Gamma-Ray Bursters (GRBs)
Gamma-ray bursters are unknown sources of short bursts of gamma-rays.
We do not really know about and understand Gamma-ray bursters.
We can guess about them and most people subscribe to the cosmological model.
(See GRBs page,
GRB angular distribution page,
and GRB spectra for support
given to the cosmological models.)
Cosmological GRBs are expected to produce relativistic fireballs
with temperature on order of 100 MeV and an expanding
shock wave shell with relativistic factor of about 100.
On the order of a solar mass is converted to this fireball
on a time scale of roughly a second.
GRBs are expected to produce significant fluxes of neutrinos
from the approximately 100 MeV thermal spectrum
and from accelerated protons producing pions by photoproduction
on the radiations fields present.
These radiation fields include, the thermal radiation, synchrotron
radiation for accelerated electrons, Compton-up-converted versions
of these original fields.
The detection of neutrinos from GRBs would help immensely in understanding
the highly relativistic phenomenon.
We can learn much about GRBs from detecting their neutrinos
and the sharp time duration of the pulses allow a number
of interesting neutrino physics experiments and tests of relativity
and observations of relativistic phenomena.
more to come this is a place holder
One does a coincidence with monitors for GRBs
(i.e. Gamma-Ray Burst Timing Network )
for neutrino events pointing in the same direction and near the
same time for each GRB.
Reference to Papers relating to detecting neutrino from GRBs:
Title: High Energy Neutrinos from Cosmological Gamma-Ray Burst Fireballs
Authors: Eli Waxman and John Bachall (Princeton)
KM3 a telescope designed to detect and identify point sources
of high-energy (greater than 1 TeV) neutrinos
This page is currently under construction.)
the Neutrino (KM3)
Return to the Smoot Group page
for a complete description of Dr. Smoot's group's research activities.