Timing Analysis of Unusual GRB 090709A Observed by Suzaku Wide-band All sky Monitor

Journal Article · Fri Oct 15 00:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3509358· OSTI ID:21439608

Iwakiri, W; Terada, Y; Tashiro, M S ^[1]; Ohno, M ^[2]; Kamae, T ^[3]; Nakagawa, Y E ^[4]; Yoshida, A; Yamaoka, K ^[5]; Makishima, K ^[6]

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1. Saitama University, 255 Shimo-Okubo, Sakura, Saitama, 338-8570 (Japan)
2. ISAS/JAXA, 3-1-1 Yoshinodai, Sagamihara, Kanagawa, 229-8510 (Japan)
3. Stanford Linear Accelerator Center, Menlo Park, CA 94025 (United States)
4. Institute of Physical and Chemical Research (RIKEN), 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan)
5. Aoyama Gakuin University, 5-10-1 Fuchinobe, Sagamihara, 229-8558 (Japan)
6. University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo, 113-0033 (Japan)

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.

• OSTI ID: 21439608
• Journal Information: AIP Conference Proceedings, Vol. 1279, Issue 1; Conference: Conference on deciphering the ancient universe with gamma-ray bursts, Kyoto (Japan), 19-23 Apr 2010; Other Information: DOI: 10.1063/1.3509358; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
AFTERGLOW
ASTROPHYSICS
COSMIC PHOTONS
GAMMA ASTRONOMY
GAMMA DETECTION
KEV RANGE
MEV RANGE
NOISE
PERIODICITY
PHOTON EMISSION
RADIATION MONITORS
SATELLITES
SKY
TELESCOPE COUNTERS
ASTRONOMY
BOSONS
COSMIC RADIATION
DETECTION
ELEMENTARY PARTICLES
EMISSION
ENERGY RANGE
IONIZING RADIATIONS
MASSLESS PARTICLES
MEASURING INSTRUMENTS
MONITORS
PHOTONS
PHYSICS
RADIATION DETECTION
RADIATIONS
VARIATIONS