Precursor activity in bright, long BATSE gamma-ray bursts
@article{Lazzati2005PrecursorAI, title={Precursor activity in bright, long BATSE gamma-ray bursts}, author={D. Lazzati}, journal={Monthly Notices of the Royal Astronomical Society}, year={2005}, volume={357}, pages={722-731} }
We study a sample of bright, long Burst and Transient Source Experiment (BATSE) gamma-ray burst (GRB) light curves in the 200 s before the detection of the GRB prompt emission. We find that in a sizable fraction of cases (∼20 per cent) there is evidence of emission above the background coming from the same direction as the GRB. This emission is characterized by a softer spectrum with respect to the main spectrum and contains a small fraction (0.1‐1 per cent) of the total event counts. The… CONTINUE READING
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