Lucas Gréaux
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View article: Variability studies of active galactic nuclei from the long-term monitoring program with the Cherenkov Telescope Array
Variability studies of active galactic nuclei from the long-term monitoring program with the Cherenkov Telescope Array Open
Blazars are active galactic nuclei (AGN) with a relativistic jet oriented toward the observer. This jet is composed of accelerated particles which can display emission over the entire electromagnetic spectrum. Spectral variability has been…
View article: A gamma-ray perspective on the cosmological optical controversy
A gamma-ray perspective on the cosmological optical controversy Open
Background optical and infrared photon fields can interact with very high-energy (VHE, E > 100 GeV) gamma-rays propagating through the universe.\nAbsorption patterns induced in the VHE spectra of extragalactic sources can be studied to rec…
View article: STeVECat, the Spectral TeV Extragalactic Catalog
STeVECat, the Spectral TeV Extragalactic Catalog Open
The Whipple Observatory's discovery of extragalactic TeV photons from Markarian 421 in 1992 marked the beginning of extragalactic gamma-ray astronomy at very high-energy (VHE, E > 100 GeV).\nThree decades later, both the number of detected…
View article: Variability studies of active galactic nuclei from the long-term monitoring program with the Cherenkov Telescope Array
Variability studies of active galactic nuclei from the long-term monitoring program with the Cherenkov Telescope Array Open
Blazars are active galactic nuclei (AGN) with a relativistic jet oriented\ntoward the observer. This jet is composed of accelerated particles which can\ndisplay emission over the entire electromagnetic spectrum. Spectral variability\nhas b…
View article: Gammapy: Python toolbox for gamma-ray astronomy
Gammapy: Python toolbox for gamma-ray astronomy Open
Gammapy analyzes gamma-ray data and creates sky images, spectra and lightcurves, from event lists and instrument response information; it can also determine the position, morphology and spectra of gamma-ray sources. It is used to analyze d…
View article: STeVECat, the Spectral TeV Extragalactic Catalog
STeVECat, the Spectral TeV Extragalactic Catalog Open
International audience
View article: STeVECat, the Spectral TeV Extragalactic Catalog
STeVECat, the Spectral TeV Extragalactic Catalog Open
The three main collaborations operating the current generation of imaging atmospheric Cherenkov telescopes (IACTs: H.E.S.S., MAGIC, VERITAS) publish their gamma-ray data in different formats and repositories. Extragalactic sources are high…