated into a general framework used to process events. A detailed…