Cross-calibration of GRID via correlative spectral analysis of GRBs

被引：0

作者：

Zirui Yang ^{[1
]}

Chenyu Wang ^{[2
]}

Hanwen Lin ^{[3
]}

Xiaofan Pan ^{[2
]}

Qize Liu ^{[1
]}

Xutao Zheng ^{[2
]}

Huaizhong Gao ^{[2
]}

Longhao Li ^{[1
]}

Qidong Wang ^{[2
]}

Jianping Cheng ^{[1
]}

Zhi Zeng ^{[2
]}

Ming Zeng ^{[1
]}

Hua Feng ^{[2
]}

Binbin Zhang ^{[1
]}

Zhonghai Wang ^{[2
]}

Rong Zhou ^{[2
]}

Yuanyuan Liu ^{[4
]}

Lin Lin ^{[1
]}

Jiayong Zhong ^{[2
]}

Jianyong Jiang ^{[1
]}

Wentao Han ^{[2
]}

Yang Tian ^{[3
]}

Benda Xu ^{[5
]}

机构：

[1] Ministry of Education,Key Laboratory of Particle and Radiation Imaging (Tsinghua University)

[2] Tsinghua University,Department of Engineering Physics

[3] Tsinghua University,Department of Astronomy

[4] Beijing Normal University,Institute of High Energy Physics

[5] Chinese Academy of Sciences,School of Astronomy and Space Science

[6] Nanjing University,College of Physics

[7] Sichuan University,College of Nuclear Science and Technology

[8] Beijing Normal University,Department of Astronomy

[9] Beijing Normal University,Department of Computer Science and Technology

[10] Tsinghua University,undefined

来源：

Experimental Astronomy | 2025年 / 59卷 / 3期

关键词：

GRID; Gamma-ray burst; Nanosatellite constellation; Cross-calibration; Detector response matrix;

D O I：

10.1007/s10686-025-10002-2

中图分类号：

学科分类号：

摘要：

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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