Xiao‐Bo Li
A5100318770- Astrophysical Phenomena and Observations
- Gamma-ray bursts and supernovae
- Pulsars and Gravitational Waves Research
- Astrophysics and Cosmic Phenomena
- Particle Detector Development and Performance
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Solar and Space Plasma Dynamics
- Radioactive element chemistry and processing
- Stellar, planetary, and galactic studies
- High-pressure geophysics and materials
- Astronomical Observations and Instrumentation
- Adaptive optics and wavefront sensing
- Ionosphere and magnetosphere dynamics
- Nuclear Physics and Applications
- CCD and CMOS Imaging Sensors
- Calibration and Measurement Techniques
- Neutrino Physics Research
- Nuclear Materials and Properties
- Astro and Planetary Science
- Astronomy and Astrophysical Research
- Radiation Detection and Scintillator Technologies
- Geological and Geochemical Analysis
- Geophysics and Gravity Measurements
- Galaxies: Formation, Evolution, Phenomena
Chinese Academy of Sciences
2014-2025
Shenzhen Institutes of Advanced Technology
2025
Institute of High Energy Physics
2014-2024
Changchun Institute of Optics, Fine Mechanics and Physics
2021-2024
Changchun Observatory
2024
Institute of Applied Ecology
2024
Harbin Engineering University
2021-2024
Shanghai Institute of Optics and Fine Mechanics
2022
Shanghai Institute of Organic Chemistry
2021
Yunnan Observatories
2015-2021
Abstract The selective removal and immobilization of uranyl ions from aqueous solutions is essential for the sustainable development nuclear energy. Herein, a robust lanthanide‐organic framework material ( IHEP‐24 ) developed simultaneous fluorescence sensing, adsorption, photocatalytic reduction uranium, integrating three different functions in one material. confined space formed by coordination assembly viologen derivative ligands metal‐oxygen clusters can act as precise recognition sites...
GRB 221009A is the brightest gamma-ray burst ever detected since discovery of this kind energetic explosions. However, an accurate measurement prompt emission properties very challenging due to its exceptional brightness. With joint observations \textit{Insight}-HXMT and GECAM-C, we made unprecedentedly during first $\sim$1800 s 221009A, including precursor, main (ME, which dominates in flux), flaring early afterglow, hard X-ray soft band from $\sim$ 10 keV 6 MeV. Based on GECAM-C...
Abstract The early afterglow of a gamma-ray burst (GRB) can provide critical information on the jet and progenitor GRB. extreme brightness GRB 221009A allows us to probe its in unprecedented detail. In this Letter, we report comprehensive observation results (from T 0 +660 s +1860 s, where is Insight-HXMT/HE trigger time) X-ray/gamma-ray energy band 20 keV MeV) by Insight-HXMT High Energy X-ray Telescope, GECAM-C, Fermi/Gamma-ray Burst Monitor. We find that spectrum keV–20 MeV be well...
Abstract The milestone discovery of GW170817-GRB 170817A-AT 2017gfo has shown that gravitational waves (GWs) could be produced during the merger a neutron star–neutron star/black hole and in electromagnetic (EM) waves, gamma-ray burst (GRB) kilonova (KN) are generated sequence after merger. Observationally, however, EM properties before phase still unclear. Here we report peculiar precursor KN-associated long-duration GRB 211211A, providing evidence This lasts ∼0.2 s, waiting time between...
Abstract We report an analysis of Insight-HXMT observations the newly discovered accreting millisecond pulsar SRGA J144459.2–604207. During outburst, detected in 2024 February by SRG/ART-XC, broadband persistent spectrum was well fitted absorbed Comptonization model. 60 type I X-ray bursts medium energy (ME) data, and 37 were also with low-energy (LE) telescope. By superimposing Insight-HXMT/LE/ME/HE light curves similar profiles intensities, we measured a deficit X-rays 40–70 keV band....
Based on comprehensive analysis of core, well logging, seismic and production data, the multi-scale reservoir space, types, spatial shape distribution fractures caves, configuration relationship with wells in fracture-cavity carbonate reservoirs were studied systematically, influence them residual oil was analyzed, main controlling factors mode after water flooding established. Enhanced recovery methods considering development practice Tahe oilfield. Research shows that can be classified...
The origin(s) and mechanism(s) of fast radio bursts (FRBs), which are short pulses from cosmological distances, have remained a major puzzle since their discovery. We report strong Quasi-Periodic Oscillation(QPO) 40 Hz in the X-ray burst magnetar SGR J1935+2154 associated with FRB 200428, significantly detected Hard Modulation Telescope (Insight-HXMT) also hinted by Konus-Wind data. QPOs only been rarely detected; our 3.4 sigma (p-value is 2.9e-4) detection QPO reported here reveals...
We construct an X-ray spectral model for the clumpy torus in active galactic nucleus (AGN) using Geant4, which includes physical processes of photoelectric effect, Compton scattering, Rayleigh $γ$ conversion, fluorescence line, and Auger process. Since electrons are expected to be bounded instead free, deviation scattering cross section from Klein-Nishina has also been included, changes spectra by up 25% below $10$ keV. have investigated effect clumpiness parameters on reflection strength...
Abstract The giant flares of soft gamma-ray repeaters (SGRs) have long been proposed to contribute at least a subsample the observed short bursts (GRBs). In this paper, we perform comprehensive analysis high-energy data recent bright GRB 200415A, which was located close Sculptor galaxy. Our results suggest that magnetar flare provides most natural explanation for observational properties including its location, temporal and spectral features, energy, statistical correlations, emissions. On...
Magnetars are neutron stars with extreme magnetic field and sometimes manifest as soft gamma-ray repeaters (SGRs). SGR J1935+2154 is one of the most prolific bursters first confirmed source fast radio burst (i.e. FRB 200428). Encouraged by discovery X-ray counterpart FRB, Insight-Hard Modulation Telescope (Insight-HXMT) implemented a dedicated 33-day long ToO observation since April 28, 2020. With HE, ME, LE telescopes, Insight-HXMT provides thorough monitoring activity evolution J1935+2154,...
Abstract We study X-ray and soft gamma-ray spectra from the hard state of accreting black hole binary MAXI J1820+070. perform an analysis joint HXMT, NuSTAR, INTEGRAL. find overall agreement between all three satellites. Satisfactory fits to data require substantial spectral complexity, with our models including two Comptonization regions their associated disk reflection, a blackbody, narrow Fe K α line. Our confirm presence truncation reflecting optically thick at least >10 gravitational...
Abstract The minimum variation timescale (MVT) of soft gamma-ray repeaters can be an important probe to estimate the emission region in pulsar-like models, as well Lorentz factor and radius possible relativistic jet burst (GRB)–like thus revealing their progenitors physical mechanisms. In this work, we systematically study MVTs hundreds X-ray bursts (XRBs) from SGR J1935+2154 observed by Insight-HXMT, GECAM, Fermi/Gamma-ray Burst Monitor 2014 July 2022 January through Bayesian block...
Abstract To investigate gamma-ray bursts (GRBs) in depth, it is crucial to develop an effective method for identifying GRBs accurately. Current criteria, e.g., onboard blind search, ground and target are limited by manually set thresholds perhaps miss GRBs, especially subthreshold events. We proposed a novel approach that utilizes convolutional neural networks (CNNs) distinguish non-GRBs directly. structured three CNN models, plain -CNN, ResNet, ResNet-CBAM, endeavored exercise fusing...