Neutrinos from Supernovae as a Trigger for Gravitational Wave Search

Exploiting an improved analysis of the ${\overline{\nu }}_e$ signal from the explosion of a galactic core collapse supernova, we show that it is possible to identify within about 10 ms the time of the bounce, which is strongly correlated to the time of the maximum amplitude of the gravitational signal. This allows us to precisely identify the gravitational wave burst timing.

Figure 1

The ${\overline{\nu }}_e$ luminosity in our model, for the choice of parameters used to generate the events. The initial phase of increased luminosity, called “accretion phase” and connected to the explosion, is clearly visible.

Figure 2

Curve of events accumulation. The stripe is obtained varying the rise time ${\tau }_r$ in the interval given in the text.