Progress of GECAM Observation Research

WANG Chenwei; ZHANG Yanqiu; XIONG Shaolin; LIU Jiacong; TAN Wenjun; XIAO Shuo; XIE Shenglun; XUE Wangchen; ZHAO Haisheng; ZHAO Yi; ZHENG Chao

doi:10.11728/cjss2024.04.2024-yg13

Progress of GECAM Observation Research

doi: 10.11728/cjss2024.04.2024-yg13 cstr: 32142.14.cjss2024.04.2024-yg13

WANG Chenwei^{1, 2
,},
ZHANG Yanqiu^{1, 2
,},
XIONG Shaolin^{1, 2
,},
LIU Jiacong^{1, 2},
TAN Wenjun^{1, 2},
XIAO Shuo³,
XIE Shenglun^{1, 4},
XUE Wangchen^{1, 2},
ZHAO Haisheng¹,
ZHAO Yi⁵,
ZHENG Chao^{1, 2}

1.
Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049
2.
University of Chinese Academy of Sciences, Beijing 100049
3.
Guizhou Normal University, Guizhou 550025
4.
Central China Normal University, Wuhan 430079
5.
Dezhou University, Dezhou 253023

More Information

Author Bio:
Male. Born in July 1999 in Shijiazhuang, Hebei Province, China. Currently enrolled as a Ph.D. student at the Institute of High Energy Physics, Chinese Academy of Sciences, majoring in High Energy Astrophysics (Particle Physics and Nuclear Physics), supervised by Prof. XIONG Shaolin. Research interests include the design and development of X/γ-ray astrophysical instru- ments, the observation and analysis of high- energy astrophysical transients, as well as high-energy atmospheric phenomena. E-mail: cwwang@ihep.ac.cn

Female. Born in January 1999 in Zhumadian, Henan Province, China. Currently enrolled as a Ph.D. student at the Institute of High Energy Physics, Chinese Academy of Sciences, majoring in High Energy Astrophysics (Particle Physics and Nuclear Physics), supervised by Prof. XIONG Shaolin. The main research work is cross-calibration of GECAM satellites and data analysis of peculiar GRBs, including GRB 221009A and GRB 211211A. Research interests include instrumentation, data analysis and theory interpretation of high-energy transients (e.g. GRB, GW, SGR). E-mail: zhangyanqiu@ihep.ac.cn

Male, born in Feb. 1983 in Fengcheng city of Jiangxi Province, China. Currently working in the Institute of High Energy Physics, Chinese Academy of Sciences as researcher (professor). Proposed the GECAM mission as the Principal Investigator. Participated in other high-energy space telescopes including Insight-HXMT, POLAR, SVOM, POLAR2, etc. Research interests include high energy astrophysics (e.g. GRB, GW, SGR, FRB) and high energy phenomena from the Sun to the Earth (e.g. SFL, TGF, TEB), in terms of instrumentation, observation, data analysis and theory interpretation.E-mail: xiongsl@ihep.ac.cn

摘要

Abstract: Gravitational wave high-energy Electromagnetic Counterpart All-sky Monitor (GECAM) is a constellation with four instruments (launch date): GECAM-A/B (10 December 2020), GECAM-C (27 July 2022) and GECAM-D (13 March 2024), which are dedicated to monitoring gamma-ray transients in all-sky. The primary science objectives of GECAM include Gamma-Ray Bursts (GRBs), Soft Gamma-ray Repeaters (SGRs), high energy counterparts of Gravitation Wave (GW) and Fast Radio Burst (FRB), Solar Flares (SFLs), as well as Terrestrial Gamma-ray Flashes (TGFs) and Terrestrial Electron Beams (TEBs). A series of observations and research have been made since the launch of GECAM-A/B. GECAM observations provide new insights into these high-energy transients, demonstrating the unique role of GECAM in the “multi-wavelength, multi-messenger” era.
- GECAM /
- Gravitational wave electromagnetic counterpart /
- High energy transients
注释:

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Figure 1. (a) Light curves of GRB 221009A^[2]. (b) Spectra of the early after glow of GRB 221009A^[3]

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Figure 2. Light curves and the evolution of the Blackbody Temperature (KT) with time of two bursts from SGR J1935+2154^[9]: trigger time of burst is 2021-09-12T00:34:37.414 for panel (a) and 2022-01-15T17:21:59.297 for panel (b)

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Figure 3. Geographical distribution of GECAM TGFs, including 147 TGFs (red pluses), 2 TEBs (green circles) and 2 TEB-like events (blue triangles). The green dashed lines show the east Asia region while the orange dashed lines represent the South Atlantic Anomaly (SAA)^[14]

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参考文献(14)

[1]	ABBOTT B P, ABBOTT R, ABBOTT T D, et al. Gravitational waves and gamma-rays from a binary neutron star merger: GW170817 and GRB 170817A[J]. The Astrophysical Journal Letters, 2017, 848(2): L13 doi: 10.3847/2041-8213/aa920c
[2]	AN Z H, ANTIER S, BI X Z, et al. Insight-HXMT and GECAM-C observations of the brightest-of-all-time GRB 221009A[OL]. arXiv preprint arXiv: 2303.01203, 2023. DOI:10.48550/arXiv.2303.01203
[3]	ZHENG C, ZHANG Y Q, XIONG S L, et al. Observation of GRB 221009A early afterglow in X-Ray/gamma-ray energy bands[J]. The Astrophysical Journal Letters, 2024, 962(1): L2 doi: 10.3847/2041-8213/ad2073
[4]	ZHANG Y Q, XIONG S L, MAO J R, et al. Observation of spectral lines in the exceptional GRB 221009A[J]. Science China Physics, Mechanics & Astronomy, 2024, 67 (8): 289511
[5]	YANG J, ZHAO X H, YAN Z Y, et al. Synchrotron radiation dominates the extremely bright GRB 221009A[J]. The Astrophysical Journal Letters, 2023, 947(1): L11 doi: 10.3847/2041-8213/acc84b
[6]	SUN H, WANG C W, YANG J, et al. Magnetar emergence in a peculiar gamma-ray burst from a compact star merger[OL]. arXiv preprint arXiv: 2307.05689, 2023. DOI: 10.48550/arXiv.2307.05689
[7]	YI S X, WANG C W, SHAO X Y, et al. Evidence of mini-jet emission in a large emission zone from a magnetically-dominated gamma-ray burst jet[OL]. arXiv preprint arXiv: 2310.07205, 2023. DOI: 10.48550/arXiv.2310.07205
[8]	XIE S L, CAI C, XIONG S L, et al. Revisit the periodicity of SGR J1935+2154 bursts with updated sample[J]. Monthly Noti ces of the Royal Astronomical Society, 2022, 517(3): 3854-3863 doi: 10.1093/mnras/stac2918
[9]	XIAO S, TUO Y L, ZHANG S N, et al. Discovery of the linear energy dependence of the spectral lag of X-ray bursts from SGR J1935+2154[J]. Monthly Notices of the Royal Astronomical Society, 2023, 521(4): 5308-5333 doi: 10.1093/mnras/stad885
[10]	XIAO S, YANG J J, LUO X H, et al. The minimum variation timescales of X-ray bursts from SGR J1935+2154[J]. The Astrophysical Journal Supplement Series, 2023, 268(1): 5 doi: 10.3847/1538-4365/ace77c
[11]	XIAO S, LI X B, XUE W C, et al. Individual and averaged power density spectra of X-ray bursts from SGR J1935+2154: quasi-periodic oscillation search and slopes[J]. Monthly Notices of the Royal Astronomical Society, 2024, 527(4): 11915-11924
[12]	XIAO S, ZHANG S N, XIONG S L, et al. The self-organized criticality behaviours of two new parameters in SGR J1935+2154[J]. Monthly Notices of the Royal Astronomical Society, 2024, 528(2): 1388-1392 doi: 10.1093/mnras/stae142
[13]	ZHAO H S, LI D, XIONG S L, et al. Paired quasi-periodic pulsations of hard X-ray emission in a solar flare[J]. Science China Physics, Mechanics & Astronomy, 2023, 66 (5): 259611
[14]	ZHAO Y, LIU J C, XIONG S L, et al. The first GECAM observation results on terrestrial gamma-ray flashes and terrestrial electron beams[J]. Geophysical Research Letters, 2023, 50(14): e2022GL102325 doi: 10.1029/2022GL102325