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Neutron star matter spans a wide range of densities, from that of nuclei at the surface to exceeding several times normal nuclear matter density in the core. While terrestrial experiments, such as nuclear or heavy-ion collision experiments,…

High Energy Astrophysical Phenomena · Physics 2023-12-19 Suprovo Ghosh , Debarati Chatterjee , Jürgen Schaffner-Bielich

Solar, terrestrial, and supernova neutrino experiments are subject to muon-induced radioactive backgrounds. The China Jinping Underground Laboratory (CJPL), with its unique advantage of a 2400 m rock coverage and long distance from nuclear…

Muon detectors and neutron monitors were recently installed at Syowa Station, in the Antarctic, to observe different types of secondary particles resulting from cosmic ray interactions simultaneously from the same location. Continuing…

To improve the constraints of symmetry energy at subsaturation density, measuring and accumulating more neutron skin data for neutron rich unstable nuclei is naturally required. Aiming to probe the neutron skin of unstable nuclei by using…

Nuclear Theory · Physics 2023-04-25 Junping Yang , Xiang Chen , Ying Cui , Zhuxia Li , Yingxun Zhang

In this work we present a cosmic ray model that couples primary solar cosmic rays at the top of the Earth's atmosphere with the secondary ones detected at ground level by neutron monitors during Ground Level Enhancements (GLEs). The Neutron…

Earth and Planetary Astrophysics · Physics 2015-05-14 C. Plainaki , H. Mavromichalaki , A. Belov , E. Eroshenko , M. Andriopoulou , V. Yanke

The MEPED instruments on board the NOAA POES andMetOp satellites have been continuously measuring energetic particles in the magnetosphere since 1978. However, degradation of the proton detectors over time leads to an increase in the energy…

Radiogenic heating is a key component of the energy balance and thermal evolution of the Earth. It contributes to mantle convection, plate tectonics, volcanoes, and mountain building. Geo-neutrino observations estimate the present…

Geophysics · Physics 2014-12-12 Steve Dye

The accurate determination of the elemental composition of cosmic rays at high energies is expected to provide crucial clues on the origin of these particles. Previous direct measurements of composition have been limited by experiment…

Astrophysics · Physics 2011-05-23 D. B. Kieda , S. P. Swordy , S. P. Wakely

Atmospheric correction is a fundamental task in remote sensing because observations are taken either of the atmosphere or looking through the atmosphere. Atmospheric correction errors can significantly alter the spectral signature of the…

Image and Video Processing · Electrical Eng. & Systems 2022-03-23 Fangcao Xu , Jian Sun , Guido Cervone , Mark Salvador

Neutrons travel along straight lines in free space, but only survive for a distance which depends on their energy. Thus, detecting neutrons in space in principle provides directional and distance information. Apart from secondary neutrons…

High Energy Astrophysical Phenomena · Physics 2017-08-07 Diego Casadei

The measurement of galaxy morphological parameters from astronomical images features in a wide range of modern analyses, including galaxy evolution and cosmological weak lensing studies. The precision and accuracy of morphological parameter…

Instrumentation and Methods for Astrophysics · Physics 2026-04-23 Samuel Kahn , Ryan Hausen , Hubert Bretonnière , Nicole Drakos , Brant Robertson

Monitoring the evolution of the anthropogenic light emissions is a priority task in light pollution research. Among the complementary approaches that can be adopted to achieve this goal stand out those based on measuring the direct radiance…

Instrumentation and Methods for Astrophysics · Physics 2024-10-31 Salvador Bará

Dark matter is the generally accepted paradigm in astrophysics and cosmology as a solution to the higher rate of rotation in galaxies, among many other reasons. But since there are still some problems encountered by the standard dark matter…

Astrophysics of Galaxies · Physics 2021-02-24 Hanna A. Sabat , Raed Z. Bani-Abdoh , Marwan S. Mousa

The ARIANNA detector is designed to detect neutrinos with energies above $10^{17}$eV. Due to the similarities in generated radio signals, cosmic rays are often used as test beams for neutrino detectors. Some ARIANNA detector stations are…

In order to optimise the design of space instruments making use of detection materials with low atomic numbers, an understanding of the atmospheric neutron environment and its dependencies on time and position is needed. To produce a simple…

Instrumentation and Methods for Astrophysics · Physics 2017-03-31 Merlin Kole , Mark Pearce , Maria Muñoz Salinas

The recent measurement of the lifetime of the free neutron using the beam method has an 8.7 s (4$\sigma$) discrepancy with UCN measurements. The goal of the BL3 experiment is to improve the statistical error of this measurement and help…

Instrumentation and Detectors · Physics 2020-10-23 A. W. Nelsen , E. G. Ballantyne , R. E. Calvert , C. B. Crawford , G. L. Greene , S. E. Vickers , F. E. Wietfeldt

We present one of the first cosmic ray muon flux-angle variation experiments on the QuarkNet Cosmic Ray Detector (QNCRD). We first describe QNCRD and its calibration. The main focus is then quantifying muon flux decrease as a function of…

High Energy Astrophysical Phenomena · Physics 2023-06-27 Ricco Venterea , Urbas Ekka

This article describes the design features and the first test measurements obtained during the installation of a novel high resolution 2D neutron detection technique. The technique proposed in this work consists of a boron layer (enriched…

The Neutron-star Interior Composition Explorer (NICER) is an X-ray astrophysics payload that will be placed on the International Space Station. Its primary science goal is to measure with high accuracy the pulse profiles that arise from the…

High Energy Astrophysical Phenomena · Physics 2016-12-07 Feryal Ozel , Dimitrios Psaltis , Zaven Arzoumanian , Sharon Morsink , Michi Baubock

We consider tomography of the Earth's interior using the neutrino pair beam which has recently been proposed. The beam produces a large amount of neutrino and antineutrino pairs from the circulating partially stripped ions and provides the…

High Energy Physics - Phenomenology · Physics 2018-09-12 Takehiko Asaka , Hisashi Okui , Minoru Tanaka , Motohiko Yoshimura