A5091541798- Astrophysics and Star Formation Studies
- Stellar, planetary, and galactic studies
- Spectroscopy and Laser Applications
- Advanced ceramic materials synthesis
- Atmospheric Ozone and Climate
- High-Temperature Coating Behaviors
- Advanced materials and composites
- Galaxies: Formation, Evolution, Phenomena
- Radiation Detection and Scintillator Technologies
- Gamma-ray bursts and supernovae
- Metal and Thin Film Mechanics
- Molecular Spectroscopy and Structure
- Muon and positron interactions and applications
- Astrophysical Phenomena and Observations
- Image and Signal Denoising Methods
- Particle Detector Development and Performance
- Physics of Superconductivity and Magnetism
- Magnetic properties of thin films
- Image Enhancement Techniques
- Astro and Planetary Science
- Astrophysics and Cosmic Phenomena
- Medical Imaging Techniques and Applications
- Advanced Condensed Matter Physics
- Peroxisome Proliferator-Activated Receptors
- CCD and CMOS Imaging Sensors
Purple Mountain Observatory
2016-2025
Chinese Academy of Sciences
2016-2025
Zhujiang Hospital
2025
Southern Medical University
2025
Nanjing University
1996-2024
Nankai University
2024
Purple Mountain Laboratories
2024
Shenyang University of Chemical Technology
2024
University of Chinese Academy of Sciences
2016-2023
Beijing Normal University
2023
Underwater object detection is a crucial and challenging problem in marine engineering aquatic robotics. The difficulty partly because of the degradation underwater images caused by light selective absorption scattering. Intuitively, enhancing can benefit high-level applications like detection. However, it still unclear whether all detectors need image enhancement as preprocessing. We therefore pose questions <italic xmlns:mml="http://www.w3.org/1998/Math/MathML"...
Abstract We have obtained column density maps for an unbiased sample of 120 molecular clouds in the third quadrant Milky Way midplane ( b ≤ ∣5∣°) within Galactic longitude range from 195° to 225°, using high-sensitivity 12 CO and 13 J = 1 − 0) data Imaging Scroll Painting (MWISP) project. The probability functions hydrogen clouds, N-pdfs, are fitted with both a lognormal (LN) function plus power-law (LN+PL) function. classified into three categories according their shapes i.e., LN, LN+PL, UN...
Abstract The detection of clumps (cores) in molecular clouds is an important issue sub-millimetre astronomy. However, the completeness identification and accuracy returned parameters automated clump algorithms are still not clear. In this work, we test performance bias GaussClumps, ClumpFind, FellWalker, Reinhold, Dendrograms identifying simulated clumps. By designing with various sizes, peak brightness, crowdedness, investigate characteristics their performance. aspect completeness,...
We present a systematic analysis of the velocity structure functions (VSFs) 167 molecular clouds with angular sizes greater than $\sim$176 arcmin$^2$ in three sectors Galactic mid-plane. calculated 1st- to 3rd-order VSFs and found that 60\% exhibit power-law distributions. The relative exponents are consistent predictions from intermittent turbulence models. Column density weighting reduces proportion steepens VSF slopes, implying reduction turbulent energy high-density regions. All show...
Image retouching aims to enhance the visual quality of photos. Considering different aesthetic preferences users, target is subjective. However, current methods mostly adopt deterministic models, which not only neglects style diversity in expert-retouched results and tends learn an average during training, but also lacks sample inference. In this paper, we propose a diffusion-based method, named DiffRetouch. Thanks excellent distribution modeling ability diffusion, our method can capture...
Using the PMO-13.7m millimeter telescope at Delingha in China, we have conducted a large-scale simultaneous survey of $^{12}$CO, $^{13}$CO, and C$^{18}$O J=1-0 emission toward Rosette molecular cloud (RMC) region with sky coverage 3.5 $\times$ 2.5 deg$^2$. The majority comes from RMC complex velocities lying range -2 km s$^{-1}$ to 20.5 s$^{-1}$. Beyond this velocity range, 73 clumps are identified kinematic distances 2.4 kpc 11 kpc. Based on spatial distribution, nine individual clouds,...
We have studied the properties of molecular clouds in second quadrant Milky Way Mid-plane from l$=$104$.\!\!^{\circ}$75 to l$=$119$.\!\!^{\circ}$75 and b$=-$5$.\!\!^{\circ}$25 b$=$5$.\!\!^{\circ}$25 using $^{12}$CO, $^{13}$CO, C$^{18}$O $J=1-0$ emission line data Imaging Scroll Painting project (MWISP). identified 857 300 $^{12}$CO $^{13}$CO spectral cubes, respectively, DENDROGRAM + SCIMES algorithms. The distances are estimated physical like masses, sizes, surface densities tabulated....
Symmetry breaking plays a pivotal role in unlocking intriguing properties and functionalities material systems. For example, the of spatial temporal symmetries leads to fascinating phenomenon: superconducting diode effect. However, generating precisely controlling effect pose significant challenges. Here, we take novel route with deliberate manipulation magnetic charge potentials realize unconventional flux-quantum effects. We achieve this through suitably tailored nanoengineered arrays...
The positron implantation profiles and depth distribution in metal, semiconductor, polymer surfaces are simulated using the Monte-Carlo-method-based Geant4 toolkit. As per slow beam technique, monoenergetic beams (in range from 1 to 35 keV) with 1.5 mm radius is injected into semi-infinite samples present work. profile of 3.1 keV positrons Fe good agreement Makhovian profile. mean resolution exhibit a general negative correlation material densities incident position energy, respectively,...
The Galactic plane has been mapped from l=34.75d to 45.25d and b=-5.25d 5.25d in the CO (J=1-0) emission with 13.7 m telescope of Purple Mountain Observatory. unbiased survey covers a large area 100 square degrees sampled every 30" velocity resolution ~0.2km/s. In this paper, we present result an longitude latitude range -60km/s -10km/s. Over 500 molecular clouds (MCs) are picked out 12CO emission, 131 these MCs associated 13CO emission.The distant MCs, which lie beyond solar circle mostly...
We present CO observations toward three large supernova remnants (SNRs) in the third Galactic quadrant using Purple Mountain Observatory Delingha 13.7m radio telescope. The are part of high-resolution survey plane between longitudes l=-10deg to 250deg and latitudes b=-5deg 5d. emission was detected SNRs: G205.5+0.5 (Monoceros Nebula), G206.9+2.3 (PKS 0646+06), G213.0-0.6. Both SNRs G213.0-0.6 exhibit morphological agreement (or spatial correspondences) remnant surrounding molecular clouds...
Using the Five-hundred-meter Aperture Spherical radio Telescope (FAST), we detect a giant H i filamentary structure in sky region of 3077 < α 3110 and 409 δ 434. The has velocity range −170 to −130 km s−1, mean −150 putting it at Galactocentric distance 22 kpc. structure, which name Cattail, length 1.1 kpc, so far appears be furthest largest filament Galaxy. Its mass is calculated 6.5 × 104 M⊙ linear density 60 pc−1. width 207 pc, corresponding an aspect ratio 5:1. Cattail possesses small...
ABSTRACT The Deeper, Wider, Faster (DWF) program coordinates observations with telescopes across the electromagnetic spectrum, searching for transients on time-scales of milliseconds to days. tenth DWF observing run was carried out in near real-time during September 2021, and consisted six consecutive days NGC 6744 galaxy group a field containing repeating fast radio burst FRB 190711 Australian Square Kilometre Array Pathfinder, Dark Energy Camera, Hard X-ray Modulation Telescope, Parkes...
Using the HI self-absorption data from Five-hundred-meter Aperture Spherical radio Telescope (FAST), we perform a study of cold atomic gas in Cygnus-X North region. The most remarkable cloud is characterized by filamentary structure, associated space and velocity with principle molecular filament We investigate transition to filament. find that HII regions Cygnus OB2 G081.920+00.138 play critical role compressing shaping filament, where subsequently forms. DR21 has much larger column density...
Magnonics, which employs spin-waves to transmit and process information, is a promising venue for low-power data processing. One of the major challenges local control spin-wave propagation path. Here, we introduce concept writable magnonics by taking advantage highly flexible reconfigurability rewritability artificial spin ice systems. Using micromagnetic simulations, show that globally switchable locally nanochannels can be realized in ferromagnetic thin film underlying an pinwheel ice. The...
We have conducted a large-field simultaneous survey of $^{12}$CO, $^{13}$CO, and C$^{18}$O $J=1-0$ emission toward the Cassiopeia A (Cas A) supernova remnant (SNR), which covers sky area $3.5^{\circ}\times3.1^{\circ}$. The Cas giant molecular cloud (GMC) mainly consists three individual clouds with masses on order $10^4-10^5\ M_{\odot}$. total mass derived from $\rm{^{13}CO}$ GMC is 2.1$\times10^{5}\ M_{\odot}$ 9.5$\times10^5\ $\rm{^{12}CO}$ emission. Two regions broadened (6$-$7 km...
Data of $^{12}$CO/$^{13}$CO/C$^{18}$O $J=1\to0$ emission toward the Galactic plane region $l=35^\circ$ to $45^\circ$ and $b= -5^\circ$ $+5^\circ$ are available with Milky Way Imaging Scroll Painting (MWISP) project. Using data, we found a giant molecular filament (GMF) around $l\approx38\sim42^\circ$, $b\approx-3.5\sim0^\circ$, $V_{LSR} \approx 27 \sim 40$ km~s$^{-1}$, named GMF MWISP G041-01. At distance 1.7 kpc, is about 160 pc long. With median excitation temperature 7.5 K column density...