Results 61 to 70 of about 458,052 (359)
Publications of the Astronomical Society of the Pacific, 1996 Ap95 differs from Ap91 to Ap94 primarily in Ap number. That is, it once again attempts to highlight some areas of our mutual science where a major event has occurred during the year (a possible solution of the Type II supernova problem, the faintness of quasar host galaxies, and the collision of Shoemaker-Levy 9 with Jupiter), but also to focus on some
Trimble, Virginia, Leonard, Peter JT
openaire +3 more sources
Visible Shapes of Black Holes M87* and SgrA*
Universe, 2020 We review the physical origins for possible visible images of the supermassive black hole M87* in the galaxy M87 and SgrA* in the Milky Way Galaxy. The classical dark black hole shadow of the maximal size is visible in the case of luminous background ...
Vyacheslav I. Dokuchaev +1 more
doaj +1 more source
Publications of the Astronomical Society of the Pacific, 1997 The loudest astronomical headlines of the year came from both very near (planets orbiting stars in the solar neighborhood) and very far (galaxies and parts of galaxies at redshifts of 1 to 3 and more). We explore these and other happenings in our Solar System (Galileo at Jupiter, Comet Hyakutake), Milky Way (the bursting pulsar, spotted stars), Local ...
Trimble, Virginia, McFadden, Lucy Ann
openaire +3 more sources
Proton Acceleration with Relativistic Electromagnetic Shock
Advanced Science, EarlyView.New Ion Acceleration Mechanism! A novel cosmic‐ray proton acceleration mechanism is proposed, where relativistic electromagnetic shocks accelerate protons transversely. Hamiltonian analysis yields a scaling law linking the proton energy to the minimum longitudinal thickness of the shock.
Ting Xiao +5 more
wiley +1 more source
, 2004 Radio emission has been detected from all the stages of stellar evolution across the HR Diagram. Its presence reveals both astrophysical phenomena and stellar activity which, otherwise, would not be detectable by other means.
Paredes, Josep M.
core +2 more sources
Precision laboratory UV and IR wavelengths for cosmological and astrophysical applications [PDF]
, 2007 The quality of astronomical spectra is now so high that the accuracy of the laboratory data is getting more and more important for the analysis and interpretation.
Aldenius, M., Johansson, S.
core +4 more sources
EXONEST: The Bayesian Exoplanetary Explorer
Entropy, 2017 The fields of astronomy and astrophysics are currently engaged in an unprecedented era of discovery as recent missions have revealed thousands of exoplanets orbiting other stars.
Kevin H. Knuth +6 more
doaj +1 more source
A Periodic Error Correction Method for Terahertz Coded‐Aperture Imaging
Advanced Intelligent Systems, EarlyView.A physics‐constrained unsupervised learning framework with periodic error correction is proposed for terahertz coded‐aperture imaging. The method improves reconstruction robustness against noise and model mismatch, while reducing reliance on large‐scale labeled data.
Hongxu Wu +8 more
wiley +1 more source
Artificial Intelligence‐Assisted Target Design for High‐Intensity Laser‐Driven Neutron Sources
Advanced Intelligent Systems, EarlyView.This study presents an artificial intelligence (AI)‐assisted target design that combines particle‐in‐cell simulations with gradient ascent algorithm to optimize laser‐driven neutron sources. By enhancing the sheath electric field, the optimized structure increases neutron yield by a factor of 4,000.
Youjing Wang +7 more
wiley +1 more source
Universe, 2020 The investigation scrutinizes the circulation of the large-scaled fluxes of ultrarelativistic electrons near the neutron stars. This work focuses on the effects that occur during the adjustment of the strong electromagnetic field near the X-ray pulsars ...
Alexander Dubov +2 more
doaj +1 more source