40 citations · 94 across the 23 of their papers we have counts for
25 papers
The (missing) gamma-ray counterparts to EP events
Maria Edvige Ravasio, Ansh Chopra, Peter G. Jonker +23
While the connection of Fast X-ray Transients (FXTs) detected by Einstein Probe (EP) with Gamma-ray Bursts (GRBs) is increasingly compelling, most lack gamma-ray counterparts, leav…
Tate cohomology of unipotent cuspidal representations of finite groups of Lie type
Sabyasachi Dhar
Let be a prime and be an algebraic closure of the finite field with elements. Let be a connected reductive algebraic group over , and let be a…
NICER detection of a new candidate cyclotron line in the bursting X-ray pulsar GRO J1744-28
Qi Liu, Lingda Kong, Long Ji +15
We report the detection of cyclotron resonant scattering features (CRSFs) in the spectrum of the unique bursting pulsar GRO J1744-28, observed during its recent outburst in 2021 wi…
Joint Observation of SGR J1935+2154 with \textit{Insight}-HXMT and KM40m during the active episode of October 2022
Wang-Chen Xue, Wen-Jun Tan, Yu-Xiang Huang +32
SGR J1935+2154 is the unique magnetar so far from which fast radio bursts have been detected. In October 2022, it resumed its burst activity, and we implemented a dedicated target-…
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 +50
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…
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 +41
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 f…
GECAM discovery of the second FRB-associated Magnetar X-ray Burst from SGR J1935+2154
Chen-Wei Wang, Shao-Lin Xiong, Yue Wang +47
Fast radio burst (FRB) is mysterious phenomenon with millisecond-duration radio pulses observed mostly from cosmological distance. The association between FRB 200428 and a magnetar…
Systematic Study of the Simultaneous Events Detected by GECAM
Yang-Zhao Ren, Feng-Rong Zhu, Shao-Lin Xiong +45
GECAM is a constellation of all-sky monitors in hard X-ray and gamma-ray band primarily aimed at high energy transients such as gamma-ray bursts, soft gamma-ray repeaters, solar fl…
Brightest GRB flare observed in GRB 221009A: bridge the last gap between flare and prompt emission in GRB
Zheng-Hang Yu, Chen-Wei Wang, Shao-Lin Xiong +46
Flares are usually observed during the afterglow phase of Gamma-Ray Bursts (GRBs) in soft X-ray, optical and radio bands, but rarely in gamma-ray band. Despite the extraordinary br…
LUNCH: A Lightweight Unified Deep-Learning Framework for General Transients Classification in High-Energy Time-Domain Astronomy
Peng Zhang, Chen-Wei Wang, Zheng-Hang Yu +19
The increasing data volume of high-energy space monitors necessitates real-time, automated transient classification for multi-messenger follow-up. Conventional methods rely on empi…
BREAKFAST: A Framework for general joint BA duty and follow-up guidance of multiple -ray monitors
Chen-Wei Wang, Peng Zhang, Shao-Lin Xiong +30
With the growing number of gamma-ray monitors in operation, several research teams have adopted a strategy of joint operation and scientific duty to improve efficiency. A successfu…
Unveil A Peculiar Light Curve Pattern of Magnetar Burst with GECAM observations of SGR J1935+2154
Yue Wang, Chen-Wei Wang, Shaolin Xiong +28
Magnetar X-ray Burst (MXB) is usually composed of a single pulse or multiple pulses with rapid rise and brief duration mostly observed in hard X-ray (soft gamma-ray) band. Previous…
Extending the short gamma-ray burst population from sub-threshold triggers in Fermi/GBM and GECAM data and its implications
Ce Cai, Shao-Lin Xiong, Yan-Qiu Zhang +21
Detection of short gamma-ray bursts (SGRBs) is critically important for the research of compact object mergers and multi-messenger astrophysics, but a significant part of SGRBs fal…
On the Ultra-Long Gamma-Ray Transient GRB 250702B/EP250702
Jin-Peng Zhang, Chen-Wei Wang, Zheng-Hang Yu +20
GRB 250702B/EP250702a is an interesting long-duration gamma-ray transient whose nature is in debate. To obtain a full picture in gamma-ray band, we implement a comprehensive target…
Multi-Instrument Search for Gamma-Ray Counterpart of X-ray Transients detected by EP/WXT
Yan-Qiu Zhang, Wang-Chen Xue, Jin-Peng Zhang +25
As a soft X-ray imager with unprecedentedly large field of view, EP/WXT has detected many (fast) X-ray transients, whose nature is very intriguing. Whether there is gamma-ray count…
GECAM Discovery of Peculiar Oscillating Particle Precipitation Events
Chenwei Wang, Shaolin Xiong, Yi Zhao +52
Charged particle precipitation typically manifests as a gradual increase and decrease of flux observed by space detectors. Cases with rapidly flux variation are very rare. Periodic…
Pitch Angle Measurement Method based on Detector Counts Distribution. -I. Basic conception
Chenwei Wang, Shaolin Xiong, Hongbo Xue +36
As an X-ray and gamma-ray all-sky monitor aiming for high energy astrophysical transients, Gravitational-wave high-energy Electromagnetic Counterpart All-sky Monitor (GECAM) has al…
Insight-HXMT observations of the extremely bright GRB 221009A
Wen-Long Zhang, Wang-Chen Xue, Cheng-Kui Li +22
The Hard X-ray Modulation Telescope (\insight) detected GRB 221009A, the brightest gamma-ray burst observed to date, with all its three telescopes, i.e. High Energy telescope (HE,…
The GECAM Ground Search System for Gamma-ray Transients
Ce Cai, Yan-Qiu Zhang, Shao-Lin Xiong +35
In the era of time-domain, multi-messenger astronomy, the detection of transient events on the high-energy electromagnetic sky has become more important than ever. The Gravitationa…
Hyper-active repeating fast radio bursts from rotation modulated starquakes on magnetars
Jia-Wei Luo, Jia-Rui Niu, Wei-Yang Wang +13
The non-detection of periodicity related to rotation challenges magnetar models for fast radio bursts (FRBs) with FRB emission from close to the magnetar surface. Moreover, a bimod…
Insights from the Gaussian Processes Method for the FRB-associated X-ray Burst of SGR 1935+2154
Ruijing Tang, Dahai Yan, Haiyun Zhang +7
Gaussian processes method is employed to analyze the light curves of bursts detected by Insight-HXMT, NICER, and GECAM from SGR 1935+2154 between 2020 to 2022. It is found that a s…
Observation of spectral lines in the exceptional GRB 221009A
Yan-Qiu Zhang, Shao-Lin Xiong, Ji-Rong Mao +21
As the brightest gamma-ray burst ever observed, GRB 221009A provided a precious opportunity to explore spectral line features. In this paper, we performed a comprehensive spectrosc…
Memory in the Burst Occurrence of Repeating FRBs
Ping Wang, Li-Ming Song, Shao-Lin Xiong +10
Understanding the nature of repeating fast radio bursts (FRBs) is crucial to probe their underlying physics. In this work, we analyze the waiting time statistics between bursts of…
Observation of GRB 221009A early afterglow in X/-ray energy band
Chao Zheng, Yan-Qiu Zhang, Shao-Lin Xiong +45
The early afterglow of a Gamma-ray burst (GRB) can provide critical information on the jet and progenitor of the GRB. The extreme brightness of GRB 221009A allows us to probe its e…