X. H. Liang
A5050447526- Gamma-ray bursts and supernovae
- Particle Detector Development and Performance
- Astronomical Observations and Instrumentation
- Pulsars and Gravitational Waves Research
- Solar and Space Plasma Dynamics
- Astrophysics and Cosmic Phenomena
- Astrophysical Phenomena and Observations
- Ionosphere and magnetosphere dynamics
- Nuclear Physics and Applications
- Astro and Planetary Science
- Earthquake Detection and Analysis
- Radiation Detection and Scintillator Technologies
- Radioactivity and Radon Measurements
- X-ray Spectroscopy and Fluorescence Analysis
- Dark Matter and Cosmic Phenomena
- GaN-based semiconductor devices and materials
- Planetary Science and Exploration
- Astronomy and Astrophysical Research
- CCD and CMOS Imaging Sensors
- Advanced Measurement and Detection Methods
- Magnetic confinement fusion research
- Visual perception and processing mechanisms
- Advanced Semiconductor Detectors and Materials
- Silicon Carbide Semiconductor Technologies
- Spacecraft and Cryogenic Technologies
Institute of High Energy Physics
2010-2023
Chinese Academy of Sciences
2012-2023
Shenzhen Academy of Aerospace Technology
2018-2023
Fudan University
2020
Huashan Hospital
2020
North University of China
2018
University of Electronic Science and Technology of China
2015-2016
Harbin Institute of Technology
2011
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...
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...
ABSTRACT High time resolution and accuracy are of critical importance in the studies timing analysis delay localization gamma-ray bursts (GRBs), soft repeaters (SGRs) pulsars. The Gravitational wave high-energy Electromagnetic Counterpart All-sky Monitor (GECAM) consisting two micro-satellites, GECAM-A GECAM-B, launched on 2020 December 10, is aimed at monitoring locating X-ray GRBs all over sky. To achieve its scientific goals, GECAM designed to have highest (0.1 $\mu {\rm s}$) among GRB...
In this work, we report the in-orbit demonstration of X-ray pulsar navigation with Insight-Hard Modulation Telescope (Insight-HXMT), which was launched on Jun. 15th, 2017. The new method 'Significance Enhancement Pulse-profile Orbit-dynamics' (SEPO) is adopted to determine orbit observations only one pulsar. test, Crab chosen and observed by Insight-HXMT from Aug. 31th Sept. 5th in Using 5-day-long observation data, determined successfully three telescopes onboard - High Energy (HE), Medium...
Corona cooling was detected previously from stacking a series of short type-I bursts occurred during the low/had state atoll outburst. Type-I are hence regarded as sharp probe to our better understanding on basic property corona. The launch first Chinese X-ray satellite Insight-HXMT has large detection area at hard X-rays which provide almost unique chance move further in this research field. We report corona by single burst showing up {\bf flare} 4U 1636-536. This duration $\sim$13 seconds...
Abstract The Gravitational Wave High-energy Electromagnetic Counterpart All-sky Monitor (GECAM) is a pair of microsatellites (i.e., GECAM-A and GECAM-B) dedicated to monitoring gamma-ray transients including the high-energy electromagnetic counterparts gravitational waves, such as bursts, soft repeaters, solar flares, terrestrial flashes. Since launch in 2020 December, GECAM-B has detected hundreds astronomical events. For these localization key for burst identification classification well...
Abstract Gravitational‐wave high‐energy Electromagnetic Counterpart All‐sky Monitor (GECAM) is a space‐borne instrument dedicated to monitoring transients, including Terrestrial Gamma‐ray Flashes (TGFs) and Electron Beams (TEBs). We implemented TGF/TEB search algorithm for GECAM, with which 147 bright TGFs, 2 typical TEBs special TEB‐like events are identified during an effective observation time of ∼9 months. show that, gamma‐ray charged particle detectors, GECAM can effectively identify...
Abstract The dynamic nature of the brain is critical for success treatments aimed at restoring vision retinal level. these relies highly on functionality surviving neurons along entire visual pathway. Electrophysiological properties retina level have been investigated during progression degeneration; however, little known about changes in electrophysiological that occur primary cortex (V1) course degeneration. By conducting extracellular recording, we examined V1 S334ter-line-3 rats (a...
The long-term evolution of the centroid energy CRSF in Her X-1 is still a mystery. We report new measurement from campaign between Insight-HXMT and NuSTAR performed February 2018. Generally, two satellites show well consistent results timing spectral properties. joint analysis confirms that previously observed long decay phase has ended, line instead keeps constant around 37.5 keV after flux correction.
The weak compound fault feature is difficult to extract from a gearbox because the signal components are complex and inter-modulated. An approach (that abbreviated as MRPE-MOMEDA) for extracting features of transmission based on multipoint optimal minimum entropy deconvolution adjustment (MOMEDA) permutation was proposed solve this problem in present paper. complexity periodic impact low relatively small. Moreover, amplitude large. Based these advantages, reciprocal (MRPE) track source...
The high energetic particle package (HEPP) on-board the China Seismo-Electromagnetic Satellite (CSES) was launched on February 2, 2018. This includes three independent detectors: HEPP-H, HEPP-L, and HEPP-X. HEPP-H HEPP-L can detect electrons from 100 keV to approximately 50 MeV protons 2 200 MeV. HEPP-X measure solar X-rays in energy range 1 20 keV. objective of HEPP payload provide a survey particles with energy, pitch angle, time resolutions order gain new insight into space radiation...
A GaN alpha-particle detector of p-i-n structure was fabricated on a sapphire substrate in this article. The intrinsic layer the isoelectronic Al-doped with thickness 10 μm. leakage current remained below pA when reverse voltage increased from 0 to 40 V, which proved that it had better crystal quality than based undoped i-GaN layer, dark nA at -40 V. carrier concentration derived 1/ C <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> - V...
ABSTRACT As the main detector of Gravitational wave high-energy Electromagnetic Counterpart All-sky Monitor mission (GECAM), calibration energy response and detection efficiency gamma-ray (GRD) is content ground-based calibration. This article mainly focuses on in 8–160 keV with a refined measurement around absorption edges lanthanum bromide crystal ($\rm {LaBr_3}$). The GRD performances for different types, data acquisition modes, working incident positions are also analysed detail. We show...
Abstract Realtime trigger and localization of bursts are the key functions GECAM, an all-sky gamma-ray monitor launched on 2020 December 10. We developed a multifunctional software operating in CPU GECAM Electronic Box. This onboard has following features: high efficiency for real celestial with suppression false triggers caused by charged particle background fluctuation, dedicated algorithm optimized both short long bursts, low time latency information which is downlinked through Global...
Abstract Fast and reliable localization of high-energy transients is crucial for characterizing the burst properties guiding follow-up observations. Localization based on relative counts different detectors has been widely used all-sky gamma-ray monitors. There are two major methods this count distribution localization: χ 2 minimization method Bayesian method. Here we propose a modified that could take advantage both accuracy simplicity With comprehensive simulations, find our with Poisson...
Abstract One month after launching the Gravitational Wave High-energy Electromagnetic Counterpart All-sky Monitor, a bright thermonuclear X-ray burst from 4U 0614+09 was observed on 2021 January 24. We report time-resolved spectroscopy of and hint oscillation at 413 Hz with fractional amplitude ∼2.0% (rms). This coincides previously discovered Swift/Burst Alert Telescope (Strohmayer et al. 2008), therefore supports spin frequency this source. is one in normal bursts detected 0614+09, which...
Here we report the spectral-timing results of black hole X-ray binary 4U 1630-47 during its 2021 outburst using observations from Hard Modulation Telescope. Type-C quasi-periodic oscillations (QPOs) in 1.6--4.2 Hz and quasi-regular modulation (QRM) near 60 mHz are detected outburst. The QRM has a fractional rms 10%--16% 8--35 keV energy band with Q factor (frequency/width) 2--4. Benefiting broad hxmt, study dependence 1--100 for first time. We find that increases photon energy, while time...