Prospects for the detection of GRBs with HAWC

Fermi LAT has shown that GRBs produce photons in the range 10–94 GeV (126 GeV redshift corrected for GRB 130427A). Limited detector size constrains the sensitivity of space borne instruments at the highest energies. Ground based instruments can extend observations from 30 GeV to 300 GeV. Higher energy observations of GRBs would enable better modeling of the GRBs themselves, it would allow us to probe the extragalactic background light and would constrain Lorentz invariance violation. We show here that the air shower array HAWC, currently under construction, will be mostly sensitive to the prompt phase of short GRBs and that it can have a rate for detecting GRBs as high as 1.65 GRBs/year.