Results 91 to 100 of about 9,726 (203)

Beyond the Local Void: A Data-driven Search for the Origins of the Amaterasu Particle

The Astrophysical Journal
We introduce a simulation-based inference framework to constrain the origins of individual ultra-high-energy cosmic rays by combining realistic three-dimensional propagation modeling with Bayesian parameter estimation.
Nadine Bourriche, Francesca Capel
doaj   +1 more source

Multi-messenger aspects of cosmic neutrinos*

EPJ Web of Conferences, 2016
The recent observation of TeV-PeV neutrinos by IceCube has opened a new window to the high-energy Universe. I will discuss this signal in the context of multi-messenger astronomy.
Ahlers Markus
doaj   +1 more source

Die Erzeugung von mikroskopisch kleinen Schwarzen Löchern und von Gravitationsstrahlung in Modellen mit großen Extra-Dimensionen

, 2007
This thesis studies the possible production of microscopical black holes and the emission of graviational radiation under the assumption of large extra dimensions.
Koch, Benjamin
core  

A Heavy-metal Scenario of Ultra-high-energy Cosmic Rays

The Astrophysical Journal Letters
The mass composition of ultra-high-energy cosmic rays is an open problem in astroparticle physics. It is usually inferred from the depth of the shower maximum ( X _max ) of cosmic-ray showers, which is only ambiguously determined by modern hadronic ...
Jakub Vícha, Alena Bakalová, Ana L. Müller, Olena Tkachenko, Maximilian K. Stadelmaier   +4 more
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Physics from Time Variability of the VHE Blazar PKS 2155-304 [PDF]

, 2010
Blazars are the principal extragalactic sources of very high energy gamma-ray emission in the Universe. These objects constitute a sub-class of Active Galactic Nuclei whose emission is dominated by Doppler boosted non-thermal radiation from plasma ...
BARRES-DE-ALMEIDA, ULISSES
core  

Cosmic-Ray Constraints on the Flux of Ultrahigh-energy Neutrino Event KM3-230213A

The Astrophysical Journal
The detection of a ≃220 PeV muon neutrino event by the KM3NeT telescope offers an unprecedented opportunity to probe the Universe at extreme energies.
Saikat Das, Bing Zhang, Soebur Razzaque, Siyao Xu   +3 more
doaj   +1 more source

UHECRs Propagation and Their Multimessengers: Upper Limits and the Impact of the Extragalactic Magnetic Field

The Astrophysical Journal
The detection of high-energy astrophysical multimessengers establishes a connection between ultra-high-energy cosmic rays (UHECRs) and powerful cosmic accelerators.
Rodrigo Sasse, Rubens Costa Jr., Adriel G.B. Mocellin, Carlos H. Coimbra-Araujo, R. C. Dos Anjos   +4 more
doaj   +1 more source

Observation of the Galactic Center PeVatron beyond 100 TeV with HAWC

The Astrophysical Journal Letters
We report an observation of ultrahigh-energy (UHE) gamma rays from the Galactic center (GC) region, using 7 yr of data collected by the High-Altitude Water Cherenkov (HAWC) Observatory.
A. Albert, R. Alfaro, C. Alvarez, A. Andrés, J. C. Arteaga-Velázquez, D. Avila Rojas, H. A. Ayala Solares, R. Babu, E. Belmont-Moreno, A. Bernal, K. S. Caballero-Mora, T. Capistrán, A. Carramiñana, S. Casanova, U. Cotti, J. Cotzomi, S. Coutiño de León, E. De la Fuente, C. de León, D. Depaoli, N. Di Lalla, R. Diaz Hernandez, B. L. Dingus, M. A. DuVernois, J. C. Díaz-Vélez, K. Engel, T. Ergin, C. Espinoza, K. L. Fan, K. Fang, N. Fraija, S. Fraija, J. A. García-González, F. Garfias, H. Goksu, M. M. González, J. A. Goodman, S. Groetsch, J. P. Harding, S. Hernández-Cadena, I. Herzog, J. Hinton, D. Huang, F. Hueyotl-Zahuantitla, T. B. Humensky, P. Hüntemeyer, A. Iriarte, S. Kaufmann, D. Kieda, A. Lara, W. H. Lee, J. Lee, H. León Vargas, J. T. Linnemann, A. L. Longinotti, G. Luis-Raya, K. Malone, O. Martinez, J. Martínez-Castro, J. A. Matthews, P. Miranda-Romagnoli, J. A. Montes, J. A. Morales-Soto, E. Moreno, M. Mostafá, M. Najafi, L. Nellen, M. Newbold, M. U. Nisa, R. Noriega-Papaqui, L. Olivera-Nieto, N. Omodei, M. Osorio-Archila, Y. Pérez Araujo, E. G. Pérez-Pérez, C. D. Rho, D. Rosa-González, E. Ruiz-Velasco, H. Salazar, D. Salazar-Gallegos, A. Sandoval, M. Schneider, G. Schwefer, 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, Z. Wang, I. J. Watson, E. Willox, H. Wu, S. Yu, S. Yun-Cárcamo, H. Zhou   +101 more
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Atmospheric Cerenkov astronomy of cataclysmic variables & other potential gamma ray sources [PDF]

, 1993
Recent developments in the application of the atmospheric Cerenkov technique to 7-ray astronomy are reviewed here. These include new methods of signal to noise enhancement and the increasing diversity of stellar systems positively identified as Very High
Bradbury, S.M, Bradbury, Stella Marie
core  

Precise Measurement of the Cosmic-Ray Spectrum and 〈ln A〉 by LHAASO: Connecting the Galactic to the Extragalactic Components

The Astrophysical Journal
Recently, the LHAASO Collaboration has provided precise measurements of the cosmic rays (CRs) all-particle energy spectrum and mean logarithmic mass $\left\langle \mathrm{ln}A\right\rangle $ from 0.3 to 30 PeV. Combining the CR measurements by AMS-02 and
Xing-Jian Lv, Xiao-Jun Bi, Kun Fang, Yi-Qing Guo, Hui-Hai He, Ling-Ling Ma, Peng-Fei Yin, Qiang Yuan, Meng-Jie Zhao   +8 more
doaj   +1 more source