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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 Wanderman and Piran 2010.

 

rate_and_sfr.jpg

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, arXiv:1006.4260v2) Cyan shaded area, right Y-axis scale.

 

The rate is fitted to the function: A*(1+z)^1.60.4 for z < 3.35 and B*(1+z)^-1.41.5 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

 

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