Sołtan argument [SEP] named after
Sołtan argument
The Sołtan argument is an astrophysical theory outlined in 1982 by Polish astronomer Andrzej Sołtan. It maintains that if quasars were powered by accretion onto a supermassive black hole, then such supermassive black holes must exist in our local universe as "dead" quasars.
History.
As early as 1969, Donald Lynden-Bell wrote a paper suggesting that "dead quasars" were found at the center of the Milky Way and nearby galaxies by arguing that given the quasar-number counts, luminosities, distances, and
- Sound reduction index
- Sound transmission class
- Source counts
- Source field
- Source function
- Southern Hemisphere Auroral Radar Experiment
- Soviet Physics Uspekhi
- Sołtan argument
- Space
- Space Weather Prediction Center
- Space charge
- Space group
- Space physics
- Spacequake
- Spaceship Earth (detector)
- Spacetime
- Spacetime algebra
- Spacetime symmetries
- Spacetime topology
- Spaghettification
- Spalart–Allmaras turbulence model
- Spallation
- Spallation