Accretion disk precession in GRBs

M. M. REYNOSO; ROMERO, GUSTAVO E; SAMPAYO, O. A.

Congreso; Reunion Anual de la Asociacion Argentina de Astronomia; 2004

We present an analysis of the precession of neutrino- cooled accretion disks in gamma ray bursts central engines. We deal with disks with accretion rates up to 1 solar mass per second. We analyze the parameter space for which the system develops rigid precession and show that if the relativistic jet is bounded to the disk, a variety of morphologies appear in the resulting light curves, with peculiar features of fine structure similar to those observed.