Fig. 3 | Communications Physics

Fig. 3

From: Experimental confirmation of the standard magnetorotational instability mechanism with a spring-mass analogue

Fig. 3

Time evolution and radial evolution of the ball’s angular momentum. a, b Time evolution of the ball’s angular momentum in the quasi-Keplerian or qK (solid body) flows. c, d Radial evolution of the ball’s angular momentum in the qK (solid body) flows. Experimental results for untethered, weak spring-tethered, and strong spring tethered, cases are shown in black, red, and blue, respectively. Predictions from solving Eqs. (4) and (5) for each of these cases are shown as corresponding dashed lines. Efficient angular momentum transport occurs only in the case of the qK flows using a weak-spring tether (red). All other cases show little angular momentum transport, as expected. The green dashed line shows the background flow angular momentum profile

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