Y. Liu

ORCID: 0000-0002-2404-0758
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About
Contact & Profiles
Research Areas
  • Dark Matter and Cosmic Phenomena
  • Astrophysics and Cosmic Phenomena
  • Particle physics theoretical and experimental studies
  • Galaxies: Formation, Evolution, Phenomena
  • Radiation Therapy and Dosimetry
  • Video Surveillance and Tracking Methods
  • CCD and CMOS Imaging Sensors
  • Pulsars and Gravitational Waves Research
  • Solar and Space Plasma Dynamics
  • Stellar, planetary, and galactic studies
  • GNSS positioning and interference
  • Astronomy and Astrophysical Research
  • Radio Astronomy Observations and Technology
  • Neutrino Physics Research

Hebei University of Technology
2023

Purple Mountain Observatory
2022

Chinese Academy of Sciences
2022

Recent observations of the light component cosmic-ray spectrum have revealed unexpected features that motivate further and more precise measurements up to highest energies. The Dark Matter Particle Explorer is a satellite-based experiment has been operational since December 2015, continuously collecting data on high-energy cosmic particles with very good statistics, energy resolution, particle identification capabilities. In this work, latest proton+helium in range from 46 GeV 464 TeV are...

10.48550/arxiv.2304.00137 preprint EN cc-by arXiv (Cornell University) 2023-01-01

Context. High-redshift radio(-loud) galaxies (H z RGs) are massive with powerful radio-loud active galactic nuclei (AGNs) and serve as beacons for protocluster identification. However, the interplay between H RGs large-scale environment remains unclear. Aims. To understand connection surrounding obscured star formation, we investigated overdensity spatial distribution of submillimeter-bright (SMGs) in field 4C 23.56, a well-known RG at = 2.48. Methods. We used SCUBA-2 data ( σ ∼ 0.6 mJy) to...

10.1051/0004-6361/202348500 article EN cc-by Astronomy and Astrophysics 2024-08-06

More than a century after the performance of oil drop experiment, possible existence fractionally charged particles FCP still remains unsettled. The search for FCPs is crucial some extensions Standard Model in particle physics. Most previously conducted searches cosmic rays were based on experiments underground or at high altitudes. However, there have been few carried out orbit other AMS-01 flown by space shuttle and BESS balloon top atmosphere. In this study, we conduct an on-orbit data...

10.1103/physrevd.106.063026 article EN Physical review. D/Physical review. D. 2022-09-29

We present the first large sample of scintillation arcs in millisecond pulsars, analysing 12 sources observed with Large European Array for Pulsars (LEAP), and Effelsberg 100\,m telescope. estimate delays from multipath propagation, measuring significant correlated changes scattering timescales over a 10-year timespan. Many show compact concentrations power secondary spectrum, which PSRs J0613$-$0200 J1600$-$3053 can be tracked between observations, are consistent at fixed angular positions....

10.48550/arxiv.2306.13462 preprint EN cc-by arXiv (Cornell University) 2023-01-01

Quasars have an important role in the studies of galaxy evolution and star formation. The rare close projection two quasars sky allows us to study environment matter exchange around foreground quasar (QSOfg) background (QSObg). This paper proposes a pipeline DPQP for pair (QP) candidates’ detection based on photometric images corresponding spectra. consists three main parts: target source detector, regressor, discriminator. In first part, network–YOLOv4 (TSD-YOLOv4) classification network...

10.3390/universe9090425 article EN cc-by Universe 2023-09-21

More than a century after the performance of oil drop experiment, possible existence fractionally charged particles FCP still remains unsettled. The search for FCPs is crucial some extensions Standard Model in particle physics. Most previously conducted searches cosmic rays were based on experiments underground or at high altitudes. However, there have been few carried out orbit other AMS-01 flown by space shuttle and BESS balloon top atmosphere. In this study, we conduct an on-orbit data...

10.48550/arxiv.2209.04260 preprint EN other-oa arXiv (Cornell University) 2022-01-01
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