Articles with "gravitational instability" as a keyword



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Gravitational instability in isotropic MHD plasma waves

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Published in 2018 at "Journal of Astrophysics and Astronomy"

DOI: 10.1007/s12036-018-9518-5

Abstract: The effect of compressive viscosity, thermal conductivity and radiative heat-loss functions on the gravitational instability of infinitely extended homogeneous MHD plasma has been investigated. By taking in account these parameters we developed the six-order dispersion… read more here.

Keywords: instability; plasma; gravitational instability; isotropic ... See more keywords
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Gravitational instability and its scaling relation of a partially miscible two‐component system in a porous medium

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Published in 2021 at "International Journal of Heat and Mass Transfer"

DOI: 10.1016/j.ijheatmasstransfer.2021.120899

Abstract: Abstract In the context of the co-injection of CO2 and impurities, such as H2S, SOx and N2, in the carbon capture and geological sequestration, the effect of the double diffusion on the onset and the… read more here.

Keywords: gravitational instability; density; stability; scaling relation ... See more keywords
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Impact of tectonic rafts’ gravitational instability on fault reactivation and geometry

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Published in 2020 at "Journal of Structural Geology"

DOI: 10.1016/j.jsg.2019.103916

Abstract: Abstract Downslope gravitational instability of tectonic rafts has been identified as deforming large volumes of post-salt strata on the passive continental margins. Detailed mapping of fault throw and geometry using three-dimensional (3D) seismic reflection data… read more here.

Keywords: fault; gravitational instability; strata; geometry ... See more keywords
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Analytic growth rate of gravitational instability in self-gravitating planar polytropes

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Published in 2018 at "Journal of Fluid Mechanics"

DOI: 10.1017/jfm.2018.837

Abstract: Gravitational instability is a key process that may lead to fragmentation of gaseous structures (sheets, filaments, haloes) in astrophysics and cosmology. We introduce here a method to derive analytic expressions for the growth rate of… read more here.

Keywords: rate gravitational; gravitational instability; self gravitating; growth rate ... See more keywords
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Key connection between gravitational instability in physical gels and granular media

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Published in 2022 at "Scientific Reports"

DOI: 10.1038/s41598-022-10045-x

Abstract: We study gravitationally-driven (Rayleigh–Taylor-like) instability in physical gels as a model for the behavior of granular media falling under gravity; physical gels have a structural elasticity and may be fluidized, capturing both the solid and… read more here.

Keywords: instability; gravitational instability; granular media; instability physical ... See more keywords
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Nonlinear dynamics of gravitational instability in complex viscoelastic astrofluids

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Published in 2018 at "AIP Advances"

DOI: 10.1063/1.5043301

Abstract: The nonlinear evolutionary dynamics of gravitational instability in a complex self-gravitating viscoelastic nonthermal polytropic astrofluid is semi-analytically investigated on the Jeansian scales of space and time. The key effects out of fluid buoyancy, thermal fluctuations,… read more here.

Keywords: gravitational instability; analysis; nonlinear dynamics; dynamics gravitational ... See more keywords
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From lenticulars to blue compact dwarfs: the stellar mass fraction is regulated by disc gravitational instability

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Published in 2020 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/staa3245

Abstract: The stellar-to-halo mass relation (SHMR) is not only one of the main sources of information we have on the connection between galaxies and their dark matter haloes, but also an important indicator of the performance… read more here.

Keywords: stellar mass; mass fraction; disc gravitational; gravitational instability ... See more keywords
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On the ALMA observability of nascent massive multiple systems formed by gravitational instability

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Published in 2019 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/stz1585

Abstract: Massive young stellar object (MYSOs) form during the collapse of high-mass pre-stellar cores, where infalling molecular material is accreted through a centrifugally-balanced accretion disc that is subject to efficient gravitational instabilities. In the resulting fragmented… read more here.

Keywords: multiple systems; disc; alma observability; gravitational instability ... See more keywords
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Gravitational Instability in the Dust Layer of a Protoplanetary Disk with Interaction between the Layer and the Surrounding Gas

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Published in 2018 at "Solar System Research"

DOI: 10.1134/s0038094618060059

Abstract: We consider gravitational instability of the dust layer in the midplane of a protoplanetary disk with turbulence and shear stresses between the gas in the disk and that in the dust layer. We solve a… read more here.

Keywords: gravitational instability; disk; layer; gas ... See more keywords