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Runaway stars within the Milky Way may reveal dark matter’s hidden structure

Astronomers have chased hypervelocity stars for more than a century. These rare objects move so fast that the Milky Way ...
JSTOR Daily

AN ANALYTICAL STUDY OF THE KELVIN-HELMHOLTZ INSTABILITIES OF COMPRESSIBLE, MAGNETIZED TANGENTIAL VELOCITY DISCONTINUITIES WITH GENERALIZED POLYTROPE LAWS

The linear Kelvin-Helmholtz instability of tangential velocity discontinuities in high velocity magnetized plasmas with isotropie or anisotropic pressure is investigated. A new analytical technique ...

Finding runaway stars to help map dark matter in the Milky Way

Hypervelocity stars have, since the 1920s, been an important tool that allows astronomers to study the properties of the ...
Oil

Relative velocity factor advances internal tee erosion prediction

Development of a relative velocity factor comparing inlet flow rates of gas pipeline tees can predict the maximum erosion position inside the tee. A simulation model combining the k-ε turbulent and ...
Purdue University

Motion on a curvy track

Velocity is always TANGENT to the path. Acceleration, in general, has BOTH tangential and normal components. The normal component of acceleration always points INWARD to the path. The tangential ...