柯如本 Krasnopolsky, Ruben

CompAS Project Scientist

photo of 柯如本
辦公室: ASMAB 1218
電子信箱: ruben _replace_to_@_ asiaa.sinica.edu.tw

研究興趣

Star formation, MHD simulations

期刊論文(中研院就職期間發表)(47)

  1. Krasnopolsky R; Puro T; Li W-W; Shang H; Väisälä MS; Mac Low M-M; Rheinhardt M; Korpi-Lagg M, "Iterative Poisson Solvers for Self-gravity with the GPU Code Astaroth", PASJ: 138(9), id.094502 (19 pp), Sep, 2026 [SCI] ( ADS | Fulltext )
  2. Su D; Hirotani K; Shang H; Krasnopolsky R, "Semi-analytical Radiative Transfer Modeling of the Centaurus A Jet: Spectral Energy Distribution, Coreshift, and Limb-brightening", PASP: 138(4), id.044102 (19 pp), Apr, 2026 [SCI] ( ADS | Fulltext )
  3. Hirotani K; Shang H; Krasnopolsky R; Matsushita S; Jeter B; Asada K, "Constraining Active Galactic Nucleus Jets with Spectrum and Core Shift: The Case of M87", ApJ: 991(1), id.117 (19 pp), Sep, 2025 [SCI]
  4. Wang Y-C (Wang, Ya-Chi); Shang H; Krasnopolsky R, "Resistive Collapse of 2D Nonrotating Magnetized Isothermal Toroids: Formation of Pseudodisks", ApJ: 987(2), id.123, Jul, 2025 [SCI]
  5. Zagorulia D; Shang H; Krasnopolsky R, "Polytropic Wind-driven Bubbles and their Shock Structures in Radially Stratified Ambient Media", PASP: 137(6), id.064301 (17 pp.), Jun, 2025 [SCI]
  6. Hirotani K; Shang H; Krasnopolsky R; Nishikawa K, "R-JET: A postprocessing code for radiative transport in relativistic jets", ApJ: 984(1), id.16 (16 pp), May, 2025 [SCI]
  7. Das I; Shang H; Krasnopolsky R, "How Does a Protostar Form by Magnetized Gravitational Collapse?", ApJ: 982(2), id. 193 (28pp), Mar, 2025 [SCI]
  8. Liu C-F; Shang H; Johnstone D; Ai T-H; Lee TM; Krasnopolsky R; Hirano N; Dutta S; Hsu S-Y; López-Vázquez JA; Liu S-Y; Liu T; Tatematsu KI; Zhang Q; Rawlings MG; Eden D; Ren Z; Sanhueza P; Kwon W; Lee CW; Kuan Y-J; Bandopadhyay S; Väisälä MS; Lee C-F; Das I, "ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP): Nested Morphological and Kinematic Structures of Outflows Revealed in SiO and CO Emission", ApJ: 979(1), id.17, Jan, 2025 [SCI]
  9. López-Vázquez JA; Lee C-F; Shang H; Cabrit S; Krasnopolsky R; Codella C; Liu C-F; Podio L; Dutta S; Murphy A; Wiseman J, "Multiple Components of the Outflow in the Protostellar System HH 212: Outer Outflow Shell, Rotating Wind, Shocked Wind, and Jet", ApJ: 977(1), id.126 (17 pp), Dec, 2024 [SCI]
  10. Ai T-H; Liu C-F; Shang H; Johnstone D; Krasnopolsky R, "A Unified Model for Bipolar Outflows from Young Stars: Kinematic and Mixing Structures in HH 30", ApJ: 964(2), id.147 (15 pp), Apr, 2024 [SCI]
  11. Hirotani K; Shang H; Krasnopolsky R; Nishikawa K, "Formation of Limb-brightened Radio Jets by Angle-dependent Energy Extraction from Rapidly Rotating Black Holes", ApJ: 965(1), id.50 (11 pp), Apr, 2024 [SCI]
  12. Motoyama K; Krasnopolsky R; Shang H; Aida K; Sakane E, "An Efficient Algorithm for Astrochemical Systems Using Stoichiometry Matrices", ApJS: 270(2), id.19 (11 pp), Jan, 2024 [SCI]
  13. Väisälä MS; Shang H; Galli D; Lizano S; Krasnopolsky R, "Exploring the Formation of Resistive Pseudodisks with the GPU Code Astaroth", ApJ: 959(1), id.32 (21pp), Dec, 2023 [SCI]
  14. Shang H; Krasnopolsky R; Liu C-F, "A Unified Model for Bipolar Outflows from Young Stars: Apparent Magnetic Jet Acceleration", ApJL: 945(1), id.L1 (21 pp), March, 2023 [SCI]
  15. Hirotani K; Shang H; Krasnopolsky R; Nishikawa K-I, "Two-dimensional Particle-in-Cell simulations of axisymmetric black hole magnetospheres: angular dependence of the Blandford-Znajek flux", ApJ: 943(2), id.164 (19 pp.), Feb, 2023 [SCI]
  16. Shang H; Liu C-F; Krasnopolsky R; Wang L-Y, "A Unified Model for Bipolar Outflows from Young Stars: Kinematic Signatures of Jets, Winds, and Their Magnetic Interplay with the Ambient Toroids", ApJ: 944(2), id.230 (55 pp), Feb, 2023 [SCI]
  17. Wang W (Wang, Weixiao); Väisälä MS; Shang H; Krasnopolsky R; Li Z-Y; Lam KH; Yuan F, "Magnetic Spirals in Accretion Flows Originated from Misaligned Magnetic Fields", ApJ: 928(1), id.85 (23pp), March, 2022 [SCI]
  18. 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]
  19. 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]
  20. Krasnopolsky R; Ponce-Martinez M (Ponce-Martinez, Mario); Shang H; Tseng Y-H; Yen CC (Yen, Chien-Chang), "Efficient Direct Method for Self-gravity in 3D, Accelerated by a Fast Fourier Transform", ApJS: 252(2), id.14 (14pp), Feb, 2021 [SCI]
  21. 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]
  22. 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]
  23. 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]
  24. 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]
  25. 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]
  26. 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]
  27. 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]
  28. 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]
  29. 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]
  30. 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]
  31. 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]
  32. 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]
  33. 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]
  34. 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]
  35. 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]
  36. 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]
  37. 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]
  38. 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]
  39. 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]
  40. Li Z-Y; Banerjee R; Pudritz RE; Jørgensen JK; Shang H; Krasnopolsky R; Maury A, "The Earliest Stages of Star and Planet Formation: Core Collapse, and the Formation of Disks and Outflows", Protostars and Planets: VI, 173-194, 2014
  41. 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]
  42. 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]
  43. 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]
  44. 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]
  45. 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]
  46. Krasnopolsky R; Li Z-Y; Shang H, "Disk Formation Enabled by Enhanced Resistivity", ApJ: 716(2), 1541-1550, June 20, 2010 [SCI]
  47. 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]