A5033022495- Gamma-ray bursts and supernovae
- Pulsars and Gravitational Waves Research
- Radiation Detection and Scintillator Technologies
- Nuclear Physics and Applications
- Particle Detector Development and Performance
- Astrophysical Phenomena and Observations
- Calibration and Measurement Techniques
- Dark Matter and Cosmic Phenomena
- Electron and X-Ray Spectroscopy Techniques
- Smart Grid Security and Resilience
- Solar and Space Plasma Dynamics
- Astronomical Observations and Instrumentation
- Astro and Planetary Science
- Astrophysics and Cosmic Phenomena
- Advancements in Photolithography Techniques
- Network Security and Intrusion Detection
- Solar Radiation and Photovoltaics
- Anomaly Detection Techniques and Applications
- Advanced X-ray and CT Imaging
- Medical Imaging Techniques and Applications
- Mathematics and Applications
- Geomagnetism and Paleomagnetism Studies
National Astronomical Observatories
2025
Chinese Academy of Sciences
2025
Institut de Recherche sur les Lois Fondamentales de l'Univers
2022-2024
CEA Paris-Saclay
2022-2024
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2022-2024
Université Paris Cité
2022-2024
Astrophysique, Instrumentation et Modélisation
2022-2024
Kunming University of Science and Technology
2023
Detection Limit (United States)
2022
Guangxi University
2018-2021
Abstract Through analysis, modelings, and simulations, we show that if the spectra of fast radio bursts (FRBs) are intrinsically quasi-periodic, likely produced by coherent curvature radiation from quasi-periodic structured bunches, then observed steep shallow spectra, narrow broadband multifrequency simultaneous as well possible statistical fringe in FRBs, could all be various manifestations them. If so, period properties inferred potential may provide valuable insights into mechanisms...
To probe this question, we perform a statistical analysis using the first Canadian Hydrogen Intensity Mapping Experiment Fast Radio Burst (CHIME/FRB) catalog and identify few discriminant properties between repeating non-repeating FRBs such as repetition rate, duration, bandwidth, spectral index, peak luminosity, potential frequency. If belong to one population, their distribution distinctions for rate duration can be explained by selection effect due beamed emission in Connor et al. (2020)....
Real-time system status detection must be accurate and reliable due to the close coupling of Cyber-Physical Systems (CPS) components. In order improve effectiveness CPS anomaly method, this paper proposes a real-time method based on least squares algorithm conditional entropy. To address issue overfitting insufficient generalization squares, penalty term is optimized by two different functions. Meanwhile, K-S test introduced in time window entropy model tackle problem setting threshold. The...
Early shallow-decaying X-ray afterglows of gamma-ray bursts (GRBs) may be attributed to the dipole radiations newly-born magnetars. Assuming that GRB jets powered by magnetars are quasi-universal, we find jet structure can parameterized as a uniform with luminosity $\log L_{\rm j}/{\rm erg\ s^{-1}}=52.68^{+0.76}_{-0.33}$ (1$\sigma$) and an opening angle $\theta_{\rm j}=2.10_{-1.28}^{+1.90}$ (50\% confidence level), surrounding power-law decay component index ${-4.00^{+0.27}_{-0.37}}$...
Context. The Space-based multi-band astronomical Variable Objects Monitor is a Chinese-French mission dedicated to the study of transient sky. It scheduled start operations in 2024. ECLAIRs coded-mask telescope with large field view. designed detect and localize gamma-ray bursts energy range from 4 keV up 120 keV. In 2021, underwent various calibration campaigns vacuum test-chambers evaluate its performance. Between 8 keV, counting response detection plane shows inhomogeneities between...
The Space-based multi-band astronomical Variable Objects Monitor (SVOM) is a Chinese-French mission dedicated to the study of transient sky. It scheduled start operations in 2024. ECLAIRs coded-mask telescope with large field view. designed detect and localize gamma-ray bursts (GRBs) energy range from 4 keV up 120 keV. In 2021, underwent various calibration campaigns vacuum test-chambers evaluate its performance. Between 8 keV, counting response detection plane shows inhomogeneities between...
Abstract In spite of the importance studying cosmic generation heavy elements
through r-process, detection kilonova resulted from a merger neutron star
binaries is still challenge task. this paper, we show that Visible Telescope (VT)
onboard on-going SVOM space mission powerful for identifying candi-
dates associated with short gamma-ray bursts (SGRBs) up to distance 600Mpc. A
significant color variation, turn blue and then red, revealed by calculating...
Let $\mathcal{A}$ be a hyperplane arrangement in complex projective space. It is an open question if the degree one cohomology jump loci (with coefficients) are determined by combinatorics of $\mathcal{A}$. By work Falk and Yuzvinsky \cite{FY}, all irreducible components passing through origin multinet structure, which combinatorially determined. Denham Suciu introduced pointed structure to obtain examples arrangements with translated positive-dimensional \cite{DS}. asked appear this manner...
In this paper, through analysis, modelings, and simulations, we show that if the spectra of fast radio bursts (FRBs) are intrinsically quasi-periodic spectra, likely produced by coherent curvature radiation from structured bunches, then observed steep shallow narrow broadband multi-frequency simultaneous as well possible statistical fringe in FRBs, could all be various manifestations these spectra. If so, period properties inferred potential may provide valuable insights into mechanisms...
Micro Pattern Gas Detector (MPGD) coupled to an optical imaging system is a good candidate for detecting polarization of X-ray, dark matter, neutron, etc. In this paper, MicroMegas detector designed the photoelectron track which working gas compose Ar+CF4 mixture and signal readout with ICCD. The correlation scintillation light intensity electrical current obtained in varying strength electric field at avalanche region, position resolution 385 μm. clear images 241Am alpha source 5.9 KeV...
Abstract This paper describes a low-power neutron and gamma-ray detector based on CLYC scintillator enriched with 96% 6 Li for environmental radiation monitoring. The is designed in compliance the IP66 standard having water dust release capability. power consumption of 3.5 W, operating temperature from -15° to +40°. energy response range gamma rays 40 keV 3 MeV, while resolution 4.8% (662 keV). A figure merit (FOM) used evaluate neutron-gamma discrimination, achieving value 3.42. mixed...