For ( E_\textiso=10^53 ) erg, ( n_0=1 ), ( \theta_j=0.05 ) rad, find ( t_j ) in days.
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A GRB varies on ( \delta t = 0.01) s. Estimate minimum ( \Gamma ) if emission radius ( R > 10^14 ) cm. For ( E_\textiso=10^53 ) erg, ( n_0=1 ), ( \theta_j=0
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