Plots of velocity perturbations (arrows) and h v (contours) for steady-state hydrodynamic systems in full spherical geometry for l = m = 1 in the rapidly rotating limit. All quantities are computed in terms of an arbitrary velocity normalization (v0). Bright and dark colors correspond to positive and negative height perturbations, respectively. (A color version of this figure is available in the online journal.)
Normally computers speed up calculations. But with his new pen-and-paper formula Kevin Heng of the University of Bern, Switzerland, gets his results thousands of times faster than using conventional computer codes. The astrophysicist calculates the abundances of molecules (known as atmospheric chemistry) in exoplanetary atmospheres...
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