Radiation in the Universe
- photon redshifts
- (sketched on balloon analogy)
- redshift recordholders: QSO at z=6.4 ; GRB at z=8.2; photometric evidence for galaxies at z=8-8.5;
- radiation energy density
- radiation pressure
The Cosmic Equation of State
Minimally Realistic(?) Cosmic Histories
- cosmic ingredients
- limiting cases: matter, radiation, curvature, Lambda domination
