Results 61 to 70 of about 36,655 (199)

Models of the Knee in the Energy Spectrum of Cosmic Rays [PDF]

open access: yes, 2004
The origin of the knee in the energy spectrum of cosmic rays is an outstanding problem in astroparticle physics. Numerous mechanisms have been proposed to explain the structure in the all-particle spectrum.
Aglietta   +28 more
core   +3 more sources

Effects of the May 2024 Solar Storm on the Earth's Radiation Belts Observed by CALET on the International Space Station

open access: yesGeophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract In May 2024, extraordinary solar activity triggered a powerful solar storm, impacting Earth and producing the extreme geomagnetic storm of 10‐11 May, the most intense since 2003. This had significant effects on the magnetosphere, leading to the creation of a new long‐lasting component of relativistic electrons and to flux changes in the South ...
A. Ficklin   +8 more
wiley   +1 more source

Black holes and fundamental physics

open access: yes, 2006
We give a review of classical, thermodynamic and quantum properties of black holes relevant to fundamental physics.Comment: Invited talk at the Fifth International Workshop on New Worlds in Astroparticle Physics, University of the Algarve, Faro ...
Lemos, José P. S.
core   +1 more source

Whipped and Mixed Warm Clouds in the Deep Sea

open access: yesGeophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract Turbulence is indispensable to redistribute nutrients for all life forms larger than microbial, on land and in the ocean. Yet, the development of deep‐sea turbulence was not studied in three dimensions to date. As a disproportionate laboratory, an array of nearly 3,000 high‐resolution temperature sensors had been installed for three years on ...
Hans van Haren, KM3NeT collaboration
wiley   +1 more source

Astrophysical origin of high-energy cosmic neutrinos

open access: yesEPJ Web of Conferences, 2015
The origin of high-energy cosmic neutrinos is a new interesting mystery in astroparticle physics. The present data suggest interesting connection to cosmic-ray and/or gamma-ray sources.
Murase Kohta
doaj   +1 more source

MACRO and the atmospheric neutrino problem [PDF]

open access: yes, 2001
After a brief presentation of the MACRO detector we discuss the updated data on atmospheric muon neutrinos, and the interpretation in terms of neutrino oscillations.Comment: 6 pages, 4 figures.
Spurio, M.
core   +3 more sources

Cosmic Ray Counting Variability From Water‐Cherenkov Detectors as a Proxy of Stratospheric Conditions in Antarctica

open access: yesEarth and Space Science, Volume 12, Issue 11, November 2025.
Abstract This work examines atmospheric effects on cosmic ray counts observed by a Water‐Cherenkov detector at the Argentine Antarctic Marambio Station. We analyze the influence of ground‐level barometric pressure and geopotential height at various pressure levels on daily particle rates, finding the strongest association at 100 hPa, linked to ...
N. A. Santos   +7 more
wiley   +1 more source

What do we expect to learn from γ-beam experiments related to nuclear astrophysics at ELI-NP? [PDF]

open access: yesEPJ Web of Conferences
This paper addresses some of the of open problems in photonuclear physics which await to be resolved using high-brilliance γ-ray beams, such as precise measurements of total or partial cross sections of photonuclear reactions related to astroparticle ...
Balabanski Dimiter L.
doaj   +1 more source

Study of Multi-muon Events from EAS with the L3 Detector at Shallow Depth Underground [PDF]

open access: yes, 2000
We present first preliminary data from the L3+Cosmics experiment and results from Monte Carlo simulations of multi-muon events as observed 30 m underground.Comment: 3 pages, 2 figures; presented at the 6th International Workshop on Topics in ...
Bourilkov, D. Bourilkov, Le Coultre
core   +2 more sources

Physics of astroparticles [PDF]

open access: yesBrazilian Journal of Physics, 2007
The measurement of the properties of the highest energy astroparticles that hit the Earth's atmosphere is a challenging problem that the Auger experiment tries to solve. In this talk we present a general description of several aspects of the interactions between those high energy particles and the Earth's atmosphere, focusing in primary reconstruction.
openaire   +4 more sources

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