Results 91 to 100 of about 499,412 (213)

Neural Surrogate HMC: On Using Neural Likelihoods for Hamiltonian Monte Carlo in Simulation‐Based Inference

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 5, October 2026.
Abstract Bayesian inference methods such as Markov Chain Monte Carlo (MCMC) typically require repeated computations of the likelihood function, but in some scenarios, this is infeasible and alternative methods are needed. Simulation‐based inference methods address this problem by using machine learning to amortize computations.
L. M. Wolniewicz, P. Sadowski, C. Corti
wiley   +1 more source

Computations on the interaction of an interplanetary shock with the Earth's magnetosphere

Astrophysics and Space Science, 1977
We present the results of a one-dimensional computer simulation of the interaction between interplanetary shocks and the Earth's magnetosphere. The position of the bowshock as a function of solar wind velocity and interplanetary field direction is studied.
Pater, I. de, Weber, W.J.
openaire   +3 more sources

Correlation of Diffusion Upstream of Shocks with Their Magnetic Compression: An Application of IMAP’s Living Catalog of Interplanetary Shocks

The Astrophysical Journal Supplement Series
We apply an automated routine to detect and catalog interplanetary shocks observed by the Interstellar Mapping and Acceleration Probe (IMAP). Using this catalog, we derive the upstream diffusion coefficient corresponding to 1 MeV protons along each shock’
M. E. Cuesta, T. S. Horbury, J. S. Rankin, N. Subashchandar, L. Zhao, D. Turner, S. Raptis, H. A. Farooki, B. L. Shrestha, D. J. McComas, N. A. Schwadron, E. R. Christian, M. Gkioulidou, C. M. S. Cohen, S. Kasapis, L. Y. Khoo, N. K. Walia, R. N. Jain, S. Pak, M. M. Shen, E. J. Zirnstein, J. R. Szalay, G. Livadiotis, N. V. Sarlis, J. G. Mitchell, Z. Xu, G. D. Muro, J. Giacalone, W. H. Matthaeus, G. P. Zank   +29 more
doaj   +1 more source

Predicting the Arrival Time of an Interplanetary Shock Based on DSRT Spectrum Observations for the Corresponding Type II Radio Burst and a Blast Wave Theory

The Astrophysical Journal
Since fast head-on coronal mass ejections and their associated shocks represent potential hazards to the space environment of the Earth and even other planets, forecasting the arrival time of the corresponding interplanetary shock is a priority in space ...
Ran Li, Xinhua Zhao, Jingye Yan, Lin Wu, Yang Yang, Xuning Lv, Shiwei Feng, Mengsi Ruan, Nanbin Xiang, Yidan Liang   +9 more
doaj   +1 more source

On the acceleration of ions by interplanetary shock waves. 1: Single encounter considerations [PDF]

, 1981
The acceleration of energetic ions in interplanetary magnetosonic fast-mode shock waves was studied via analytical modeling and numerical simulations.
Pesses, M. E.
core  

Imaging and Radio Signatures of Shock–Plasmoid Interaction

The Astrophysical Journal Letters
Understanding how shocks interact with coronal structures is crucial for understanding the mechanisms of particle acceleration in the solar corona and inner heliosphere.
Pankaj Kumar, Judith T. Karpen, P. K. Manoharan, N. Gopalswamy   +3 more
doaj   +1 more source

Atypical Particle Heating at a Supercritical Interplanetary Shock [PDF]

, 2010
We present the first observations at an interplanetary shock of large amplitude (> 100 mV/m pk-pk) solitary waves and large amplitude (approx.30 mV/m pk-pk) waves exhibiting characteristics consistent with electron Bernstein waves.
Wilson, Lynn B., III
core  

Characteristics of plasma turbulence and radio emission from an interplanetary shock wave

, 2007
Aims.We investigate the characteristics of energetic electron beams, plasma turbulence and radio emission from interplanetary shock waves. Methods.Numerical calculations of spectra and Landau damping of hot plasma eigen oscillations in the ...
V. M. Tomozov, V. V. Tirsky, V. G. Ledenev, E. Aguilar-Rodriguez   +3 more
core   +1 more source

Ion‐Acoustic Waves Associated With Interplanetary Shocks

Geophysical Research Letters
AbstractIon‐acoustic waves (IAWs) commonly occur near interplanetary (IP) shocks. These waves are important because of their potential role in the dissipation required for collisionless shocks to exist. We study IAW occurrence statistically at different heliocentric distances using Solar Orbiter to identify the processes responsible for IAW generation ...
J. J. Boldú, D. B. Graham, M. Morooka, M. André, Yu. V. Khotyaintsev, A. Dimmock, D. Píša, J. Souček, M. Maksimovic, P. Louarn, A. Fedorov, G. Nicolaou, C. Owen   +12 more
openaire   +6 more sources

Post-shock spikes: A new feature of proton and alpha enhancements associated with an interplanetary shock wave [PDF]

, 1974
Abrupt and prolonged enhancements in the intensities of 100 to approximately 2000 keV nucleon protons and alpha particles observed in interplanetary space are interpreted as particle populations confined between an interplanetary shock front and a ...
Fan, C. Y., Gloeckler, G., Hovestadt, D., Ipavich, F. M.   +3 more
core