Results 11 to 20 of about 59,762 (195)

Cosmic Ray Astrophysics using The High Altitude Water Cherenkov (HAWC) Observatory in México

EPJ Web of Conferences, 2017
The High-Altitude Water Cherenkov (HAWC) TeV gamma–ray Observatory in México is ready to search and study gamma-ray emission regions, extremely high-energy cosmic-ray sources, and to identify transient phenomena.
de la Fuente Eduardo, Díaz–Vélez Juan Carlos, Almada Alberto Hernández, Nigoche–Netro Alberto   +3 more
doaj   +2 more sources

(Very)-high-energy gamma-ray astrophysics: The future

EPJ Web of Conferences, 2016
Several projects planned or proposed can significantly expand our knowledge of the high-energy Universe in gamma rays. Construction of the Cherenkov telescope array CTA is started, and other detectors are planned which will use the reconstruction of ...
Angelis Alessandro De
doaj   +1 more source

Astrophysics Without Black Holes, and Without Extragalactic Gamma-Ray Bursts

Acta Polytechnica CTU Proceedings, 2014
Contrary to common belief, it is argued that our Universe contains neither Black Holes, nor Extracalactic Gamma-Ray Bursts.
Wolfgang Kundt
doaj   +1 more source

Position Resolution in LaBr3 and LaCl3 Scintillators Using Position-Sensitive Photomultiplier Tubes [PDF]

, 2006
Advanced scintillator materials such as LaBr3:Ce and LaCl3:Ce hold great promise for future hard X-ray and gamma-ray astrophysics missions due to their high density, high light output, good linearity, and fast decay times.
Baker, Justin, Bloser, Peter F., Macri, John R, McConnell, Mark L, Ryan, James M.   +4 more
core   +2 more sources

Properties of the intermediate type of gamma-ray bursts [PDF]

, 2006
Gamma-ray bursts can be divided into three groups ("short", "intermediate", "long") with respect to their durations. The third type of gamma-ray bursts - as known - has the intermediate duration. We show that the intermediate group is the softest one. An
Bagoly, Z., Balazs, L. G., Horvath, I., Meszaros, A., Ryde, F.   +4 more
core   +2 more sources

Estimates of Lightning Activity and Terrestrial Gamma-ray Flash Detectability at Mount Etna for the ESTHER Project

Atmosphere, 2023
The Experiment to Study Thunderstorm High-Energy Radiation (ESTHER) is a small project of the Italian National Institute for Astrophysics (INAF), devoted to the study of high-energy emissions from thunderstorms, such as Terrestrial Gamma-ray Flashes and ...
Alessandro Ursi, Danilo Reitano, Enrico Virgilli, Andrea Bulgarelli, Alessandra Tiberia   +4 more
doaj   +1 more source

Hard X-ray Emission Clumps in the gamma-Cygni Supernova Remnant: an INTEGRAL-ISGRI View [PDF]

, 2004
Spatially resolved images of the galactic supernova remnant G78.2+2.1 (gamma-Cygni) in hard X-ray energy bands from 25 keV to 120 keV are obtained with the IBIS-ISGRI imager aboard the International Gamma-Ray Astrophysics Laboratory INTEGRAL.
A. M. Bykov, A. M. Krassilchtchikov, Bagnuolo, Buckley, Bykov, Bykov, Chevalier, Esposito, F. Lebrun, G. Rauw, Gaisser, Goldwurm, H. Bloemen, Higgs, I. N. Toptygin, J.-P. Swings, Landecker, Lebrun, Lozinskaya, Lozinskaya, M. Yu. Gustov, Mavromatakis, Pannuti, R. A. Chevalier, R. Terrier, S. J. Sturner, Sturner, Sturner, Swanenburg, T. A. Lozinskaya, T. V. Smirnova, Uchiyama, W. Hermsen, Winkler, Yu. A. Uvarov, Zhang   +35 more
core   +4 more sources

Hybrid Emission Modeling of GRB 221009A: Shedding Light on TeV Emission Origins in Long GRBs

The Astrophysical Journal, 2023
Observations of long-duration gamma-ray bursts (GRBs) with TeV emission during their afterglow have been on the rise. Recently, GRB 221009A, the most energetic GRB ever observed, was detected by the Large High Altitude Air Shower Observatory experiment ...
Hebzibha Isravel, Damien Bégué, Asaf Pe’er   +2 more
doaj   +1 more source

AGILE Highlights after Six Years in Orbit

Acta Polytechnica CTU Proceedings, 2014
AGILE is an ASI space mission in collaboration with INAF, INFN and CIFS, dedicated to the observation of the gamma-ray Universe in the 30 MeV - 50 GeV energy range, with simultaneous X-ray imaging capability in the 18-60 keV band. The AGILE satellite was
Carlotta Pittori
doaj   +1 more source

Present and future gamma-ray burst experiments [PDF]

, 1998
Gamma-ray burst counterpart studies require small, prompt error boxes. Today, there are several missions which can provide them: BeppoSAX, the Rossi X-Ray Timing Explorer, and the 3rd Interplanetary Network.
Hurley, K.
core   +2 more sources