Results 31 to 40 of about 48,368 (320)

Streaming Instabilities in Protoplanetary Disks [PDF]

The Astrophysical Journal, 2005
Interpenetrating streams of solids and gas in a Keplerian disk produce a local, linear instability. The two components mutually interact via aerodynamic drag, which generates radial drift and triggers unstable modes. The secular instability does not require self-gravity, yet it generates growing particle density perturbations that could seed ...
Youdin, Andrew N., Goodman, Jeremy
openaire   +2 more sources

Spatiotemporal dynamics of ultrarelativistic beam-plasma instabilities

Physical Review Research, 2022
An electron or electron-positron beam streaming through a plasma is notoriously prone to microinstabilities. For a dilute ultrarelativistic infinite beam, the dominant instability is a mixed mode between longitudinal two-stream and transverse ...
P. San Miguel Claveria, X. Davoine, J. R. Peterson, M. Gilljohann, I. Andriyash, R. Ariniello, C. Clarke, H. Ekerfelt, C. Emma, J. Faure, S. Gessner, M. J. Hogan, C. Joshi, C. H. Keitel, A. Knetsch, O. Kononenko, M. Litos, Y. Mankovska, K. Marsh, A. Matheron, Z. Nie, B. O'Shea, D. Storey, N. Vafaei-Najafabadi, Y. Wu, X. Xu, J. Yan, C. Zhang, M. Tamburini, F. Fiuza, L. Gremillet, S. Corde   +31 more
doaj   +1 more source

Can dust coagulation trigger streaming instability?

, 2014
Streaming instability can be a very efficient way of overcoming growth and drift barriers to planetesimal formation. However, it was shown that strong clumping, which leads to planetesimal formation, requires a considerable number of large grains.
Drazkowska, Joanna, Dullemond, Cornelis P.   +1 more
core   +1 more source

A Method of Performance Optimization for Distributed Stream Data Processing in Vehicle Data Peak Scenario

Kongzhi Yu Xinxi Jishu, 2022
In the field of rail transit, vehicle intelligent operation and maintenance system uses various big data technologies to realize real-time calculation and analysis of vehicle status data.
TANG Pengfei, HU Weimin, YANG Yongtao
doaj   +3 more sources

Evidence for universality in the initial planetesimal mass function

, 2017
Planetesimals may form from the gravitational collapse of dense particle clumps initiated by the streaming instability. We use simulations of aerodynamically coupled gas-particle mixtures to investigate whether the properties of planetesimals formed in ...
Armitage, Philip J., Li, Rixin, Simon, Jacob B., Youdin, Andrew N.   +3 more
core   +1 more source

Streaming instabilities in converging geometry [PDF]

Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources III, 2019
We present an investigation into counter-streaming electron beams converging towards, and diverging from, a single point in two dimensions, leading to two-stream and current filamentation instabilities, which have radial and azimuthal density modulations, respectively.
Inigo Gamiz, Lucas I., Ersfeld, Bernhard, Yoffe, Samuel R., Cairns, R. Alan, Jaroszynski, Dino A.   +4 more
openaire   +2 more sources

Streaming cold cosmic ray back-reaction and thermal instabilities across the background magnetic field

, 2012
Using the multi-fluid approach, we investigate streaming and thermal instabilities of the electron-ion plasma with homogeneous cold cosmic rays drifting perpendicular to the background magnetic field.
Anatoly K. Nekrasov, Bogdanović, Braginskii, Cavagnolo, Conselice, Dzhavakhishvili, Everett, Kuwabara, Lontano, Mohsen Shadmehri, Nekrasov, Nekrasov, Nekrasov, Nekrasov, O'Dea, Parrish, Riquelme, Riquelme, Sharma, Sharma, Tozzi, Yusef-Zadeh, Zweibel   +22 more
core   +1 more source

Two-stream instabilities in plasmas [PDF]

Methods and Applications of Analysis, 2000
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Cordier, Stéphane, Grenier, Emmanuel, Guo, Yan   +2 more
openaire   +3 more sources

Nonlinear Development of Streaming Instabilities In Strongly Magnetized Plasmas

, 2009
The nonlinear development of streaming instabilities in the current layers formed during magnetic reconnection with a guide field is explored. Theory and 3-D particle-in-cell simulations reveal two distinct phases. First, the parallel Buneman instability
A. A. Galeev, A. A. Galeev, H. Che, J. F. Drake, M. Swisdak, P. H. Yoon   +5 more
core   +1 more source

Electron Instabilities Driven by Beaming Electrons with Anisotropic Temperatures in High-beta Plasmas

The Astrophysical Journal
Electron beams are ubiquitous in the heliosphere and dominate the electron heat flux. Large heat fluxes can excite microinstabilities, which are widely regarded as the primary mechanism regulating heat transport in the solar wind.
Ye Yu, Jinsong Zhao, Chen Shi, Huasheng Xie   +3 more
doaj   +1 more source