1 / 15

Roche limit

Roche limit. is the distance within which a celestial body, held together only by its own gravity, will disintegrate due to a second celestial body's tidal forces exceeding the first body’s gravitational self-attraction.

khuong
Download Presentation

Roche limit

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Roche limit is the distance within which a celestial body, held together only by its own gravity, will disintegrate due to a second celestial body's tidal forces exceeding the first body’s gravitational self-attraction. Inside the Roche limit, orbiting material will tend to disperse and form rings, while outside the limit, material will tend to coalesce. The term is named after Édouard Roche, the french astronomer who first calculated this limit in 1848

  2. Roche limit r

  3. Roche limit

  4. Roche limit

  5. Roche limit

  6. Roche limit

  7. Roche limit m1 m1 d m2 r

  8. 1 o

  9. Examples of Roche limits

  10. Examples of Roche limits

  11. (THE ROCHE LIMIT…) Generally …large natural bodies orbit beyond their Roche Limit; exceptions have other adhesive forces binding the object (e.g. human-made, low-orbit satellites around Earth!) The (major) rings of Saturn, Jupiter, Neptune and Uranus are all within their Roche limit  particles from crushed up former satellites?

  12. Energy generated by tidal movements  dissipated as heat Io (Jupiter’s innermost moon) – tidal forces  internal heat  powers extreme volcanic activity Europa (also Jupiter’s) – tidal heat  substantial sub-surface ocean  dark biospheres?

  13. e.g. ice volcanoes on Saturn’s moon Enceladus! ..also cryo-volcanism!

More Related