Does galaxy formation conserve mass and angular momentum?

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SUMMARY

The discussion centers on the conservation of mass and angular momentum during galaxy formation from a collapsing gas cloud. Participants assert that while total angular momentum is conserved in a closed system, individual particles may change their momentum. The original gas cloud and the resulting galaxy can have different angular momentum due to mass ejection during collapse. The conversation highlights the necessity of considering General Relativity and the role of dark matter in understanding these processes.

PREREQUISITES
  • Understanding of Newton's Third Law and its implications for momentum conservation
  • Familiarity with General Relativity and its effects on mass and energy flow
  • Knowledge of gas dynamics and the behavior of collapsing gas clouds
  • Concepts of dark matter and its influence on galaxy formation
NEXT STEPS
  • Study the principles of General Relativity in relation to angular momentum conservation
  • Explore the role of dark matter in cosmic structure formation
  • Investigate gas dynamics in astrophysical contexts, particularly during star and galaxy formation
  • Learn about the statistical mechanics of particle systems and their implications for angular momentum
USEFUL FOR

Astronomers, astrophysicists, and students of cosmology interested in the mechanics of galaxy formation and the conservation laws governing mass and angular momentum.

  • #31
And I was hoping I could just say... L = m.r.v... a-ha, I caught you! :D... I'm wiser now
 
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  • #32
fbs7 said:
(e) The whole thing is relativistic, so these are not easy equations
Relativistic effects should be negligible.
 

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