Wang-Chen Xue

Novel application of GECAM to monitor high-energy cosmic rays in low Earth orbit

Yangzhao Ren, F. R. Zhu, Shaolin Xiong, Chao Zheng et autres

Abstract High-energy cosmic-ray monitoring in low Earth orbit (LEO) is important for space science and exploration, yet it is usually limited to the dedicated cosmic-ray detectors. Here we show that GECAM, although designed as a gamma-ray all-sky monitor, can monitor high-energy cosmic …

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GRB 250706B/C: Insight-HXMT Discovery of a High-Luminosity Burst as a Candidate for Fallback-Regulated Accretion in the Prompt Emission

Chen-Wei Wang, R. Moradi, Shao-Lin Xiong, Shuang-Nan Zhang et autres

Fallback accretion in collapsar models is often associated with underluminous gamma-ray bursts (GRBs), leading to the widespread view that fallback-fed engines may be intrinsically inefficient at producing high-luminosity events. In this Letter, we present GRB 250706B/C, a luminous long GRB observed by …

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Comprehensive Measurement of Spectral Evolution in a Gamma-Ray Burst Flare: High-time-resolution Insights into the “Double-tracking” Phenomenon

Zheng-Hang Yu, Wen-Jun Tan, Chen-Wei Wang, Shao-Lin Xiong et autres

Abstract The spectral evolution characteristics of the prompt emission in gamma-ray bursts (GRBs) have been extensively studied, but detailed investigations of the spectral evolution in a GRB flare remain lacking. In this work, we present the first analysis of spectral parameter evolution …

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First in-flight observation with the novel coincidence readout SiPM-based detectors of DRO/GTM

Jia-Cong Liu, Peng Zhang, Jinpeng Zhang, Shao-Lin Xiong et autres

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Spectral Evidence of Heavy Nuclei from the Neutron Star Crust in Magnetar Bursts

Sheng-Lun Xie, Yun-Wei Yu, Shao-Lin Xiong, Wang-Chen Xue

The crust of a neutron star (NS) provides a unique laboratory for studying matter under extreme density and magnetic field conditions that cannot be realized in terrestrial experiments. However, direct observational constraints on its composition have remained very limited. Magnetar bursts provide …

GECAM detector performance at very high count rates

Jia-Cong Liu, Shao-Lin Xiong, Ya-Qing Liu, Ke Gong et autres

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GECAM discovery of a peculiar magnetar X-ray burst (MXB 221120) from SGR J1935+2154 associated with a fast radio burst

Wen-Jun Tan, Yue Wang, Chen-Wei Wang, Shao-Lin 少林 Xiong 熊 et autres

Fast radio bursts (FRBs) are enigmatic cosmic transients of millisecond duration observed in the radio band. The identification of FRB-associated magnetar X-ray bursts (MXBs) from galactic magnetar SGR J1935+2154 suggests that at least a fraction of FRBs can be produced from magnetar …

GECAM discovery of a peculiar magnetar X-ray burst (MXB 221120) from SGR J1935+2154 associated with a fast radio burst

Wen-Jun Tan, Yue Wang, Chen-Wei Wang, Shao-Lin Xiong et autres

Fast radio bursts (FRBs) are enigmatic cosmic transients of millisecond duration observed in the radio band. The identification of FRB-associated magnetar X-ray bursts (MXBs) from galactic magnetar SGR J1935+2154 suggests that at least a fraction of FRBs can be produced from magnetar …

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Comprehensive Measurement of Spectral Evolution in a GRB Flare: High Time-Resolution Insights into the "Double-Tracking" Phenomenon

Zheng-Hang Yu, Wen-Jun Tan, Chen-Wei Wang, Shao-Lin Xiong et autres

The spectral evolution characteristics of the prompt emission in gamma-ray bursts (GRBs) have been extensively studied, but detailed investigations of spectral evolution in a GRB flare remain lacking. In this work, we present the first analysis of spectral parameter evolution in a …

Systematic study of the simultaneous events detected by GECAM

Yang-Zhao Ren, F. R. Zhu, Shao-Lin Xiong, Yu Zhang et autres

Gravitational-wave high-energy Electromagnetic Counterpart All-sky Monitor (GECAM) is a constellation of all-sky monitors in hard X-ray and gamma-ray bands, primarily observing high-energy transients such as gamma-ray bursts, soft gamma-ray repeaters, solar flares, and terrestrial gamma-ray flashes. As GECAM has the highest temporal …

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GECAM discovery of a peculiar magnetar X-ray burst (MXB 221120) from SGR J1935+2154 associated with a fast radio burst

Wen-Jun Tan, Yue Wang, Chen-Wei Wang, Shao-Lin Xiong et autres

Fast radio bursts (FRBs) are enigmatic cosmic transients of millisecond duration observed in the radio band. The identification of FRB-associated magnetar X-ray bursts (MXBs) from the galactic magnetar SGR J1935+2154 suggests that at least a fraction of FRBs can be produced from …

cn, at (code pays fourni par la source)

Systematic study of the simultaneous events detected by GECAM

Yang-Zhao Ren, F. R. Zhu, Shao-Lin Xiong, Yan-Qiu Zhang et autres

Gravitational-wave high-energy Electromagnetic Counterpart All-sky Monitor (GECAM) is a constellation of all-sky monitors in hard X-ray and gamma-ray bands, primarily observing high-energy transients such as gamma-ray bursts, soft gamma-ray repeaters, solar flares, and terrestrial gamma-ray flashes. As GECAM has the highest temporal …

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