Long duration GRB Rate Page
Rate | Luminosity Function
Here I present an updated estimate of long GRB event rate, using the direct inversion method described in .
The above figure show the rate (in events per year per Gpc^3) as a function of the redshift (z) – Gray shaded area, left Y-axis scale.
For comparison we plot the star formation rate (Bouwens, R.J., et al., 2010, ) – Cyan shaded area, right Y-axis scale.
The rate is fitted to the function: A*(1+z)^1.6±0.4 for z < 3.35 and B*(1+z)^-1.4±1.5 for z > 3.35
Number of bursts in this sample: 124
The local GRB rate: 1.8 [yr^-1 Gpc^-3]
Last Update 14-jul-2010