Dr. Ramin G. Daghigh
Department of Chemistry and Physics, Arkansas State University
Abstract: The relativistic viscous fluid equations describing
the outflow of high temperature matter created via Hawking radiation from
microscopic black holes are solved numerically for a realistic equation
of state. We focus on black holes with initial temperatures greater
than 100 GeV and lifetimes less than 6 days. The spectra of direct
photons and photons from neutral pion decay are calculated for energies
greater than 1 GeV. The most promising route for the observation of microscopic
black holes is to search for point sources emitting gamma rays of ever-increasing
energy. We also calculate the spectra of all three flavors of neutrinos
arising from direct emission from the fluid at the neutrino-sphere and
from the decay of pions and muons from their decoupling at much larger
radii and smaller temperatures for neutrino energies between 1 GeV and
the Planck energy. The results for neutrino spectra may be applicable
for the last few hours and minutes of the lifetime of a microscopic black
hole.