We consider the observational signature of the dynamical effects on the luminosity function of globular clusters. For the three best studied systems, in Milky Way, M31, and M87, there is a statistically significant difference between the inner and outer population of globular clusters. In all cases the inner clusters are on average brighter than the outer clusters (0.26 < ∆m0 < 0.84) and have a...

We study the evolution of the curvature perturbation on the super-horizon scales starting from the inflationary epoch until there remains only a single dynamical degree of freedom, presureless matter, in the universe. We consider the cosmic inflation driven by a multiple number of the inflaton fields, which decay into both radiation and pressureless matter components. We present a complete set ...

I review recent observations on the evolution of quasars, describe new surveys for quasars at z > 5 and for quasars with z > 3.3 down to luminosities corresponding to L* galaxies, and note the possible connection between the evolution of the star formation rate in young galaxies and the evolution of quasars.

We model the evolution of canonical pulsars from the death line to millisecond pulsars through the Xray neutron star stage of accretion from a low-mass companion. We trace this evolution in magnetic field strength starting at B = 10 to 10 G and in period of about 1 s to milliseconds. Important factors are accretion rate and the decay rate of the magnetic field. A broad swathe is traced in the B...