Jeans instability

E290120

Jeans instability is a gravitational phenomenon in astrophysics where regions within a gas cloud become unstable and collapse under their own gravity, leading to the formation of structures like stars and galaxies.

All labels observed (2)

Label Occurrences
Jeans instability canonical 3
Jeans instability in astrophysics 1

How this entity was disambiguated

Statements (49)

Predicate Object
instanceOf astrophysical instability ⓘ
gravitational instability ⓘ
appliesTo interstellar medium ⓘ
molecular clouds ⓘ
self-gravitating gas clouds ⓘ
assumes infinite homogeneous medium ⓘ
linear perturbation theory ⓘ
small perturbations ⓘ
cause gravitational collapse ⓘ
characterizedBy Jeans length ⓘ
Jeans mass ⓘ
criterion perturbation mass greater than Jeans mass ⓘ
perturbation size greater than Jeans length ⓘ
dependsOn gas density ⓘ
gas temperature ⓘ
mass of the perturbation ⓘ
size of the perturbation ⓘ
sound speed in the gas ⓘ
field astrophysics ⓘ
cosmology ⓘ
governingEquations Euler equation ⓘ
linked to: Euler equations

Poisson equation for gravity ⓘ
continuity equation ⓘ
fluid equations ⓘ
historicalPeriod early 20th century ⓘ
influencedBy magnetic fields ⓘ
rotation of the gas cloud ⓘ
turbulence ⓘ
namedAfter James Jeans ⓘ
namedEntity true ⓘ
occursIn early universe density fluctuations ⓘ
star-forming regions ⓘ
occursWhen self-gravity exceeds pressure support ⓘ
opposedBy pressure gradients ⓘ
relatedTo Jeans swindle ⓘ
cosmological perturbation theory ⓘ
gravitational collapse ⓘ
structure formation in the universe ⓘ
resultsIn formation of galaxies ⓘ
formation of stellar clusters ⓘ
fragmentation of gas clouds ⓘ
star formation ⓘ
stabilizedBy gas pressure ⓘ
sound waves ⓘ
thermal motions ⓘ
timescale free-fall time ⓘ
usedFor estimating minimum mass for star formation ⓘ
modeling fragmentation of molecular clouds ⓘ
understanding galaxy formation ⓘ

How these facts were elicited

Referenced by (4)

Full triples — surface form annotated when it differs from this entity's canonical label.

Jeans mass → relatedTo → Jeans instability ⓘ
James Jeans → knownFor → Jeans instability ⓘ
virial theorem → relatedTo → Jeans instability ⓘ
James Jeans → knownFor → Jeans instability in astrophysics ⓘ
subject linked to: Jeans
linked to: Jeans instability