1. Are Long-Lag GRBs Different than Other Long GRBs?
- Author
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Hakkila, Jon, Giblin, Timothy W., Peters, Christopher D., Sonnett, Sarah M., and Nolan, Christopher M.
- Subjects
GAMMA ray bursts ,GAMMA rays ,SPECTRUM analysis ,METAPHYSICAL cosmology ,ASTRONOMY ,PHYSICS - Abstract
Long-lag GRBs have two different morphologies that can be delineated using the Internal Luminosity Function (ILF). Both burst types are typically dominated by a single broad pulse. Long-lag GRBs with large ILF indices are long FRED (Fast Rise Exponential Decay) bursts having well-defined peaks, while those with small ILF indices are long smooth bursts having no well-defined short timescale pulse structure. Long smooth bursts typically have have the longest lags of any type of GRB time history. We examine the hypothesis that long-lag GRBs are external shock signatures and contrast this with the hypothesis that they are merely broad internal shock pulses. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR]
- Published
- 2006
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