Results 71 to 80 of about 163,915 (242)

An investigation of mass composition of ultra-high energy cosmic rays with energies above 1019 eV via the study of extensive air showers [PDF]

Serbian Astronomical Journal, 2012
The electron and muon components of extensive air shower (EAS) with energies above 1019 eV are analyzed via various giant EAS arrays. A varying property of showers is observed for two energy ranges; higher and lower than (3 − 4) x 1019 eV.
Doostmohammadi S., Fatemi S.J.
doaj   +1 more source

The HiSCORE concept for gamma-ray and cosmic-ray astrophysics beyond 10\,TeV [PDF]

, 2014
Air-shower measurements in the primary energy range beyond 10 TeV can be used to address important questions of astroparticle and particle physics. The most prominent among these questions are the search for the origin of charged Galactic cosmic rays and
Hampf, Daniel, Horns, Dieter, Kuzmichev, Leonid, Prosin, Vasily, Spiering, Christian, Spitschan, Dominik, Tluczykont, Martin, Wischnewski, Ralf   +7 more
core   +1 more source

A Nonlinear Quantitative Model for Measuring Concentration Ratios From Raman Intensities

Journal of Raman Spectroscopy, EarlyView.
Estimating concentration from Raman intensity ratios is complicated by cross‐contributions from overlapping peaks, causing measured ratios to deviate from the linear behavior assumed in conventional quantitative models. This nonlinear method fully accounts for cross‐contributions, allowing estimation of concentration over several orders of magnitude ...
Joseph Razzell Hollis
wiley   +1 more source

Effects of Magnetic Boundary Layer on Galactic Cosmic Rays during the Heliopause Crossing for Voyager 2

The Astrophysical Journal
Voyager 2 crossed the heliopause in 2018 and observed a small-amplitude modulation of galactic cosmic rays beyond the heliopause, within a boundary layer approximately 0.57 au thick. Prior to this, it detected a similar boundary layer for both the cosmic
Xiaocheng Guo, Yu Zeng, Chi Wang
doaj   +1 more source

Heavy precipitation episodes and cosmic rays variation [PDF]

Advances in Geosciences, 2006
In this paper an attempt is made to investigate the possible temporal correlation between heavy precipitation episodes and cosmic rays' activity, on various time scales.
A. Mavrakis, S. Lykoudis
doaj  

Cosmic rays, aerosol formation and cloud-condensation nuclei: sensitivities to model uncertainties [PDF]

Atmospheric Chemistry and Physics, 2011
The flux of cosmic rays to the atmosphere has been reported to correlate with cloud and aerosol properties. One proposed mechanism for these correlations is the "ion-aerosol clear-air" mechanism where the cosmic rays modulate atmospheric ion ...
E. J. Snow-Kropla, J. R. Pierce, D. M. Westervelt, W. Trivitayanurak   +3 more
doaj   +1 more source

Managing Spectral Intensity Variations With In‐Line Fiber‐Optic High‐Volume Noncontact Raman Probes: A Strategy Exploration

Journal of Raman Spectroscopy, EarlyView.
Robust quantification in noncontact Raman sensing requires dedicated correction of working distance dependent background effects, while laser power variations are readily stabilized using internal reference signals. Chemically relevant Raman intensity can be preserved for bulk composition measurements, under variable laser power and working distance ...
Tiril Aurora Lintvedt, Petter Vejle Andersen, Jens Petter Wold, Nils Kristian Afseth   +3 more
wiley   +1 more source

Overview on direct and indirect measurements of cosmic rays - Some thoughts on galactic cosmic rays and the knee

, 2005
An overview is given on results from direct and indirect measurements of galactic cosmic rays. Their implications on the contemporary understanding of the origin of cosmic rays and the knee in their energy spectrum are discussed.Comment: Invited overview,
Hoerandel, Joerg R.
core   +2 more sources

Survey on AI‐Enabled Computer Vision Technologies and Applications for Space Robotic Missions

Journal of Field Robotics, EarlyView.
ABSTRACT This survey provides a comprehensive overview of recent advancements and challenges in Artificial Intelligence (AI)‐enabled computer vision (CV) techniques for space robotic missions, spanning critical phases such as Entry, Descent, and Landing (EDL), orbital operations, and planetary surface exploration.
Maciej Quoos, Steven Kay, Julia Wajoras, Robert Field, Evridiki V. Ntagiou, Fakher Mohammad, Yang Gao   +6 more
wiley   +1 more source

The AMS-02 Cosmic-Ray Deuteron Flux is Consistent with a Secondary Origin

The Astrophysical Journal Letters
The recent measurements of cosmic-ray (CR) deuteron fluxes by AMS-02 show that the rigidity dependence of deuterons is similar with that of protons but flatter than ^3 He, which has been attributed to the existence of primary deuterons with abundance ...
Qiang Yuan, Yi-Zhong Fan
doaj   +1 more source