Results 31 to 40 of about 990 (196)

Observations of extragalactic sources with the MAGIC telescope [PDF]

open access: yesAstrophysics and Space Science, 2007
MAGIC is currently the world's largest single dish ground based imaging atmospheric Cherenkov telescope. During the first year of operation, more than 20 extragalactic sources have been observed and several of them detected. Here we present results of analyzed data, including discussion about spectral and temporal properties of the detected sources. In
D. MAZIN   +2 more
openaire   +4 more sources

The Galactic Center Region Imaged by VERITAS from 2010{2012

open access: yesActa Polytechnica CTU Proceedings, 2014
The galactic center has long been a region of interest for high-energy and very-high-energy observations. Many potential sources of GeV/TeV gamma-ray emission are located in this region, e.g.
Matthias Beilicke
doaj   +1 more source

Follow-up observations of GW170817 with the MAGIC telescopes [PDF]

open access: yesProceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021), 2021
The discovery of the electromagnetic counterpart AT2017gfo and the GRB 170817A, associated to the binary neutron star merger GW170817, was one of the major advances in the study of gamma- ray bursts (GRBs) and the hallmark of the multi-messenger astronomy with gravitational waves.
Antonio Stamerra   +199 more
openaire   +8 more sources

Characterisation of the Atmosphere in Very High Energy Gamma-Astronomy for Imaging Atmospheric Cherenkov Telescopes

open access: yesUniverse
Ground-based observations of Very High Energy (VHE) gamma rays from extreme astrophysical sources are significantly influenced by atmospheric conditions.
Dijana Dominis Prester   +10 more
doaj   +1 more source

Galactic Center Observations with CTAO LST-1 [PDF]

open access: yesEPJ Web of Conferences
Very-high-energy gamma-ray observations of the central part of the Milky Way Galaxy allow for morphological study of cosmic-ray propagation around the supermassive black hole Sgr A*. An interpretation of the diffuse gamma-ray component, which spans a few
Abe Shotaro   +6 more
doaj   +1 more source

Broadband Multi-wavelength Properties of M87 during the 2017 Event Horizon Telescope Campaign

open access: yesThe Astrophysical Journal Letters, 2021
In 2017, the Event Horizon Telescope (EHT) Collaboration succeeded in capturing the first direct image of the center of the M87 galaxy. The asymmetric ring morphology and size are consistent with theoretical expectations for a weakly accreting ...
The EHT MWL Science Working Group   +745 more
doaj   +1 more source

Light travel time effects in blazar flares

open access: yesFrontiers in Astronomy and Space Sciences
In this study, a model for light travel time effects for emission from a plasma blob in a blazar jet is presented. This calculation could be incorporated into more complex models with particle acceleration and radiation mechanisms, but as presented here,
Justin D. Finke
doaj   +1 more source

The ASTRI mini-array within the future Cherenkov Telescope Array

open access: yesEPJ Web of Conferences, 2016
The Cherenkov Telescope Array (CTA) is a large collaborative effort aimed at the design and operation of an observatory dedicated to very high-energy gamma-ray astrophysics in the energy range from a few tens of GeV to above 100 TeV, which will yield ...
Vercellone Stefano
doaj   +1 more source

Study of Angular Resolution Using Imaging Atmospheric Cherenkov Technique

open access: yesUniverse
Angular resolution is crucial for the detailed study of gamma-ray sources and current Cherenkov telescopes (e.g., HESS, MAGIC, and VERITAS) that operate below tens of TeV.
Jinrui Liu   +6 more
doaj   +1 more source

Atmospheric Monitoring for the MAGIC Telescopes

open access: yes, 2014
The monitoring of the atmosphere is very relevant for Imaging Atmospheric Cherenkov Telescopes. Adverse weather conditions (strong wind, high humidity, etc.) may damage the telescopes and must therefore be monitored continuously to guarantee a safe operation, and the presence of clouds and aerosols affects the transmission of the Cherenkov light and ...
Gaug, M.   +15 more
openaire   +3 more sources

Home - About - Disclaimer - Privacy