http://philosophy-of-cosmology.ox.ac.uk/instability-problem.html WebAug 20, 2024 · In order to describe the phenomenon of star formation, Jeans proposed a mechanism that bears his name ' Jeans instability '. In his seminal paper [ 1 ], Jeans …

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WebCriterion of the Jeans instability of interstellar gas clouds that are gravitationally coupled with weakly interacting massive particles is revisited. It is established that presence of … WebNov 26, 2014 · The Jeans instability of the sound mode in normal fluids that is caused by a gravitational field is a well-known phenomenon [ 1 ]. It exhibits itself in astrophysical scenarios of aggregation of masses and galaxy formation. identity my maytag washing machine

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WebJ is the Jeans length. All scales larger than J are gravitationally unstable. It is common to recast the above criteria in terms of the total mass involved. The mass contained within a … In stellar physics, the Jeans instability causes the collapse of interstellar gas clouds and subsequent star formation, named after James Jeans. It occurs when the internal gas pressure is not strong enough to prevent gravitational collapse of a region filled with matter. For stability, the cloud must be in hydrostatic … See more The Jeans mass is named after the British physicist Sir James Jeans, who considered the process of gravitational collapse within a gaseous cloud. He was able to show that, under appropriate conditions, a cloud, or part of one, would … See more Jeans' length is the critical radius of a cloud (typically a cloud of interstellar molecular gas and dust) where thermal energy, which … See more Jeans instability can also give rise to fragmentation in certain conditions. To derive the condition for fragmentation an adiabatic process is assumed in an ideal gas and also a … See more The Jeans' length is the oscillation wavelength (respectively, Jeans' wavenumber, $${\textstyle k_{\text{J}}}$$) below which stable oscillations rather than gravitational … See more • Bonnor–Ebert mass • Langmuir waves (similar waves in a plasma) See more WebJeans criterium: If gravity wins over pressure, the cloud is unstable To be unstable, cloud needs to be massive, compact, and cold Large molecular clouds are marginally stable, … identity mywebrootanywhere