โ Scribed by John F. Beacom
No coin nor oath required. For personal study only.
The cosmic stellar birth rate can be measured by standard astronomical techniques. It can also be probed via the cosmic stellar death rate, though until recently, this was much less precise. However, recent results based on measured supernova rates, and importantly, also on the attendant diffuse fluxes of neutrinos and gamma rays, have become competitive, and a concordant history of stellar birth and death is emerging. The neutrino flux from all past core-collapse supernovae, while faint, is realistically within reach of detection in Super-Kamiokande, and a useful limit has already been set. I will discuss predictions for this flux, the prospects for neutrino detection, the implications for understanding core-collapse supernovae, and a new limit on the contribution of type-Ia supernovae to the diffuse gamma-ray background.
๐ SIMILAR VOLUMES
This paper describes the derivation, behavior, and application of a model of growth based on elementary kinetic considerations. The model is based on an abbreviated version of the cell cycle in which first-order kinetics govern both production in a growing fraction and loss from the resting fraction