用Swift-BAT和GLAST-GBM进行伽马射线暴的相关谱分析
Correlative Spectral Analysis of Gamma-Ray Bursts using Swift-BAT and GLAST-GBM
摘要：
我们讨论了光谱分析模拟的初步结果，包括预期的相关多波长观测的伽马射线暴（GRB）使用斯威夫特的爆发警报望远镜（BAT）和伽玛射线大面积空间望远镜（GLAST）的爆发监视器（GLAST-GBM），导致联合光谱拟合，包括特征光子能量（Epeak）值，保守估计每年约30 GRB。BAT光谱响应的增加将（一）补充GBM探测器响应矩阵的在轨校准工作，（二）通过增加~20-100 keV的有效面积来提高GLAST的低能灵敏度，（三）通过提高GBM的源定位精度来促进GLAST伽马射线暴的地面后续工作，以及（iv）帮助识别通过离线GBM数据分析发现的非触发GRB的子集。Swift-BAT伽玛暴与其他高能探测器（如Konus-WIND和Suzaku-WAM）成功的联合光谱拟合证明了这种多波长相关分析，这将使人们能够研究30个能量年代内瞬发伽玛暴发射的宽带光谱和时间演化，因此，在不增加对任务资源的额外需求的情况下，未来十年
英文摘要：
We discuss the preliminary results of spectral analysis simulations involving anticipated correlated multi-wavelength observations of gamma-ray bursts (GRBs) using Swift's Burst Alert Telescope (BAT) and the Gamma-Ray Large Area Space Telescope's (GLAST) Burst Monitor (GLAST-GBM), resulting in joint spectral fits, including characteristic photon energy (Epeak) values, for a conservative annual estimate of ~30 GRBs. The addition of BAT's spectral response will (i) complement in-orbit calibration efforts of GBM's detector response matrices, (ii) augment GLAST's low energy sensitivity by increasing the ~20-100 keV effective area, (iii) facilitate ground-based follow-up efforts of GLAST GRBs by increasing GBM's source localization precision, and (iv) help identify a subset of non-triggered GRBs discovered via off-line GBM data analysis. Such multi-wavelength correlative analyses, which have been demonstrated by successful joint-spectral fits of Swift-BAT GRBs with other higher energy detectors such as Konus-WIND and Suzaku-WAM, would enable the study of broad-band spectral and temporal evolution of prompt GRB emission over three energy decades, thus potentially increasing the science return without placing additional demands upon mission resources throughout their contemporaneous orbital tenure over the next decade.
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