Timing Analysis of Unusual GRB 090709A Observed by Suzaku Wide-band All sky Monitor
Abstract
A result of a joint timing analysis is presented for prompt emission of long-duration (T90 = 81 s) GRB 090709A with Swift Burst Alert Telescope (Swift/BAT), Suzaku Wide-band All-sky Monitor (Suzaku/WAM) and Konus-Wind over an energy range from 15 keV to 5 MeV. It was reported that multi-peaked GRB 090709A exhibited a possible periodic behavior with a period of about 8 s which is comparable to typical time scale of soft gamma-ray repeaters. However, the periodicity is still marginal in detailed analysis with Swift/BAT and GRB090709A exhibited a typical afterglow[1] [2]. To investigate significance of the periodicity more quantitatively, we performed a detailed timing analysis on all the lightcurves obtained with Suzaku/WAM, Swift/BAT, and Konus-Wind evaluating their underlying trend, red noise and white noise.
- Publication:
-
Deciphering the Ancient Universe with Gamma-ray Bursts
- Pub Date:
- October 2010
- DOI:
- 10.1063/1.3509358
- Bibcode:
- 2010AIPC.1279...89I
- Keywords:
-
- gamma-ray sources (astronomical);
- astronomical telescopes;
- sky surveys;
- afterglows;
- satellites;
- artificial;
- 98.70.Rz;
- 95.55.Ka;
- 95.80.+p;
- 82.33.Xj;
- 95.40.+s;
- gamma-ray sources;
- gamma-ray bursts;
- X- and gamma-ray telescopes and instrumentation;
- Astronomical catalogs atlases sky surveys databases retrieval systems archives etc.;
- Plasma reactions;
- Artificial Earth satellites