Cross-calibration of GRID via correlative spectral analysis of GRBs

IF 2.7 3区物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS

Experimental Astronomy Pub Date : 2025-05-06 DOI:10.1007/s10686-025-10002-2

Zirui Yang, Chenyu Wang, Hanwen Lin, Xiaofan Pan, Qize Liu, Xutao Zheng, Huaizhong Gao, Longhao Li, Qidong Wang, Jianping Cheng, Zhi Zeng, Ming Zeng, Hua Feng, Binbin Zhang, Zhonghai Wang, Rong Zhou, Yuanyuan Liu, Lin Lin, Jiayong Zhong, Jianyong Jiang, Wentao Han, Yang Tian, Benda Xu

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引用次数: 0

Abstract

Gamma-ray bursts (GRBs) are among the most energetic phenomena in the universe, and their observation has significantly advanced with the development of space-based gamma-ray telescopes. The Gamma-Ray Integrated Detectors (GRID) mission has initiated a nanosatellite constellation capable of all-sky GRB monitoring, deploying 12 detector payloads in low Earth orbit and collecting its first batch of scientific data. For GRB analysis, dedicated detector response matrices (DRMs) were individually constructed for each detector using Monte Carlo simulations and ground calibration. To further validate detector performance under real operational conditions, cross-calibration with existing space missions offers a robust validation. Herein, cross-calibration between the GRID detectors and the Fermi’s Gamma-ray Burst Monitor (GBM) was performed through joint spectral analysis. The excellent agreement between the instruments validates the accuracy of GRID’s DRMs and the reliability of its scientific data. For nanosatellite constellations like GRID, cross-calibration through orbital observations involving multiple distributed detector payloads is a crucial tool for ensuring uniformity and verifying overall performance of such systems.

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基于grb相关光谱分析的GRID交叉定标

伽玛射线暴（GRBs）是宇宙中能量最高的现象之一，随着天基伽玛射线望远镜的发展，对其的观测取得了显著进展。伽马射线集成探测器（GRID）任务启动了一个能够全天监测GRB的纳米卫星星座，在近地轨道部署了12个探测器有效载荷，并收集了第一批科学数据。在GRB分析中，利用蒙特卡罗模拟和地面标定分别构建了专用探测器响应矩阵（DRMs）。为了进一步验证探测器在实际操作条件下的性能，与现有空间任务的交叉校准提供了可靠的验证。为此，通过联合光谱分析，对GRID探测器和费米伽马射线暴监测器（GBM）进行了交叉校准。仪器之间的良好一致性验证了GRID drm的准确性和科学数据的可靠性。对于像GRID这样的纳米卫星星座，通过涉及多个分布式探测器有效载荷的轨道观测进行交叉校准是确保均匀性和验证此类系统整体性能的关键工具。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Experimental Astronomy 地学天文-天文与天体物理

CiteScore

5.30

自引率

3.30%

发文量

审稿时长

6-12 weeks

期刊介绍： Many new instruments for observing astronomical objects at a variety of wavelengths have been and are continually being developed. Furthermore, a vast amount of effort is being put into the development of new techniques for data analysis in order to cope with great streams of data collected by these instruments. Experimental Astronomy acts as a medium for the publication of papers of contemporary scientific interest on astrophysical instrumentation and methods necessary for the conduct of astronomy at all wavelength fields. Experimental Astronomy publishes full-length articles, research letters and reviews on developments in detection techniques, instruments, and data analysis and image processing techniques. Occasional special issues are published, giving an in-depth presentation of the instrumentation and/or analysis connected with specific projects, such as satellite experiments or ground-based telescopes, or of specialized techniques.