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We present results from the first year of a campaign to characterize and monitor the optical turbulence profile at the SAAO Sutherland observing station in South Africa. A MASS-DIMM (MultiAperture Scintillation Sensor - Differential Image…

Instrumentation and Methods for Astrophysics · Physics 2013-10-29 Laure Catala , Steven M. Crawford , David A. H. Buckley , Tim Pickering , Richard Wilson , Tim Butterley , Harry Shepherd , Fred Marang , Patrick Matshaya , Chantal Fourie

Turbulence is ubiquitous in astrophysical fluids. Therefore it is necessary to study magnetic reconnection in turbulent environments. The model of fast turbulent reconnection proposed in Lazarian & Vishniac 1999 has been successfully tested…

Astrophysics of Galaxies · Physics 2011-12-16 A. Lazarian

In this article, we present experimental and numerical techniques to investigate the transfer, transport, and reaction of a chemical species in the vicinity of rising bubbles. In the experiment, single oxygen bubbles of diameter d b = 0.55…

We have simulated the evolution of tidal debris in the Galactic halo in order to guide our ongoing survey to determine the fraction of halo mass accreted via satellite infall. Contrary to naive expectations that the satellite debris will…

Magnetically confined fusion plasmas exhibit predator-prey-like cyclic oscillations through the self-regulating interaction between drift-wave turbulence and zonal flow. To elucidate the detailed mechanism and causality underlying this…

Plasma Physics · Physics 2026-01-26 Tomohiro Tanogami , Makoto Sasaki , Tatsuya Kobayashi

Sub-mm observations of protoplanetary disks now approach the acuity needed to measure the turbulent broadening of molecular lines. These measurements constrain disk angular momentum transport, and furnish evidence of the turbulent…

Solar and Stellar Astrophysics · Physics 2015-05-28 Jacob B. Simon , Philip J. Armitage , Kris Beckwith

We analyze a set of bidirectional wave experiments in a linear wave flume of which some are conducive to integrable turbulence. In all experiments the wavemaker forcing is sinusoidal and the wave motion is recorded by seven high-resolution…

Fluid Dynamics · Physics 2022-10-11 Ivan Redor , Hervé Michallet , Nicolas Mordant , Eric Barthélemy

We present an analysis of intermittent processes occurred during the impulsive phase of the flare SOL2012-03-13, using hard X-rays and submillimeter radio data. Intermittency is a key characteristic in turbulent plasmas and have been a…

Solar and Stellar Astrophysics · Physics 2016-06-22 C. Guillermo Giménez de Castro , Paulo J. A. Simões , Jean-Pierre Raulin , Odilon M. Guimarães

Multi-wavelength light curves of bright gamma-ray blazars (e.g., 3C 454.3) reveal strong correlations across wavebands, yet striking dissimilarities in the details. This conundrum can be explained if the variable flux and polarization…

High Energy Astrophysical Phenomena · Physics 2012-01-27 Alan P. Marscher

Atmospheric turbulence degrades the performance of free-space optical (FSO) communication and remote sensing systems by introducing phase and intensity distortions. While a majority of research focuses on mitigating these effects to ensure…

We use local numerical simulations to study a vertically stratified accretion disk with a resistive mid-plane that damps magnetohydrodynamic (MHD) turbulence. This is an idealized model for the dead zones that may be present at some radii…

Solar and Stellar Astrophysics · Physics 2016-07-27 Daniel Gole , Jacob B. Simon , Stephen H. Lubow , Philip J. Armitage

A recent paper by Stanimirovic etal (2008) presents quit interesting results from HI observations of the Magellanic Stream (MS) tip. The high spatial resolution of the data reveals rich and complex morphological and kinematic structures;…

Astrophysics · Physics 2008-09-29 Itzhak Goldman

It has been suggested that the upwelling branch of the abyssal overturning circulation is characterized by strong flows driven by turbulence along sloping topography. The Boundary Layer Turbulence field campaign has provided direct evidence…

Atmospheric and Oceanic Physics · Physics 2025-09-09 Yidongfang Si , Raffaele Ferrari , Gunnar Voet

A pair of non-thermal radio bubbles recently discovered in the inner few hundred parsecs of the Galactic center bears a close spatial association with elongated, thermal X-ray features called the X-ray chimneys. While their morphology,…

Astrophysics of Galaxies · Physics 2021-06-02 Mengfei Zhang , Zhiyuan Li , Mark R. Morris

Observations indicate that turbulence in the interstellar medium (ISM) is supersonic ($M_{\rm turb}\gg1$) and strongly magnetized ($\beta\sim0.01-1$), while in the intracluster medium (ICM) it is subsonic ($M_{\rm turb}\lesssim1$) and…

Astrophysics of Galaxies · Physics 2022-03-09 Hyunjin Cho , Dongsu Ryu , Hyesung Kang

Turbulence and turbulent mixing in natural fluids begins with big bang turbulence powered by spinning combustible combinations of Planck particles and Planck antiparticles. Particle prograde accretions on a spinning pair releases 42% of the…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Carl H. Gibson

Diffusive shock acceleration (DSA) at relativistic shocks is widely thought to be an important acceleration mechanism in various astrophysical jet sources, including radio-loud active galactic nuclei such as blazars. Such acceleration can…

High Energy Astrophysical Phenomena · Physics 2016-09-21 Matthew G. Baring , Markus Böttcher , Errol J. Summerlin

Astrophysical fluids, including interstellar and interplanetary medium, are magnetized and turbulent. Their appearance, evolution, and overall properties are determined by the magnetic turbulence that stirs it. We argue that examining…

Astrophysics · Physics 2009-11-13 A. Lazarian , A. Beresnyak , H. Yan , M. Opher , Y. Liu

Restoration and enhancement are essential for improving the quality of videos captured under atmospheric turbulence conditions, aiding visualization, object detection, classification, and tracking in surveillance systems. In this paper, we…

Computer Vision and Pattern Recognition · Computer Science 2025-03-25 Paul Hill , Zhiming Liu , Nantheera Anantrasirichai

Plasma turbulence is the dominant transport mechanism for heat and particles in magnetized plasmas in linear devices and tokamaks, so the study of turbulence is important in limiting and controlling this transport. Linear devices provide an…

Plasma Physics · Physics 2017-11-17 Jarrod Leddy , Ben Dudson
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