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Observational signatures of early disk formation by MHD models
An early disk in formation from collapsing magnetic flows
Polarization Calculation and Visualization from MHD Simulation Data
Protostellar Accretion Flows Destabilized by Magnetic Flux Redistribution
Two-Temperature Model for Magnetized Protostellar Outflows
Disk Formation Enabled by the Hall Effect
Disk Formation Enabled by Enhanced Resistivity
Disk Formation through Pseudodisk Warping and Reconnections in Turbulent Magnetized Cores
Disk Formation Enabled by Misalignment between Magnetic Fields and Rotation Axis
A hydrochemical hybrid code (KM2) and its benchmarks for a Photon-Dominated Region (PDR)
Krasnopolsky, Ruben
CompAS Project Scientist
photo of Krasnopolsky, Ruben
Office: ASMAB 1218
TEL: +886-2-2366-5407
FAX: +886-2-2367-7849
Email: ruben_replace2@_asiaa.sinica.edu.tw

Research Interests

Star formation, MHD simulations

Journal Papers affiliated with ASIAA

  1. Hirotani K; Krasnopolsky R; Shang H; Nishikawa K-I; Watson M, "Two-dimensional Particle-in-Cell Simulations of Axisymmetric Black Hole Magnetospheres" , ApJ: 908(1), id.88 (19pp), Feb, 2021 [SCI] ( ADS | Fulltext )
  2. Krasnopolsky R; Ponce-Martinez MP; Shang H; Tseng Y-H; Yen CC, "Efficient Direct Method for Self-gravity in 3D, Accelerated by a Fast Fourier Transform" , ApJS: 252(2), id.14 (14pp), Feb, 2021 [SCI] ( ADS | Fulltext )
  3. Väisälä MS; Pekkilä J; Käpylä MJ; Rheinhardt M; Shang H; Krasnopolsky R, "Interaction of Large- and Small-scale Dynamos in Isotropic Turbulent Flows from GPU-accelerated Simulations" , ApJ: 907(2), id.83 (18pp.), Feb, 2021 [SCI] ( ADS | Fulltext )
  4. Zhao B; Caselli P; Li Z-Y; Krasnopolsky R; Shang H; Lam KH, "The Interplay between Ambipolar Diffusion and Hall Effect on Magnetic Field Decoupling and Protostellar Disc Formation" , MNRAS: 505(4), 5142-5163, Aug, 2021 [SCI] ( ADS | Fulltext )
  5. Shang H; Krasnopolsky R; Liu C-F; Wang L-Y, "A Unified Model for Bipolar Outflows from Young Stars: The Interplay of Magnetized Wide-angle Winds and Isothermal Toroids" , ApJ: 905(2), id.116 (52pp.), Dec, 2020 [SCI] ( ADS | Fulltext )
  6. Yen H-W; Zhao B; Koch P; Krasnopolsky R; Li Z-Y; Ohashi N; Shang H; Takakuwa S; Tang Y-W, "Transition from Ordered Pinched to Warped Magnetic Field on a 100 au Scale in the Class 0 Protostar B335" , ApJ: 893(1), id.54 (11pp.), Apr, 2020 [SCI] ( ADS | Fulltext )
  7. Zhao B; Caselli P; Li Z-Y; Krasnopolsky R; Shang H; et al., "Hall effect in protostellar disc formation and evolution" , MNRAS: 492(3), 3375-3395, Mar, 2020 [SCI] ( ADS | Fulltext )
  8. Suriano SS; Li Z-Y; Krasnopolsky R; ...; Shang H; et al., "The formation of rings and gaps in wind-launching non-ideal MHD discs: three-dimensional simulations" , MNRAS: 484(1), 107-124, Mar, 2019 [SCI] ( ADS | Fulltext )
  9. Vaisala M; Shang H; Krasnopolsky R; Liu S-Y; et al., "Time Evolution of 3D Disk Formation with Misaligned Magnetic Field and Rotation Axes" , ApJ: 873(2), id. 114 (22 pp.), Mar, 2019 [SCI] ( ADS | Fulltext )
  10. Yen H-W; Zhao B; Hsieh I-T; Koch P; Krasnopolsky R; Lee C-F; Li Z-Y; Liu S-Y; Ohashi N; Takakuwa S; Tang Y-W; et al., "JCMT POL-2 and ALMA Polarimetric Observations of 6000─100 au Scales in the Protostar B335: Linking Magnetic Field and Gas Kinematics in Observations and MHD Simulations" , ApJ: 871(2), id. 243 (18 pp.), Feb, 2019 [SCI] ( ADS | Fulltext )
  11. Girart JM; Fernández-López M; Li Z-Y; ...; Krasnopolsky R; ...; Rao R; et al., "Resolving the Polarized Dust Emission of the Disk around the Massive Star Powering the HH 80–81 Radio Jet" , ApJL: 856(2), L27, April, 2018 [SCI] ( ADS | Fulltext )
  12. Suriano SS; Li Z-Y; Krasnopolsky R; Shang H, "The formation of rings and gaps in magnetically coupled disk-wind systems: ambipolar diffusion and reconnection" , MNRAS: 477(1), 1239-1257, June, 2018 [SCI] ( ADS | Fulltext )
  13. Yen H-W; Zhao B; Koch PM; Krasnopolsky R; Li Z-Y; Ohashi N; Takakuwa S, "Constraint on ion-neutral drift velocity in the Class 0 protostar B335 from ALMA observations" , A&A: 615, id.A58 (11 pp.), July, 2018 [SCI] ( ADS | Fulltext )
  14. Zhao B; Caselli P; Li Z-Y; Krasnopolsky R, "Decoupling of magnetic fields in collapsing protostellar envelopes and disc formation and fragmentation" , MNRAS: 473(4), 4868-4889, Feb, 2018 [SCI] ( ADS | Fulltext )
  15. Suriano SS; Li ZY; Krasnopolsky R; Shang H, "Rings and gaps produced by variable magnetic disc winds and avalanche accretion streams - I. Axisymmetric resistive MHD simulations" , MNRAS: 468(4), 3850-3868, July, 2017 [SCI] ( ADS | Fulltext )
  16. Yen H-W; Koch PM; Takakuwa S; Krasnopolsky R; Ohashi N; et al., "Signs of Early-stage Disk Growth Revealed with ALMA" , ApJ: 834(2), 178, Jan, 2017 [SCI] ( ADS | Fulltext )
  17. Zhao B; Caselli P; Li Z-Y; Krasnopolsky R; Shang H; Nakamura F, "Protostellar disc formation enabled by removal of small dust grains" , MNRAS: 460(2), 2050-2076, Aug 1, 2016 [SCI] ( ADS | Fulltext )
  18. Motoyama K; Morata O; Shang H; Krasnopolsky R; Hasegawa T, "A hydrochemical hybrid code for astrophysical problems. I. Code verification and benchmarks for Photon-Dominated Region (PDR)" , ApJ: 808(1), 46, July, 2015 [SCI] ( ADS | Fulltext )
  19. Wang L-Y; Shang H; Krasnopolsky R; Chiang T-Y, "A Two-Temperature Model of Magnetized Protostellar Outflows" , ApJ: 815(1), 39, Oct 10, 2015 [SCI] ( ADS | Fulltext )
  20. Yen H-W; Takakuwa S; Koch PM; ...; Krasnopolsky R; Ohashi N, "No Keplerian Disk >10 AU around the Protostar B335: Magnetic Braking or Young Age?" , ApJ: 812(2), 129, Oct 20, 2015 [SCI] ( ADS | Fulltext )
  21. Lee CF; Hirano N; Zhang QZ; Shang H; Ho PTP; Krasnopolsky R, "ALMA Results of the Pseudodisk, Rotating Disk, and Jet in the Continuum and HCO+ in the Protostellar System HH 212" , ApJ: 786(2), 114, May, 2014 [SCI] ( ADS | Fulltext )
  22. Li ZY; Krasnopolsky R; Shang H; Zhao B, "On the Role of Pseudodisk Warping and Reconnection in Protostellar Disk Formation in Turbulent Magnetized Cores" , ApJ: 793(2), 130, Oct, 2014 [SCI] ( ADS | Fulltext )
  23. Li Z-Y; Krasnopolsky R; Shang H, "Does Magnetic-field-Rotation Misalignment Solve the Magnetic Braking Catastrophe in Protostellar Disk Formation?" , ApJ: 774(1), 82, Sept 1, 2013 [SCI] ( ADS | Fulltext )
  24. Krasnopolsky R; Li Z-Y; Shang H; Zhao B, "Protostellar Accretion Flows Destabilized by Magnetic Flux Redistribution" , ApJ: 757(1), 77, Sept 20, 2012 [SCI] ( ADS | Fulltext )
  25. Krasnopolsky R; Li Z-Y; Shang H, "Disk Formation in Magnetized Clouds Enabled by the Hall Effect" , ApJ: 733(1), 54, May 20, 2011 [SCI] ( ADS | Fulltext )
  26. Li Z-Y; Krasnopolsky R; Shang H, "Non-ideal MHD Effects and Magnetic Braking Catastrophe in Protostellar Disk Formation" , ApJ: 738(2), 180, Sept 10, 2011 [SCI] ( ADS | Fulltext )
  27. Zhao B; Li Z-Y; Nakamura F; Krasnopolsky R; Shang H, "Magnetic Flux Expulsion in Star Formation" , ApJ: 742(1), 10, Nov 20, 2011 [SCI] ( ADS | Fulltext )
  28. Krasnopolsky R; Li Z-Y; Shang H, "Disk Formation Enabled by Enhanced Resistivity" , ApJ: 716(2), 1541-1550, June 20, 2010 [SCI] ( ADS | Fulltext )
  29. Krasnopolsky R; Shang H; Li Z-Y, "Topologies of Current-Free Axisymmetric Magnetospheres in Star-Disk Systems" , ApJ: 703(2), 1863-1871, Oct 1, 2009 [SCI] ( ADS | Fulltext )
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