In planetary science a streaming instability is a hypothetical mechanism for the formation of planetesimals in which the drag felt by solid particles orbiting in a gas disk leads to their spontaneous concentration into clumps which can gravitationally collapse.[1] Small initial clumps increase the orbital velocity of the gas, slowing radial drift locally, leading to their growth as they are joined by faster drifting isolated particles. Massive filaments form that reach densities sufficient for the gravitational collapse into planetesimals the size of large asteroids, bypassing a number of barriers to the traditional formation mechanisms. The formation of streaming instabilities requires solids that are moderately coupled to the gas and a local solid to gas ratio of one or greater. The growth of solids large enough to become moderately coupled to the gas is more likely outside the ice line and in regions with limited turbulence. An initial concentration of solids with respect to the gas is necessary to suppress turbulence sufficiently to allow the solid to gas ratio to reach greater than one at the mid-plane. A wide variety of mechanisms to selectively remove gas or to concentrate solids have been proposed. In the inner Solar System the formation of streaming instabilities requires a greater initial concentration of solids or the growth of solid beyond the size of chondrules.[2]
^Simon, Jacob B.; Blum, Jürgen; Birnstiel, Til; Nesvorny, David (2023). "Comets and Planetesimal Formation". arXiv:2212.04509.
^Cite error: The named reference Johansen_Jacquet_2015 was invoked but never defined (see the help page).
and 21 Related for: Streaming instability information
In planetary science a streaminginstability is a hypothetical mechanism for the formation of planetesimals in which the drag felt by solid particles...
instability can be understood more simply as the superposition of many counter-streaming beams. In this sense, it is like the two-streaminstability except...
Another possible mechanism for the formation of planetesimals is the streaminginstability in which the drag felt by particles orbiting through gas creates...
Anders; Davies, Melvyn B. (2017). "Planetesimal Formation by the StreamingInstability in a Photoevaporating Disk". The Astrophysical Journal. 839 (1):...
Avelino, Pedro P. (2010), "The physics of the relativistic counter-streaminginstability that drives mass inflation inside black holes", Physics Reports...
Dewan (6 August 2021). "A crucial ocean circulation is showing signs of instability. Its shutdown would have serious impacts on our weather". CNN. Retrieved...
production falls short of expectations or is affected by political instability, the streaming companies must incur the losses themselves. On the other hand...
instability in the mid-plane of a protoplanetary disk—or via the concentration and gravitational collapse of swarms of larger particles in streaming instabilities...
by dust. Icy particles within the early Kuiper belt experienced streaminginstability, in which they slowed down due to drag against the surrounding gas...
the gaps which form at the base of the ice sheet, and marine ice sheet instability (MISI) would occur. Even if the ice sheet is grounded below the sea level...
Combustion instabilities are physical phenomena occurring in a reacting flow (e.g., a flame) in which some perturbations, even very small ones, grow and...
and Pedro P. Avelino, "The physics of the relativistic counter-streaminginstability that drives mass inflation inside black holes" (2008), arXiv:0811...
An ionization instability is any one of a category of plasma instabilities which is mediated by electron-impact ionization. In the most general sense,...
A baroclinic instability is a fluid dynamical instability of fundamental importance in the atmosphere and ocean. It can lead to the formation of transient...
DELUXE EDITION OF THE WORLD IS IN YOUR WAY ALBUM; "CHELSEA" MUSIC VIDEO STREAMING". BraveWords. June 11, 2020. Retrieved June 24, 2021. "SPILL NEWS: THE...
form of random or counter-streaming motions (as opposed to rotation), is subject to the instability. The firehose instability is probably responsible for...
In this dense layer particles can grow by gravitational instability and streaminginstability to km-sized planetesimals. The third phase is the runaway...
causing the banking system some instability." Army of Thieves was released in the United States on October 29, 2021, via streaming on Netflix. On Rotten Tomatoes...
Global Information