Lang Cui
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View article: Lunar Orbital VLBI Experiment: motivation, scientific purposes and status
Lunar Orbital VLBI Experiment: motivation, scientific purposes and status Open
The Lunar Orbital VLBI Experiment (LOVEX) is a scientific component of the Chinese Lunar Exploration Project (CLEP) Chang'E-7. The spaceborne component of LOVEX is implemented onboard the relay satellite QueQiao-2, which was launched on 20…
View article: Observatory Science with eXTP
Observatory Science with eXTP Open
Scheduled for launch in 2030, the enhanced X-ray Timing and Polarization (eXTP) telescope is a Chinese space-based mission aimed at studying extreme conditions and phenomena in astrophysics. eXTP will feature three main payloads: Spectrosc…
View article: Second-law thermodynamic assessment of cascaded latent-heat stores for pumped-thermal electricity storage
Second-law thermodynamic assessment of cascaded latent-heat stores for pumped-thermal electricity storage Open
Joule-Brayton cycle-based pumped-thermal electricity storage can develop from a pure electricity-storage function to integrated cooling, heating and power systems. Cascaded latent-heat stores are promising as thermal stores that offer flex…
View article: Tracking the jet-like corona of black hole Swift J1727.8-1613 during a flare state through Type-C quasi-periodic oscillations
Tracking the jet-like corona of black hole Swift J1727.8-1613 during a flare state through Type-C quasi-periodic oscillations Open
Type-C quasi-periodic oscillations (QPOs) in black hole X-ray transients typically manifest in the low-hard and hard-intermediate states. This study presents a detailed spectral and temporal analysis of the black hole candidate Swift J1727…
View article: Pathfinding pulsar observations with the CVN incorporating the FAST
Pathfinding pulsar observations with the CVN incorporating the FAST Open
The importance of Very Long Baseline Interferometry (VLBI) for pulsar research is becoming increasingly prominent and receiving more and more attention. In this paper, we present pathfinding pulsar observation results with the Chinese VLBI…
View article: Very Long Baseline Array Observations of Parsec-scale Radio Emission in Dual Active Galactic Nuclei
Very Long Baseline Array Observations of Parsec-scale Radio Emission in Dual Active Galactic Nuclei Open
It is believed that dual active galactic nuclei (dual AGN) will form during galaxies merge. Studying dual-AGN emission can provide valuable insights into galaxy merging and evolution. To investigate parsec-scale radio emission properties, …
View article: Constraining annihilating dark matter using the multi-frequency radio flux profiles of the M33 galaxy
Constraining annihilating dark matter using the multi-frequency radio flux profiles of the M33 galaxy Open
Radio data can give stringent constraints for annihilating dark matter. In general, radio observations can detect very accurate radio flux density with high resolution and different frequencies for nearby galaxies. We are able to obtain th…
View article: Multi-band Cross-correlated Radio Variability of the Blazar 3C 279
Multi-band Cross-correlated Radio Variability of the Blazar 3C 279 Open
We present the results of our study of cross-correlations between long-term multi-band observations of the radio variability of the blazar 3C 279. More than a decade (2008-2022) of radio data were collected at seven different frequencies r…
View article: The Qitai Radio Telescope
The Qitai Radio Telescope Open
This study presents a general outline of the Qitai radio telescope (QTT) project. Qitai, the site of the telescope, is a county of Xinjiang Uygur Autonomous Region of China, located in the east Tianshan Mountains at an elevation of about 1…
View article: The relation of formation mechanism, microstructural evolution and mechanical properties of Ni-based coatings produced via high pressure cold spray deposition
The relation of formation mechanism, microstructural evolution and mechanical properties of Ni-based coatings produced via high pressure cold spray deposition Open
The two kinds of NiCr and NiCo superalloy coatings are deposited by high pressure cold sprayed (CS) technique, in this work. The emphasis is placed at the relation of formation mechanism, microstructural evolution and mechanical properties…
View article: Precessing jet nozzle connecting to a spinning black hole in M87
Precessing jet nozzle connecting to a spinning black hole in M87 Open
Powerful relativistic jets in active galactic nuclei (AGN) are believed to be originated from the accretion of material onto the supermassive black hole (SMBH) 1 . The nearby radio galaxy M87 is one of the best examples of this phenomenon,…
View article: Spectral analysis of a parsec-scale jet in M87: Observational constraint on the magnetic field strengths in the jet
Spectral analysis of a parsec-scale jet in M87: Observational constraint on the magnetic field strengths in the jet Open
Because of its proximity and the large size of its black hole, M87 is one of the best targets for studying the launching mechanism of active galactic nucleus jets. Currently, magnetic fields are considered to be an essential factor in the …
View article: Intermediate-mass black holes: finding of episodic, large-scale and powerful jet activity in a dwarf galaxy
Intermediate-mass black holes: finding of episodic, large-scale and powerful jet activity in a dwarf galaxy Open
Dwarf galaxies are characterised by a very low luminosity and low mass. Because of significant accretion and ejection activity of massive black holes, some dwarf galaxies also host low-luminosity active galactic nuclei (AGNs). In a few dwa…
View article: VLBI astrometry on the white dwarf pulsar AR Scorpii
VLBI astrometry on the white dwarf pulsar AR Scorpii Open
AR Scorpii (AR Sco), the only-known radio-pulsing white dwarf binary, shows unusual pulsating emission at the radio, infrared, optical and ultraviolet bands. To determine its astrometric parameters at the radio band independently, we condu…
View article: Optical flux and spectral variability of BL Lacertae during its historical high outburst in 2020
Optical flux and spectral variability of BL Lacertae during its historical high outburst in 2020 Open
BL Lacertae had undergone a series of historical high flux activity over a year, from August 2020 in the optical to VHE $γ$-rays. In this paper, we report on optical flux and spectral variability of the first historical maxima outburst eve…
View article: EAVN Astrometry toward the Extreme Outer Galaxy: Kinematic distance with the proper motion of G034.84-00.95
EAVN Astrometry toward the Extreme Outer Galaxy: Kinematic distance with the proper motion of G034.84-00.95 Open
We aim to reveal the structure and kinematics of the Outer-Scutum-Centaurus (OSC) arm located on the far side of the Milky Way through very long baseline interferometry (VLBI) astrometry using KaVA, which is composed of KVN (Korean VLBI Ne…
View article: Recent Advances in the Equal Channel Angular Pressing of Metallic Materials
Recent Advances in the Equal Channel Angular Pressing of Metallic Materials Open
Applications of a metallic material highly depend on its mechanical properties, which greatly depend on the material’s grain sizes. Reducing grain sizes by severe plastic deformation is one of the efficient approaches to enhance the mechan…
View article: Multimessenger Picture of J1048+7143
Multimessenger Picture of J1048+7143 Open
We draw the multimessenger picture of J1048+7143, a flat-spectrum radio quasar known to show quasi-periodic oscillations in the $\gamma$-ray regime. We generate the adaptively-binned Fermi Large Area Telescope light curve of this source ab…
View article: A long-lived compact jet in the black hole X-ray binary candidate AT2019wey
A long-lived compact jet in the black hole X-ray binary candidate AT2019wey Open
AT2019wey is a transient discovered by the Asteroid Terrestrial-impact Last Alert System survey in December of 2019. Follow-up optical, radio, and X-ray observations led to classification of this source as a Galactic black hole X-ray binar…
View article: A GHz Peaked Spectrum radio galaxy born at one-tenth the current age of the Universe
A GHz Peaked Spectrum radio galaxy born at one-tenth the current age of the Universe Open
Studies of high redshift radio galaxies can shed light on the activity of active galactic nuclei (AGN) in massive elliptical galaxies, and on the assembly and evolution of galaxy clusters in the Universe. The vast majority of observed high…
View article: The effect of plasma shape and neutral beam mix on the rotation threshold for RMP-ELM suppression
The effect of plasma shape and neutral beam mix on the rotation threshold for RMP-ELM suppression Open
Varying the neutral beam injection (NBI) mix reveals a clear pedestal-top rotation threshold for edge localized mode (ELM) suppression by resonant magnetic perturbations. Guided by expectations for the RMP penetration mechanism, the rotati…
View article: Edge localized mode suppression and plasma response using mixed toroidal harmonic resonant magnetic perturbations in DIII-D
Edge localized mode suppression and plasma response using mixed toroidal harmonic resonant magnetic perturbations in DIII-D Open
Edge localized mode (ELM) suppression has been achieved in the DIII-D tokamak using mixed toroidal n = 2 and 3 harmonic resonant magnetic perturbations (RMPs). Here n is the toroidal mode number. It is determined that mixed toroidal harmon…
View article: Magnetic polarization measurements of the multi-modal plasma response to 3D fields in the EAST tokamak
Magnetic polarization measurements of the multi-modal plasma response to 3D fields in the EAST tokamak Open
A multi-modal plasma response to applied non-axisymmetric fields has been found in EAST tokamak plasmas. Here, multi-modal means the radial and poloidal structure of an individually driven toroidal harmonic is not fixed. The signature of s…
View article: Dynamic divertor control using resonant mixed toroidal harmonic magnetic fields during ELM suppression in DIII-D
Dynamic divertor control using resonant mixed toroidal harmonic magnetic fields during ELM suppression in DIII-D Open
Experiments using Resonant Magnetic Perturbations (RMPs), with a rotating n = 2 toroidal harmonic combined with a stationary n = 3 toroidal harmonic, have validated predictions that divertor heat and particle flux can be dynamically contro…
View article: Orchestrating TRANSP Simulations for Interpretative and Predictive Tokamak Modeling with OMFIT
Orchestrating TRANSP Simulations for Interpretative and Predictive Tokamak Modeling with OMFIT Open
TRANSP simulations are being used in the OMFIT work- flow manager to enable a machine independent means of experimental analysis, postdictive validation, and predictive time dependent simulations on the DIII-D, NSTX, JET and C-MOD tokamaks…
View article: Joint DIII-D/EAST research on the development of a high poloidal beta scenario for the steady state missions of ITER and CFETR
Joint DIII-D/EAST research on the development of a high poloidal beta scenario for the steady state missions of ITER and CFETR Open
Experimental and modeling investigations on the DIII-D and EAST tokamaks show the attractive transport and stability properties of fully noninductive, high poloidal-beta (βP) plasmas, and their suitability for steady-state operating scenar…