A mechanism for extracting energy from a spinning black hole

Assembled from 31 blocks · 1 evidence · 31 related

1. Story
2. Roger Blandford and Roman Znajek described how magnetic field lines threading a rotating black hole can carry away its rotational energy electromagnetically, providing a way to power a jet from the hole itself rather than only from the accreting gas. It remains the leading explanation for relativistic jets, including the M87 jet Curtis had recorded in 1918, and it is one reason the spin of a black hole is an astrophysically consequential quantity rather than a curiosity.
3. Knowledge
4. The Kerr solution and black hole spin
5. Relativistic jet
6. M87* - the supermassive black hole in Messier 87
7. A mechanism for extracting energy from a spinning black hole
8. Connections
9. Relativistic jet
10. The Kerr solution and black hole spin
11. M87* - the supermassive black hole in Messier 87
12. Accretion disc
13. M87* - the supermassive black hole in Messier 87
14. Heber Curtis records a curious straight ray in Messier 87
15. A mechanism for extracting energy from a spinning black hole
16. The M87* ring is imaged in polarised light
17. The event horizon
18. The no-hair result
19. Innermost stable circular orbit
20. Kerr finds the rotating solution
21. A mechanism for extracting energy from a spinning black hole
22. Relativistic jet
23. Sagittarius A* - the black hole at the centre of the Milky Way
24. Heber Curtis records a curious straight ray in Messier 87
25. A mechanism for extracting energy from a spinning black hole
26. The Event Horizon Telescope observes M87* and Sagittarius A*
27. The first image of a black hole shadow is published
28. The M87* ring is imaged in polarised light
29. A second epoch shows the ring persists and the bright spot moves
30. Evidence
31. Describes the mechanism by which a magnetic field threading a rotating black hole extracts its rotational energy, the leading explanation for relativistic jets. V55 VERIFICATION BASIS: not consulted in session; no research tool was available. Volume and page are from recall and must be checked.