Results 51 to 60 of about 163,915 (242)

The origin of galactic cosmic rays [PDF]

, 2007
The origin of galactic cosmic rays is one of the most interesting unsolved problems in astroparticle physics. Experimentally, the problem is attacked by a multi-disciplinary effort, namely by direct measurements of cosmic rays above the atmosphere, by ...
Aharonian, Aharonian, Aharonian, Allan, Amenomori, Antoni, Antoni, Antoni, Antoni, Antoni, Apel, Ardouin, Baade, Bell, Berezhko, Berezhko, Blanford, Candia, Doll, Engel, Engler, Falcke, Ferenc, Fermi, Gahbauer, Gaisser, Garcia-Munoz, Garzia-Munoz, Guzik, Hess, Hinton, Huege, Hörandel, Hörandel, Hörandel, Hörandel, Hörandel, Hörandel, Hörandel, Hörandel, Hörandel, Jörg R. Hörandel, Kestel, Krymsky, Maier, Matthews, Milke, Navarra, Ptuskin, Seo, Simpson, Strong, Völk, Weekes, Yanasak   +54 more
core   +3 more sources

Cosmic rays [PDF]

Proceedings of the 15th International Conference on Availability, Reliability and Security, 2020
When evidence is recovered from a suspected crime scene and a criminal prosecution is mounted, the defence team may attempt to formulate an alternative non-criminal explanation for the existence of that evidence. Examples from the digital realm include the "Trojan Horse Defence" and the "Inadvertent Download Defence" against the charge of possession of
openaire   +2 more sources

Integrating Automated Electrochemistry and High‐Throughput Characterization with Machine Learning to Explore Si─Ge─Sn Thin‐Film Lithium Battery Anodes

Advanced Energy Materials, Volume 15, Issue 11, March 18, 2025.
A closed‐loop, data‐driven approach facilitates the exploration of high‐performance Si─Ge─Sn alloys as promising fast‐charging battery anodes. Autonomous electrochemical experimentation using a scanning droplet cell is combined with real‐time optimization to efficiently navigate composition space.
Alexey Sanin, Jackson K. Flowers, Tobias H. Piotrowiak, Frederic Felsen, Leon Merker, Alfred Ludwig, Dominic Bresser, Helge Sören Stein   +7 more
wiley   +1 more source

The mass composition of cosmic rays measured with LOFAR

EPJ Web of Conferences, 2017
High-energy cosmic rays, impinging on the atmosphere of the Earth initiate cascades of secondary particles, the extensive air showers. The electrons and positrons in the air shower emit electromagnetic radiation.
Hörandel Jörg R., Bonardi A., Buitink S., Corstanje A., Falcke H., Mitra P., Mulrey K., Nelles A., Rachen J.P., Rossetto L., Schellart P., Scholten O., ter Veen S., Thoudam S., Trinh T.N.G., Winchen T.   +15 more
doaj   +1 more source

ПРОБЛЕМА ПРОИСХОЖДЕНИЯ КОСМИЧЕСКИХ ЛУЧЕЙ СВЕРХВЫСОКИХ ЭНЕРГИЙ

Odessa Astronomical Publications, 2011
The problem of cosmic ray origin comes to two main questions: were and how cosmic particles are accelerated up to very high energies. In this paper, arguments in favor of two basic sources of cosmic rays (Galaxy and Metagalaxy) are considered and ...
А. А. Петрухин
doaj   +1 more source

The THESEUS Space Mission and the Infrared Telescope Calibration Unit

Astronomische Nachrichten, EarlyView.
ABSTRACT The Transient High‐Energy Sky and Early Universe Surveyor (THESEUS) is an ESA M7 mission concept currently in Phase A, designed to exploit gamma‐ray bursts to probe the early Universe while advancing multi‐messenger and time‐domain astrophysics. To achieve its ambitious goals, THESEUS will combine wide‐band x‐ray and gamma‐ray monitors with an
András Péter Joó, Rebeka Gyöngyi Kiss, Lorenzo Amati, Bendegúz Koncz, Örs Detre, Gyula Zilizi, Zsolt Bagoly, István I. Rácz, Sándor Pintér, L. Viktor Tóth   +9 more
wiley   +1 more source

Cosmic-ray composition and its relation to shock acceleration by supernova remnants [PDF]

, 2007
An overview is given on the present status of the understanding of the origin of galactic cosmic rays. Recent measurements of charged cosmic rays and photons are reviewed.
Abbasi, Abbasi, Abraham, Abu-Zayyad, Abu-Zayyad, Aglietta, Aglietta, Aglietta, Aglietta, Aguirre, Aharonian, Aharonian, Aharonian, Aharonian, Ajima, Alcaraz, Amenomori, Amenomori, Amenomori, Amenomori, Amenomori, Anchordoqui, Antoni, Antoni, Antoni, Antoni, Antoni, Antoni, Arqueros, Asakimori, Atoyan, Ave, Baade, Bell, Bellotti, Belov, Berezhko, Berezhko, Berezhko, Berezinsky, Bernlöhr, Biermann, Binns, Binns, Blanford, Boezio, Candia, Chernov, Cherry, Compton, Corbato, Cutler, Derbina, Dickinson, Diehl, Ellison, Engelmann, Engelmann, Engler, Ferenc, Fermi, Fowler, Fowler, Fowler, Gahbauer, Gaisser, Garcia-Munoz, Garzia-Munoz, Glasmacher, Glasmacher, Gress, Haungs, Hillas, Hinton, Huang, Hörandel, Hörandel, Hörandel, Hörandel, Hörandel, Hörandel, Hörandel, Ichimura, Juliusson, Jörg R. Hörandel, Kalmykov, Keilhauer, Kestel, Kieda, Kobayakawa, Lagage, Lawrence, Lawrence, Lodders, Maier, Matthews, Menn, Meyer, Meyer, Minagawa, Müller, Nagano, Nagano, Navarra, Ogio, Ptuskin, Ptuskin, Ptuskin, Roulet, Ryan, Sanuki, Seo, Shibata, Shirk, Simpson, Simpson, Simpson, Smith, Stanev, Stone, Strong, Sveshnikova, Swordy, Takeda, Völk, Watson, Weekes, Wiebel-Soth, Wiedenbeck, Yanasak   +129 more
core   +4 more sources

Feasibility Study for Application of Digitized Henize Mt. Wilson Michigan Southern Sky Hα$$ \boldsymbol{\alpha} $$ Survey Low‐Dispersive Spectral Plates for Searches for Anomalous and Highly Redshifted Objects

Astronomische Nachrichten, EarlyView.
ABSTRACT The goal of this study is to confirm the feasibility of the use of digitized low dispersive MtWilson Michigan Southern Sky Hα$$ \alpha $$ survey astronomical photographic plates for modern astrophysical research. The detection of highly redshifted objects, such as early galaxies and quasars, is fundamental to understanding the universe's ...
Tauseef Ahmad Zafar, René Hudec, Marta Mara Merono Vidagany, Fehmi Mejri   +3 more
wiley   +1 more source

Spectra of He Isotopes and the 3He/4He Ratio

The Astrophysical Journal
Since its launch, the Alpha Magnetic Spectrometer-02 (AMS-02) has delivered outstanding quality measurements of the spectra of cosmic-ray (CR) species, e ^± , $\bar{p}$ , and nuclei (H–Si, S, Fe), which have resulted in a number of breakthroughs. Besides
M. J. Boschini, S. Della Torre, M. Gervasi, D. Grandi, G. Jóhannesson, G. La Vacca, N. Masi, I. V. Moskalenko, S. Pensotti, T. A. Porter, L. Quadrani, P. G. Rancoita, D. Rozza, M. Tacconi   +13 more
doaj   +1 more source

Hidden No More: Spotlight on Tidal Disruption Events in Active Galactic Nuclei

Astronomische Nachrichten, EarlyView.
ABSTRACT Tidal disruption events (TDEs) are typically discovered in previously quiescent galaxies. However, earlier studies have revealed a handful of TDEs occurring in pre‐existing active galactic nuclei (AGN). We discuss AT2019aalc, a promising TDE candidate in an AGN, and compare it to similar sources.
Patrik Milán Veres
wiley   +1 more source