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The planetary spin and rotation period: A modern approach | | A. I. Arbab
; Saadia E. Salih
; Sultan H. Hassan
; Ahmed Agali
; Husam Abubaker
; | | Date: |
17 Jan 2013 | | Abstract: | Using a new approach, we have obtained a formula for calculating the rotation
period and radius of planets. In the ordinary gravitomagnetism the
gravitational spin ($S$) orbit ($L$) coupling, $vec{L}cdotvec{S}propto
L^2$, while our model predicts that $vec{L}cdotvec{S}propto frac{m}{M}
L^2$, where $M$ and $m$ are the central and orbiting masses, respectively.
Hence, planets during their evolution exchange $L$ and $S$ until they reach a
final stability at which $mSpropto ML$. Rotational properties of our planetary
system, binary pulsars and exoplanets are in agreement with our predictions.
The radius ($R$) and rotational period ($D$) of tidally locked planet at a
distance $a$ from its star, are related by, $D^2propto sqrt{frac{M}{m^3}}
R^3$ and that $Rpropto sqrt{frac{m}{M}} a$. | | Source: | arXiv, 1301.4720 | | Services: | Forum | Review | PDF | Favorites | |
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