A mechanism for extracting energy from a spinning black hole
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.
Historical — it happened, and the record is settled.
Subjects
- Relativistic jet · phenomenon · not located
- The Kerr solution and black hole spin · model · not located
- M87* - the supermassive black hole in Messier 87 · celestial body · Virgo Cluster, constellation Virgo as seen from Earth · not located
Evidence
Partly verified — Core facts are sourced; some optional detail is deliberately absent.
Electromagnetic extraction of energy from Kerr black holes
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.
Monthly Notices of the Royal Astronomical Society · 1977 · Partly verified
R. D. Blandford and R. L. Znajek, Monthly Notices of the Royal Astronomical Society 179, 433 (1977)
Recorded on Relativistic jet
- Heber Curtis records a curious straight ray in Messier 87
- Kerr finds the rotating solution
- A mechanism for extracting energy from a spinning black hole
- The Event Horizon Telescope observes M87* and Sagittarius A*
- The first image of a black hole shadow is published
- The M87* ring is imaged in polarised light
- A second epoch shows the ring persists and the bright spot moves
Related
Related because they share a subject in the Atlas — never because the text looks similar.
- A second epoch shows the ring persists and the bright spot moves · 2024
- The M87* ring is imaged in polarised light · 2021-03
- The first image of a black hole shadow is published · 2019-04-10
- The Event Horizon Telescope observes M87* and Sagittarius A* · 2017-04
- Kerr finds the rotating solution · 1963
- Heber Curtis records a curious straight ray in Messier 87 · 1918