Results 131 to 140 of about 2,379,646 (229)

Gamma-ray Astronomy

, 2007
The relevance of gamma-ray astronomy to the search for the origin of the galactic and, to a lesser extent, the ultra-high-energy cosmic rays has long been recognised. The current renaissance in the TeV gamma-ray field has resulted in a wealth of new data on galactic and extragalactic particle accelerators, and almost all the new results in this field ...
openaire   +2 more sources

Gamma ray astronomy

, 2019
Introduction, status, results, outlook of Gamma Ray Astronomy and the Cherenkov Telescope ...
Knapp, Johannes
core  

Unveiling Nonlinear Patterns between Gamma-Ray Burst Observational Features and Redshift via Machine Learning

The Astrophysical Journal
The study of multifeature cosmological correlations in gamma-ray bursts (GRBs) holds significant importance for establishing them as effective cosmological probes.
Qi Guo
doaj   +1 more source

TeV Analysis of a Source-rich Region with the HAWC Observatory: Is HESS J1809-193 a Potential Hadronic PeVatron?

The Astrophysical Journal
HESS J1809-193 is an unidentified TeV source, first detected by the High Energy Stereoscopic System (H.E.S.S.) collaboration. The emission originates in a source-rich region that includes several supernova remnants (SNRs) and pulsars including SNR G11.1 ...
A. Albert, R. Alfaro, C. Alvarez, J. C. Arteaga-Velázquez, D. Avila Rojas, R. Babu, E. Belmont-Moreno, A. Bernal, M. Breuhaus, K. S. Caballero-Mora, T. Capistrán, A. Carramiñana, S. Casanova, J. Cotzomi, E. De la Fuente, D. Depaoli, N. Di Lalla, R. Diaz Hernandez, B. L. Dingus, M. A. DuVernois, C. Espinoza, K. L. Fan, K. Fang, B. Fick, N. Fraija, J. A. García-González, F. Garfias, A. Gonzalez Muñoz, M. M. González, J. A. Goodman, S. Groetsch, J. P. Harding, S. Hernández-Cadena, I. Herzog, D. Huang, F. Hueyotl-Zahuantitla, P. Hüntemeyer, A. Iriarte, V. Joshi, S. Kaufmann, A. Lara, J. Lee, H. León Vargas, A. L. Longinotti, G. Luis-Raya, K. Malone, J. Martínez-Castro, J. A. Matthews, P. Miranda-Romagnoli, J. A. Montes, J. A. Morales-Soto, E. Moreno, M. Mostafá, L. Nellen, M. Newbold, M. U. Nisa, R. Noriega-Papaqui, M. Osorio, Y. Pérez Araujo, E. G. Pérez-Pérez, C. D. Rho, D. Rosa-González, E. Ruiz-Velasco, H. Salazar, A. Sandoval, M. Schneider, J. Serna-Franco, A. J. Smith, Y. Son, R. W. Springer, O. Tibolla, K. Tollefson, I. Torres, R. Torres-Escobedo, R. Turner, F. Ureña-Mena, E. Varela, X. Wang, I. J. Watson, E. Willox, S. Yun-Cárcamo, H. Zhou, THE HAWC COLLABORATION   +82 more
doaj   +1 more source

Status of the TAIGA Experiment: Gamma Astronomy

The status of the TAIGA experiment (Tunka Advanced Instrument for cosmic-ray physics and Gamma-ray Astronomy) located in the Tunka Valley is presented.
Podgrudkov, D., Kolosov, N., Grinyuk, A., Kuzmichev, L., Vaidyanathan, Arun, Osipova, E., Shipilov, D., Bulan, A., Pankov, L., Silaev (junior), A., Grishin, O., Kokoulin, R., Ternovoy, M., Chiavassa, Andrea, Ivanova, A.L., Volkov, N., Pakhorukov, A., Kryukov, Alexander, Blinov, A., Kalmykov, N.N., Kompaniets, K., Astapov, I., Gress, E., Razumov, A., Dyachok, A., Sokolov, A., Yashin, I., Kozhin, V., Sidorenkov, A., Lagutin, A., Panov, A., Lavrova, M., Tanaev, A., Budnev, N., Borodin, A., Kiryukhin, S., Skurikhin, A., Ushakov, N., Satyshev, I., Rubtsov, Grigory, Bezyazykov, P., Ilyushin, M., Gress, T., Korosteleva, E., Postnikov, Evgeny, Grebenyuk, V., Petrukhin, A., Garmash, Alexey, Gafarov, A., Voronin, D., Chernov, D., Bonvech, E., Mirgazov, R., Volchugov, P., Tkachev, L., Lubsandorzhiev, N., Pan, A., Pushnin, A., Zagorodnikov, A., Lubsandorzhiev, B., Sveshnikova, L., Raikin, Roman, Ptuskin, V., Kindin, V., Gress, O., Okuneva, E., Tabolenko, V., Lemeshev, Y., Kravchenko, Evgeniy, Monkhoev, R., Popova, Elena, Prosin, V., Ryabov, E., Zhurov, D., Samoliga, V.   +74 more
core   +1 more source

Very high energy cosmic gamma rays from radio and x-ray pulsars [PDF]

, 1987
This thesis is concerned with the detection of very high energy cosmic gamma-rays from isolated pulsars and X-ray binary sources using the atmospheric Cerenkov technique. A general introduction to gamma ray detection techniques is followed by adscription
Chadwick, P.M, Chadwick, Mary Paula
core  

Neutrino astronomy and gamma-ray bursts

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2007
The construction of large-volume detectors of high energy, greater than 1 TeV, neutrinos is mainly driven by the search for extragalactic neutrino sources. The existence of such sources is implied by the observations of ultra-high-energy, greater than or equal to 10 19  eV, cosmic rays, the origin of which is a ...
openaire   +3 more sources

High energy gamma ray astronomy [PDF]

, 1987
High energy gamma ray astronomy has evolved with the space age. Nonexistent twenty-five years ago, there is now a general sketch of the gamma ray sky which should develop into a detailed picture with the results expected to be forthcoming over the next ...
Fichtel, Carl E.
core  

A Study on the Line of Sight to Galaxies Detected at Gamma-Ray Energies

The Astrophysical Journal Letters
The large-scale universal structure comprises strands of dark matter and galaxies with large underdense volumes known as voids. We measure the fraction of the line of sight that intersects voids for active galactic nuclei (AGN) detected by Fermi Large ...
Amy Furniss, Josepf N. Amador, Olivier Hervet, Ollie Jackson, David A. Williams   +4 more
doaj   +1 more source

Impacts of Voids, Line-of-sight Interactions, and Local Emission Environment on the Detectability of Gamma-Ray Active Galactic Nuclei

The Astrophysical Journal
Cosmic voids may have novel effects on the propagation of high-energy photons. We consider the fraction of the line of sight that intersect voids (termed “voidiness”).
Ollie Jackson, Amy Furniss, Olivier Hervet, Megan Splettstoesser, David A. Williams   +4 more
doaj   +1 more source