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特長基線干涉儀

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Visualizing ray around a Kerr black hole

圖片來源: Hung-Yi Pu

"Odyssey_Edu" is an educational software is developed for visualizing the ray around a Kerr black hole (available at https://odysseyedu.wordpress.com/).

The above image (created by Odyssey_Edu) demonstrates the effect of the frame-dragging, an effect caused by the rotation of spacetime around a Kerr black hole! Due to this effect, light rays must co-rotate in the same direction that black hole rotates when they are in the ergosphere (the outer white oblate surface represent the static limit: the outer edge of the ergosphere).