Abstract
Supernova neutrino bursts have been observed from extragalactic distances. This note addresses the question of how gravitational lensing could distort the information in the burst. We apply the gravitational lens hypothesis to try to understand the time and brightness structure of the SN1987A neutrino observations. Estimates of a possible lensing mass and alignment are made. These estimates suggest a path to verification.
Highlights
Observations of neutrinos from gravitational stellar collapse, a supernova, has the ability to peer into the heart of a transient critical event in the evolution of our universe
In a few seconds a mature massive star transforms into a neutron star or black hole releasing most of the binding energy as neutrinos
The close arrival time between neutrinos and light [1,2] put bounds on possible violations of the equivalence principle, including the Shapiro delay [3], which is estimated at 4.8 months for both light and neutrinos
Summary
Observations of neutrinos from gravitational stellar collapse, a supernova, has the ability to peer into the heart of a transient critical event in the evolution of our universe. In a few seconds a mature massive star transforms into a neutron star or black hole releasing most of the binding energy as neutrinos. The subsequent explosion ejects the heavy elements into interstellar space and creates those beyond the nuclear binding energy peak. Observation of these neutrinos can tell us a great deal about the mechanism unless they are distorted en route to the detection. Attenuation is considered unlikely since neutrinos have a very low rate of interaction with matter
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