3 papers
astro-ph2000
Dust versus Supernova Cosmology
Tomonori Totani
Here we present some critical discussions about the systematic uncertainty by dust extinction in the recent cosmological results of high-redshift Type Ia supernovae. First we argue…
astro-ph1998
Gamma-Ray Bursts from Neutron Star Mergers and Evolution of Galaxies
Tomonori TOTANI
Most of proposed models of cosmological gamma-ray bursts (GRBs) are associated to gravitational collapses of massive stars, and hence evolution of the GRB rate, which is crucially…
astro-ph1997
Luminosity Density Evolution in the Universe and Cosmological Parameters
Tomonori Totani
Star formation history in galaxies is strongly correlated to their present-day colors and the Hubble sequence can be considered as a sequence of different star formation history. T…