Showing 101 - 117 results of 117 for search '"cosmic rays"', query time: 0.06s Refine Results
  1. 101

    Extended Linear and Nonlinear Lorentz Transformations and Superluminality by Dara Faroughy

    Published 2013-01-01
    “…Particle energies are evaluated in this scenario at c for several particles, including the neutrinos, and are auspiciously found to be below the GKZ energy cutoff and in compliance with a host of worldwide ultrahigh energy cosmic ray data. Section 3 presents two broad scenarios involving a number of novel nonlinear LTs (NLTs) featuring small Lorentz invariance violations (LIVs), as well as resurrecting the notion of simultaneity for limited spacetime events as perceived by two observers in URM. …”
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  2. 102

    The interplay of geology, climate and tectonics on river incision: the example of the High Verdon Gorges, Southwestern French Alps by Cardinal, Thibaut, Petit, Carole, Rolland, Yann, Schwartz, Stéphane, Valla, Pierre Gaston, Scalabrino, Bruno, Audin, Laurence, Bertauts, Maxime, Zerathe, Swann, Thiéblemont, Denis, Braucher, Régis, Team, ASTER

    Published 2023-07-01
    “…We collected 24 samples along three polished surfaces for Cosmic Ray Exposure (CRE) $^{36}$Cl dating, which allowed us to constrain short-term incision rates ranging from 0.06 to 0.2 mm/yr between 60 and 15 ka. …”
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  3. 103

    Mean arrival time distributions of extensive air showers at ultrahigh energies by I. F. Hussein, A. A. Al-Rubaiee, A. F. Mkhaiber

    Published 2024-12-01
    “…This paper investigates extensive air showers by estimating the muon and electron mean arrival time distributions at ultrahigh energies for various cosmic-ray particles. The Monte Carlo package AIRES (version 19.04.00) was used to perform simulations at energies of 1019 and 1020 eV. …”
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  4. 104

    Tracing ancient solar cycles with tree rings and radiocarbon in the first millennium BCE by Nicolas Brehm, Charlotte L. Pearson, Marcus Christl, Alex Bayliss, Kurt Nicolussi, Thomas Pichler, David Brown, Lukas Wacker

    Published 2025-01-01
    “…To extend this timeline, cosmic ray-produced radionuclides like 14C in tree-rings provide invaluable insights. …”
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  5. 105

    Nanoscale characterization of space weathering in lunar samples by A. M. Grice, P. C. Stancil, M. Ghafariasl, S. Singh, S. Gamage, M. J. Schaible, Y. Abate, K. Lang, T. M. Orlando

    Published 2025-01-01
    “…Spatially localized 1050 cm−1/935 cm−1 band ratios in Nano-FTIR hyperspectral maps may further reflect impact-induced shock nanostructures, while shifts in silicate band positions indicate accumulated radiation damage at the nanoscale from prolonged space weathering due to micrometeorites, solar wind, energetic x-rays and cosmic ray bombardment. Our observations demonstrate that space weathering alterations of the surface of lunar samples at the nanoscale may provide a mechanism to distinguish lunar samples of variable surface exposure age.…”
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  6. 106

    Historical Reconstruction of Astronaut Cancer Risk: Context for Recent Solar Minima by Tony C. Slaba

    Published 2021-10-01
    “…Abstract As NASA prepares for longer duration missions beyond the geomagnetic field, the possibility of intensifying galactic cosmic ray (GCR) exposure raises possible concerns for mission planning and crew health and safety. …”
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  7. 107

    A New Model for Nowcasting the Aviation Radiation Environment With Comparisons to In Situ Measurements During GLEs by A. D. P. Hands, F. Lei, C. S. Davis, B. J. Clewer, C. S. Dyer, K. A. Ryden

    Published 2022-08-01
    “…Under the UK Space Weather Instrumentation, Measurement, Modeling and Risk programme, we have developed a new model to provide nowcasts of the aviation radiation environment, including both the galactic cosmic ray (GCR) background and during GLE events. The Model for Atmospheric Ionising Radiation Effects (MAIRE+) uses multiple data sources to characterize primary GCR and GLE particle spectra and combines these with precalculated geomagnetic and atmospheric response matrices to predict particle fluxes from ground level to 20 km altitude across the entire globe. …”
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  8. 108

    Intelligent methods for natural data analysis: application to space weather by O.V. Mandrikova

    Published 2024-02-01
    “…The efficiency of network sharing an Autoencoder with adaptive wavelet threshold filtering is shown in the problem of anomaly detection in cosmic ray flux intensity data.…”
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  9. 109

    Study of the Impact of Past Extreme Solar Events on the Modern Air Traffic by G. Hubert, S. Aubry

    Published 2021-04-01
    “…Abstract The ancient solar energetic particle (SEP) events of 774/775 CE and 993/994 CE were characterized thanks to radionuclide productions stored in environmental archives as ice cores or tree rings. Primary cosmic ray spectra deduced from these cosmogenic isotope data indicate that the impact of these extreme SEP events would have been much more significant than any of the ones observed during the modern era. …”
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  10. 110

    Improving H2RG Performance in SPHEREx Brassboard Model by Chi H. Nguyen, Phillip Korngut, C. Darren Dowell, James Bock, Jill Burnham, Samuel Condon, Walter Cook, Grigory Heaton, Howard Hui, Branislav Kecman, Hiromasa Miyasaka, Kenneth Manatt, Hien T. Nguyen, Stephen Padin, Marco Viero

    Published 2025-01-01
    “…The instrument implements HAWAII-2RG (H2RG) detectors and custom-built Video8 electronics with multiple sampling features to optimize the H2RG noise performance, including nonsequential row reads, voltage monitoring, multiple visits to optically dark reference pixels, as well as onboard slope fitting and cosmic-ray removal. We report here the performance of a single H2RG with the readout electronics. …”
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  11. 111
  12. 112

    Very High Energy Solar Energetic Particle Events and Ground Level Enhancement Events: Forecasting and Alerts by N. Crosby, H. Mavromichalaki, O. Malandraki, M. Gerontidou, M. Karavolos, D. Lingri, P. Makrantoni, M. Papailiou, P. Paschalis, A. Tezari

    Published 2024-09-01
    “…GLE Alert++ is a product, built by the Athens Cosmic Ray Group of the National and Kapodistrian University of Athens, that issues alerts when a GLE event starts to register and is based on ground‐based neutron monitor observations. …”
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  13. 113

    Revisiting ice-marginal positions north-east of Feldberg, southern Black Forest, south-west Germany by F. M. Hofmann, F. Preusser

    Published 2025-01-01
    “…Determination of the age of glacial landforms with the aid of cosmic-ray exposure (CRE) dating and luminescence methods will allow for the establishment of an integrated regional stratigraphical model. …”
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