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| Paper: |
GRB 090618: Distinct Pulse Temporal and Spectral Characteristics
within a Burst |
| Volume: |
446, Galaxy Evolution: Infrared to Millimeter Wavelength Perspective |
| Page: |
149 |
| Authors: |
Zhang, F.-W. |
| Abstract: |
GRB 090618 is an interesting burst observed simultaneously by the
Swift-BAT and Fermi-GBM instruments as well as other detectors. Its
light curve shows two emission episodes with four prominent pulses. It is
obvious that the pulse in the first episode has a smoother
morphology than the three pulses in the second episode. Using the
pulse peak-fit method, we have performed a detailed analysis of the
pulse temporal and spectral characteristics within this burst. We find that the
pulses in the different emission episodes exhibit different properties.
The mechanism which causes the different pulse characteristics within a burst
is unclear. |
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