An Etymological Dictionary of Astronomy and Astrophysics
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فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

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Number of Results: 2 Search : inspiral
extreme mass ratio inspiral (EMRI)
  فروپیچه با وابر ِ استوم ِ جرم   
forupicé bâ vâbar-e ostom-e jerm

Fr.: orbite plongeante d'un trou noir binaire, au rapport de masse extrême   

A compact stellar remnant (e.g., a → white dwarf, → neutron star, or → black hole) that undergoes → inspiral into a much more massive object (→ supermassive black hole found → galactic centers). EMRIs are potential sources of low-frequency → gravitational waves. Predictions of the EMRI event rates span a wide range, from ~ 10-9 to 10-6 yr-1 per galaxy (Merritt et al. 2011, Physical Review D 84, 044024). See also → resonant relaxation.

extreme; → mass; → ratio; → inspiral.

inspiral
  فروپیچه   
forupicé

Fr.: orbite plongeante en spirale   

The inward spiraling of an orbiting → black hole toward a central → supermassive black hole (SMBH) as it radiates → gravitational wave. As a result, the orbit decays, and the orbital period decreases, leading to the → merging of both black holes as they get close enough. Once merged, the single hole goes through a stage called → ringdown.

in; → spiral.