Results 111 to 120 of about 2,433,272 (194)
Astrophysically motivated bulge-disc decompositions of Sloan Digital Sky Survey galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2012 28 pages, 34 figures, MNRAS ...
J. E. Gunn, C. N. Lackner
openaire +4 more sources
NAIRAS Version 3 Atmospheric Ionizing Radiation Validation: Comparisons to RaD‐X Measurements
Space Weather, Volume 23, Issue 4, April 2025.Abstract The Nowcast of Aerospace Ionizing RAdiation System (NAIRAS) model predicts dosimetric and radiative flux quantities for assessing human radiation exposure levels and radiation effects on flight electronic systems from the surface of the Earth to deep space. NAIRAS version 3 includes many updates and improvements to the model.
Christopher J. Mertens +2 more
wiley +1 more source
The Symmetry, Color and Morphology of Galaxies in the Hubble Deep Field [PDF]
, 1998 We present a new method of utilizing the color and asymmetry values for galaxies in the Hubble Deep Field to determine both their morphological features and physical parameters.
Bershady, Matthew A. +1 more
core +3 more sources
Nowcasting Solar Energetic Particle Events for Mars Missions
Space Weather, Volume 23, Issue 4, April 2025.Abstract In addition to the omnipresent Galactic Cosmic Rays, sudden Solar Energetic Particle (SEP) events present considerable health hazards for manned space missions. These events not only contribute to an increased long‐term cancer risk, but can, in extreme cases, cause acute radiation syndromes.
Jan Leo Löwe +10 more
wiley +1 more source
Virial masses of galaxy clusters in the post-Newtonian limit [PDF]
arXiv, 2012 We estimate virial masses of galaxy clusters using the parametrized post-Newtonian (PPN) virial theorem. Also, we show explicitly that post-Newtonian corrections can not address the mass discrepancy in the galaxy clusters.
arxiv
Cross-correlation of the astrophysical gravitational-wave background with galaxy clustering
Physical Review D, 2020 We investigate the correlation between the distribution of galaxies and the predicted gravitational-wave background of astrophysical origin. We show that the large angular scale anisotropies of this background are dominated by nearby non-linear structure, which depends on the notoriously hard to model galaxy power spectrum at small scales. In contrast,
Valeri Vardanyan +3 more
openaire +5 more sources
Cosmic Rays and the Askaryan Effect Reveal Subsurface Structure and Buried Ice on the Moon
Geophysical Research Letters, Volume 52, Issue 6, 28 March 2025.Abstract We present the first full‐wavelength numerical simulations of the electric field generated by cosmic ray impacts into the Moon. Billions of cosmic rays fall onto the Moon every year. Ultra‐high energy cosmic ray impacts produce secondary particle cascades within the regolith and subsequent coherent, wide‐bandwidth, linearly‐polarized radio ...
E. S. Costello +12 more
wiley +1 more source
The Galaxies of Nonstandard Enlargements of Infinite and Transfinite Graphs: II [PDF]
arXiv, 2005 This report is an improvement of a prior report (Report 813). It sharpens the principal theorems (Theorems 4.2 and 11.2 of Report 813) while simplifying their proofs. There are also several minor changes involving clarifications and corrections of misprints.
arxiv
Engineering Reports, Volume 7, Issue 3, March 2025.We present the details of implementing a highly efficient and scalable Cosmological N‐body simulation framework on the heterogeneous many‐core supercomputer Sunway TaihuLight. We manage to conduct cosmological simulations which contain up to 1.6 trillion particles, obtaining a sustained performance of 56.3 PFlops with a weak‐scaling parallel efficiency
Zhao Liu +8 more
wiley +1 more source
The VLBA 2cm Survey: Kinematics of pc-Scale Structures in Active Galactic Nuclei [PDF]
, 2002 The kinematics of jets in active galactic nuclei (QSOs, BL Lacs, Radio Galaxies and Empty Field objects) on parsec scales is being studied with Very Long Baseline Array observations at 15 GHz of a sample of more than 170 radio sources.
Ros, E.
core +2 more sources