GECAM satellite system design and technological characteristic

Han, Xingbo; Zhang, Keke; Huang, Jia; Yu, Jongmin; Xiong, S. L.; Chen, YouMei; Li, Xinqiao; Qi, Ji; Wen, Xiang-Yang; Chen, Wen; Geng, Hao

doi:10.1360/sspma-2020-0120

Cited by 12 publications

(3 citation statements)

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“…Since launched in December 2020, GECAM has been operating in low earth orbit with 600 km altitude and 29° inclination angle (Han et al., 2020). GECAM consists of twin micro‐satellites (i.e., GECAM‐A and GECAM‐B) and each of them comprises 25 Gamma‐ray Detectors (GRDs) (An et al., 2022) and 8 Charged Particle Detectors (CPDs) (Y.…”

Section: Instrument and Search Algorithmmentioning

confidence: 99%

The First GECAM Observation Results on Terrestrial Gamma‐Ray Flashes and Terrestrial Electron Beams

Zhao

Liu

Xiong

et al. 2023

Geophysical Research Letters

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Section: Instrument and Search Algorithmmentioning

confidence: 99%

The First GECAM Observation Results on Terrestrial Gamma‐Ray Flashes and Terrestrial Electron Beams

Zhao

Liu

Xiong

et al. 2023

Geophysical Research Letters

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“…Since launched in December 2020, GECAM has been operating in low earth orbit with 600 km altitude and 29 • inclination angle (Han et al, 2020). GECAM consists of twin micro-satellites (i.e.…”

Section: Introductionmentioning

confidence: 99%

The First GECAM Observation Results on Terrestrial Gamma-ray Flashes and Terrestrial Electron Beams

Zhao

Liu

Xiong³

et al. 2022

Preprint

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Gravitational wave high-energy Electromagnetic Counterpart All-sky Monitor (GECAM) is a space-borne instrument dedicated to monitoring high-energy transients, thereinto Terrestrial Gamma-ray Flashes (TGFs) and Terrestrial Electron Beams (TEBs). We propose a TGF/TEB search algorithm, with which 147 bright TGFs and 4 TEBs are identified during an effective observation time of $\sim$ 9 months. We show that, with gamma-ray and charged particle detectors, GECAM can effectively identify and distinguish TGFs and TEBs, and measure their temporal and spectral properties in detail. Moreover, we find an interesting TEB consisting of two pulses with a separation of $\sim$ 150 ms, which is expected to originate from a lightning process near the geomagnetic footprint. We also find that the GECAM TGF’s lightning-association ratio is $\sim$ 80\% in the east Asia region using the GLD360 lightning network, which is significantly higher than previous observations.

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“…Gravitational wave high-energy Electromagnetic Counterpart All-sky Monitor (GECAM) is a small space science detection project specifically designed to detect gravitational wave high-energy electromagnetic counterpart (referred to as gravitational wave gamma-ray burst) for the purpose of making research on gravitational wave astronomy [1]. Gravitational wave high-energy electromagnetic counterpart refers Beijing Normal University, Beijing 110875, China to the celestial source of electromagnetic radiation homologous to a gravitational wave in time and space, that is, the light emitted by the gravitational wave source.…”

Section: Introductionmentioning

confidence: 99%

The design and performance of GRD onboard the GECAM satellite

Sun

Zhang

et al. 2021

Radiat Detect Technol Methods

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Background Each GECAM satellite payload contains 25 gamma-ray detectors (GRDs), which can detect gamma-rays and particles and can roughly localize the Gamma-Ray Bursts (GRBs). GRD was designed using lanthanum bromide (LaBr 3 ) crystal as the sensitive material with the rear end coupled with silicon photomultiplier (SiPM) array for readout. Purpose In aerospace engineering design of GRD, there are many key points to be studied. In this paper, we present the specific design scheme of GRD, the assembly and the performance test results of detectors. Methods Based on Monte Carlo simulation and experimental test results, the specific schematic design and assembling process of GRD were optimized. After being fully assembled, the GRDs were conducted performance tests by using radioactive source and also conducted random vibration tests. Result and conclusionThe test results show that all satellite-borne GRDs have energy resolution <16% at 59.5 keV, meeting requirements of satellite in scientific performance. The random vibration test shows that GRD can maintain in a stable performance, which meets the requirement of spatial application.

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GECAM satellite system design and technological characteristic

Cited by 12 publications

References 0 publications

The First GECAM Observation Results on Terrestrial Gamma‐Ray Flashes and Terrestrial Electron Beams

The First GECAM Observation Results on Terrestrial Gamma‐Ray Flashes and Terrestrial Electron Beams

The First GECAM Observation Results on Terrestrial Gamma-ray Flashes and Terrestrial Electron Beams

The design and performance of GRD onboard the GECAM satellite

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