Results 21 to 30 of about 24,448 (225)
The hep reaction and the solar neutrino problem [PDF]
Nuclear Physics A, 2001 The results of a new calculation of the astrophysical S-factor for the proton weak capture on 3He are here reviewed. The methods used to obtain very accurate initial and final state wave functions and to construct the nuclear weak current operator are described.
L. E. Marcucci
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Space Weather, Volume 21, Issue 7, July 2023., 2023 Abstract The National Oceanic and Atmospheric Administration's Space Weather Prediction Center (NOAA/SWPC) issues several solar radiation storm products: the long standing proton Warnings and Alerts that are based on particle intensity levels observed by the Geostationary Operational Environmental Satellites; and the more recent International Civil ...
H. M. Bain +3 more
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Library of Simulated Gamma‐Ray Glows and Application to Previous Airborne Observations
Journal of Geophysical Research: Atmospheres, Volume 128, Issue 9, 16 May 2023., 2023 Abstract Gamma‐Ray Glows (GRGs) are high energy radiation originating from thunderclouds, in the MeV energy regime, with typical duration of seconds to minutes, and sources extended over several to tens of square kilometers. GRGs have been observed from detectors placed on ground, inside aircraft and on balloons.
D. Sarria +4 more
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Journal of Geophysical Research: Space Physics, Volume 128, Issue 2, February 2023., 2023 Abstract We present long‐term density trends of the Earth's upper atmosphere at altitudes between 71 and 116 km, based on atmospheric occultations of the Crab Nebula observed with X‐ray astronomy satellites, ASCA, RXTE, Suzaku, NuSTAR, and Hitomi. The combination of the five satellites provides a time period of 28 years from 1994 to 2022.
Satoru Katsuda +11 more
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Deep Underground Science and Engineering, Volume 1, Issue 2, Page 131-137, December 2022., 2022 General plan of the in‐situ experiment (WNS) base. Abstract This paper introduces the establishment of deep underground infrastructure for science and engineering research. First, the representative deep underground research laboratories and facilities in the world and their functions were summarized and reviewed.
Lihua Hu +5 more
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Knowledge as a collective status
Analytic Philosophy, Volume 63, Issue 4, Page 277-304, December 2022., 2022 Abstract While social epistemology is a diverse field, much of it still understands knowledge as an individual status—albeit an individual status that crucially depends on various social factors (such as testimony). Further, the literature on group knowledge until now has primarily focused on limited, specialized groups that may be said to know this or
Jeremy Randel Koons
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The Solar Neutrino Problem [PDF]
Annual Review of Astronomy and Astrophysics, 1995 The solar neutrino problem has persisted for almost three decades. Recent results from Kamiokande, SAGE, and GALLEX indicate a pattern of neutrino fluxes that is very difficult to reconcile with plausible variations in standard solar models. This situation is reviewed, and suggested particle physics solutions are discussed.
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The road toward imaging a black hole: A personal perspective
Natural Sciences, Volume 2, Issue 4, October 2022., 2022 The article describes the authors personal journey towards developig the Event Horizon Telescope and the first image of a black hole. Left: predcition made by the author and collaborators proposing the black hole imaging in 2000. Right: the two images observed and published by the Event Horizon Telescope in 2019 and 2022.
Heino Falcke
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Who's Afraid of the Supersymmetric Dark? The Standard Model vs Low‐Energy Supergravity
Fortschritte der Physik, Volume 70, Issue 7-8, August 2022., 2022 Abstract Use of supergravity equations in astronomy and late‐universe cosmology is often criticized on three grounds: (i) phenomenological success usually depends on the supergravity form for the scalar potential applying at the relevant energies; (ii$ii$) the low‐energy scalar potential is extremely sensitive to quantum effects involving very massive ...
C.P. Burgess, F. Quevedo
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Non-Zero Electric Charge of the Neutrino and the Solar Neutrino Problem [PDF]
, 1994 It has recently been shown that the neutrino can have non-zero electric charge in a number of gauge theories, including the Minimal Standard Model. Assuming non-zero neutrino charge, we develop a new approach to the solar neutrino problem.
Ignatiev, A. Yu., Joshi, G. C.
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