Results 121 to 130 of about 9,726 (203)

Resuts of the Heavy Cosmic-Ray Analysis with CALET on the International Space Station [PDF]

The study of the spectral behavior of charged cosmic-ray elements is of particular interest to gain a deeper understanding of propagation and acceleration phenomena in our Galaxy. The Calorimetric Electron Telescope (CALET), launched to the International
Papini P., Munakata K., Marrocchesi P. S., Mori N., Motz H. M., Kataoka R., Bongi M., Katayose Y., Ormes J. F., Sakamoto T., Terasawa T., Bruno A., Collazuol G., Cannady N., Yanagita S., Sugita S., Shiomi A., Miyake S., Ichimura M., Mori M., Tsunesada Y., Yoshida A., Ozawa S., Uchihori Y., Akaike Y., Krizmanic J. F., Ricciarini S. B., Pacini L., Maestro P., Okuno S., Moiseev A. A., Asaoka Y., Castellini G., Nishimura J., De Nolfo G. A., Gonzi S., Sakai K., Israel M. H., Spillantini P., Sasaki M., Kawakubo Y., Kasahara K., Kohri K., Torii S., Shimizu Y., Zober W. V., Binns W. R., Kato C., Vannuccini E., Bigongiari G., Krawczynski H. S., Messineo A. M., Hams T., Adriani O., Brogi P., Cherry M. L., Stolzi F., Ioka K., Mitchell J. W., Ishizaki W., Kobayashi K., Wefel J. P., Rauch B. F., Kawanaka N., Ficklin A. W., Fuke H., Checchia C., Hibino K., Tamura T., Asano K., Kataoka J., Nakahira S., Takita M., Yoshida K., Sulaj A., Yamaoka K., Ebisawa K., Guzik T. G., Berti E.   +78 more
core   +1 more source

On Gamma Rays as Predictors of Ultra-high-energy Cosmic-Ray Flux in Active Galactic Nuclei

The Astrophysical Journal
Active galactic nuclei (AGN) are among the main candidates for ultra-high-energy cosmic-ray (UHECR) sources. However, while some theoretical and phenomenological works favor AGNs as the main sources, recent works have shown that using the very-high ...
Cainã de Oliveira, Rodrigo Guedes Lang, Pedro Batista   +2 more
doaj   +1 more source

TeV gamma-ray emission from accreting binary pulsars [PDF]

, 1990
The high-mass X-ray binary SMC X-1 has been observed during the interval 1986-1989 at a threshold γ-ray energy of 0.4 TeV using the University of Durham Mark III air Cerenkov telescope at Narrabri.
Mannings, Vincent, Mannings, V
core  

Cosmogenic Origin of KM3-230213A: Delayed Gamma-Ray Emission from a Cosmic-Ray Transient

The Astrophysical Journal Letters
The highest-energy cosmic neutrino detected by the ARCA detector of KM3NeT has reignited the quest to pinpoint the sources of ultrahigh-energy cosmic rays (UHECRs; E  ≳ 0.1 EeV).
Sovan Boxi, Saikat Das, Nayantara Gupta
doaj   +1 more source

Cosmic necklaces in string theory and field theory

, 2010
PhDIn this thesis we investigate astrophysical phenomena which arise in models with compact extra dimensions, focussing on the cosmological consequences of strings which wrap cycles in the internal space. Embedding our strings in the Klebanov-Strassler
Lake, Matthew James
core  

Acceleration of Ultra-high-energy Cosmic Rays in the Kiloparsec-scale Jets of Nearby Radio Galaxies

The Astrophysical Journal Letters
Radio galaxies have long been considered as potential sources of ultra-high-energy cosmic rays (UHECRs). Recent analyses of the UHECR spectrum, composition, and arrival directions indicate that the nearest radio galaxy, Centaurus A, could be linked to ...
Jie-Shuang Wang, Brian Reville, Frank M. Rieger, Felix A. Aharonian   +3 more
doaj   +1 more source

The Fluorescence Radiation Yield Induced in Atmosphere by Ultra-High Energy Cosmic Rays [PDF]

Proceedings of 4th School on Cosmic Rays and Astrophysics — PoS(CRA School), 2011
openaire   +1 more source

The Search For Pulsar Wind Nebulae in the Very High Energy Gamma-ray Regime [PDF]

, 2010
The aim of this Thesis is to study the development of pulsar wind nebulae in the TeV regime and in doing so uncover more sources which have as yet not been observed at these wavelengths.
KEOGH, DOMINIC,ROBERT, Keogh, Dominic Robert   +1 more
core  

Cosmogenic Neutrino Point Source and KM3-230213A

The Astrophysical Journal
Cosmogenic neutrinos (CNs) are produced by ultra-high-energy cosmic rays (UHECRs) interacting with cosmic background radiation. We investigated the properties of CN point/extended sources, i.e., the neutrino spectrum and angular profile as functions of ...
Qinyuan Zhang, Tian-Qi Huang, Zhuo Li
doaj   +1 more source