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People > Research Fellow > Curriculum Vita
Accretion geometry of disks for LLAGN
Luminosity evolution of pulsar outer magnetospheric accelerators as a function of neutron star spin down luminosity.
“The First Hundred Million Years of the Solar System” workshop in November 2013
Accretion geometry of disks for LLAGN and high luminosity AGN corresponding to high and low rates of mass accretion respectively.
Stellar density wave of the spiral galaxy M81.
HYDRODYNAMICAL SIMULATIONS OF THE BARRED SPIRAL GALAXY NGC 1097
AMR Study of the Common Envelope Phase of Binary Evolution
Spiral density patterns calculated for the interaction between a dense stellar wind and a planet or brown dwarf orbiting the mass-losing star
The Existence of Inner Cool Disks in the Low Hard State of Accreting Black Holes
X-ray and Gamma-ray Emissions from Rotation Powered Millisecond Pulsars
Theoretical Spectra of the AM CVn Binary System SDSS J0926+3624: Effects of Irradiation onto the Donor Star
The Incidence of Non-spherical Circumstellar Envelopes in AGB Stars
On the Transition from Accretion Powered to Rotation Powered Millisecond Pulsars
Self-gravitational force calculation of infinitely thin gaseous disks
The Effect of Bars and Transient Spirals on the Vertical Heating in Disk Galaxies
Probing Substellar Companions of Asymptotic Giant Branch Stars through Spirals and Arcs
Impact of Type Ia Supernova Ejecta on a Helium Star Binary Companion
Taam, Ronald E.
Managing Deputy Director; Distinguished Research Fellow
photo of Taam, Ronald E.
Office: ASMAB 1210
TEL: +886-2-2366-5394
FAX: +886-2-2367-7849
Email: taam_replace2@_asiaa.sinica.edu.tw

Education and Positions

  • Professor Emeritus, Department of Physics and Astronomy, Northwestern University (2012~present)
  • Chairman, Department of Physics and Astronomy, Northwestern University (1995~1998)
  • Professor, Department of Physics and Astronomy, Northwestern University (1986~2012)
  • Associate Professor, Department of Physics and Astronomy, Northwestern University (1983~1986)
  • Assistant Professor, Department of Physics and Astronomy, Northwestern University (1978~1983)
  • Lecturer, Astronomy Department, UC Berkeley (1976~1978)
  • Postdoctoral Research Associate, Lick Observatory (1973~1976)
  • PhD, Columbia University (1973)

Research Interests

My research focuses on astrophysical hydrodynamics related to the formation and evolution of interacting binary systems and the structure and evolution of accretion disks surrounding compact objects. Specifically, efforts are directed toward understanding the nature of stellar X-ray sources as well as the nature of active galactic nuclei.

Recent Journal Papers

  1. Liu BF; Taam RE; Qiao E; Yuan W, "Centrally Concentrated X-Ray Radiation from an Extended Accreting Corona in Active Galactic Nuclei" , ASTROPHYSICAL JOURNAL: 847(2), 96, 2017-10 [SCI] (Fulltext)
  2. Kim H; Trejo A; Liu S-Y; Saha R; Taam RE; ...; Hirano N; et al., "The large-scale nebular pattern of a superwind binary in an eccentric orbit" , Nature Astronomy: 1, 0060, 2017-03
  3. Wu Y-T; Pfenniger D; Taam RE, "Time-dependent Corotation Resonance in Barred Galaxies" , ASTROPHYSICAL JOURNAL: 830(2), 111, 2016-10 [SCI] (Fulltext)
  4. Wang H-H; Taam RE; Yen CC*, "Self-Gravitational Force Calculation of Infinitesimally Thin Gaseous Disks on Nested Grids" , ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES: 224(2), 16, 2016-06 [SCI] (Fulltext)
  5. Kim H; Liu S-Y; Hirano N; Zhao-Geisler R; Trejo A; Yen H-W; Taam RE; Kemper F; et al .,. , "High-resolution CO observation of the carbon star CIT 6 revealing the spiral structure and a nascent bipolar outflow" , ASTROPHYSICAL JOURNAL: 814(1), 61, 2015-11 [SCI] (Fulltext)
  6. Wang H-H; Yen C-C; Taam RE, "Self-Gravitational Force Calculation of Second Order Accuracy for Infinitesimally Thin Gaseous Disks in Polar Coordinates" , ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES: 221(1), 2015-11 [SCI]
  7. Liu BF; Taam RE; Qiao E; Yuan W, "A Hybrid Two Component Accretion Flow Surrounding Supermassive Black Holes in AGNs" , ASTROPHYSICAL JOURNAL: 806(2), 223, 2015-06 [SCI] (Fulltext)
  8. Pan K-C; Ricker PM; Taam RE, "Simulations of the Symbiotic Recurrent Nova V407 Cyg I. Accretion and Shock Evolutions" , ASTROPHYSICAL JOURNAL: 806(1), 27, 2015-06 [SCI] (Fulltext)
  9. Lin L-H; Wang H-H; Hsieh P-Y; Taam RE; Yang C-C; Yen DCC, "Hydrodynamical simulations of the barred spiral galaxy NGC 1097" , Highlights of Astronomy:: 16, 376-376, 2015-03 (Fulltext)
  10. Wang H-H; Lee W-K; Taam RE; Feng C-C; Lin L-H, "Spiral Density Waves in M81. II. Hydrodynamic Simulations For Gas Response To Stellar Spiral Density Waves" , ASTROPHYSICAL JOURNAL: 800(2), 106, 2015-02 [SCI] (Fulltext)
  11. Pan K-C; Ricker PM; Taam RE, "Search for Surviving Companions in Type Ia Supernova Remnants" , ASTROPHYSICAL JOURNAL: 792(1), 71, 2014-09 [SCI] (Fulltext)
  12. Feng C-C; Lin L-H; Wang H-H; Taam RE, "Spiral Density Waves in M81. I. Stellar Spiral Density Waves" , ASTROPHYSICAL JOURNAL: 785(2), 103, 2014-04 [SCI] (Fulltext)
  13. Hyosun Kim, I-Ta Hsieh, Sheng-Yuan Liu, and Ronald E. Taam, "Evidence of a Binary Induced Spiral From an Incomplete Ring Pattern of CIT 6" , ASTROPHYSICAL JOURNAL: 776(2), 86, 2013-10 [SCI] (Fulltext)
  14. Kuo-Chuan Pan; Paul M. Ricker; and Ronald E. Taam , "Evolution of Post-Impact Remnant Helium Stars in Type Ia Supernova Remnants Within the Single Degenerate Scenario" , ASTROPHYSICAL JOURNAL: 773(1), 49, 2013-08 [SCI]
  15. Liu BF; Taam RE, "Constraints on the Viscosity and Magnetic Field in Hot Accretion Flows around Black Holes" , ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES: 207(1), 17, 2013-07 [SCI] (Fulltext)
  16. Lin L-H; Wang H-H; Hsieh P-Y; Taam RE; Yang C-C; Yen DCC, "Hydrodynamical Simulations of the Barred Spiral Galaxy NGC 1097" , ASTROPHYSICAL JOURNAL: 771(1), 8, 2013-07 [SCI] (Fulltext)
  17. Ivanova N; Justham S; Chen X; ...;Taam R; et al., "Common Envelope Evolution: Where We Stand and How We Can Move Forward" , ASTRONOMY AND ASTROPHYSICS REVIEW: 21, 59, 2013-02 [SCI] (Fulltext)
  18. Kanak Saha, Daniel Pfenniger, & Ronald E. Taam, "Meridional tilt of the stellar velocity ellipsoid during bar buckling instability" , ASTROPHYSICAL JOURNAL: 674(2), 123, 2013-02 [SCI] (Fulltext)
  19. Paul Kiel and Ronald E. Taam, "Accretion, Ablation and Propeller Evolution in Close Millisecond Pulsar Binary Systems" , ASTROPHYSICS AND SPACE SCIENCE: 348, 441, 2013 [SCI]
  20. Kim H; Taam RE, "A New Method of Determining the Characteristics of Evolved Binary Systems Revealed in the Observed Circumstellar Patterns: Application to AFGL 3068" , Astrophysical Journal Letters: 759(1), L22, 2012-11 [SCI] (Fulltext)
  21. Taam RE; Liu BF; Yuan W; Qiao E, "Disk Corona Interaction: Mechanism for the Disk Truncation and Spectrum Change in Low-luminosity Active Galactic Nuclei" , ASTROPHYSICAL JOURNAL: 759(1), 65, 2012-11 [SCI] (Fulltext)
  22. Pan K-C; Ricker PM; Taam RE, "Evolution of Post-Impact Companion Stars in SN Ia Remnants Within the Single-Degenerate Scenario" , ASTROPHYSICAL JOURNAL: 760(1), 21, 2012-11 [SCI] (Fulltext)
  23. Kim H; Taam RE, "Wide Binary Effects on Asymmetries in Asymptotic Giant Branch Circumstellar Envelopes" , ASTROPHYSICAL JOURNAL: 759(1), 59, 2012-11 [SCI] (Fulltext)
  24. Yen DCC; Taam RE; Yeh HC; Jea KC, "Self-gravitational Force Calculation of Infinitesimally Thin Gaseous Disks" , JOURNAL OF COMPUTATIONAL PHYSICS: 231(24), 8246-8261, 2012-10 [SCI] (Fulltext)
  25. Kuo-Chuan Pan, Paul M. Ricker, and Ronald E. Taam , "Impact of Type Ia Supernova Ejecta on Binary Companions in the Single-degenerate Scenario" , ASTROPHYSICAL JOURNAL: 750(2), 151, 2012-05 [SCI] (Fulltext)
  26. Paul M. Ricker and Ronald E. Taam, "An AMR Study of the Common Envelope Phase of Binary Evolution" , ASTROPHYSICAL JOURNAL: 746(1), 74, 2012-02 [SCI] (Fulltext)
  27. Kim H; Taam RE, "Probing Substellar Companions of AGB Stars through Spirals and Arcs" , ASTROPHYSICAL JOURNAL: 744(2), 136, 2012-01 [SCI]
  28. J. Takata, K. S. Cheng, and Ronald E. Taam, "X-Ray and Gamma-Ray Emissions from Rotation Powered Millisecond Pulsars" , ASTROPHYSICAL JOURNAL: 745(1), 100, 2012-01 [SCI]
  29. Michael Politano and Ronald E. Taam, "The Incidence of Non-spherical Circumstellar Envelopes in Asymptotic Giant Branch Stars" , ASTROPHYSICAL JOURNAL: 741(1), 5, 2011-11 [SCI] (Fulltext)
  30. Sujan Sengupta and Ronald E. Taam, "Theoretical Spectra of the AM CVn Binary System SDSS J0926+3624: Effects of Irradiation onto the Donor Star" , ASTROPHYSICAL JOURNAL: 739, 34, 2011-09 [SCI]
  31. Lin L-H; Taam RE; Yen DCC; Muller S; Lim J, "The Central Region of the Nearby Seyfert 2 Galaxy NGC 4945: A Pair of Spirals" , ASTROPHYSICAL JOURNAL: 731(1), 15, 2011-04 [SCI] (Fulltext)
  32. B.F.Liu, C. Done, (R. E. Taam), "The Effect of Coronal Radiation on a Residual Inner Disk in the Low/Hard Spectral State of Black Hole X-ray Binary Systems" , ASTROPHYSICAL JOURNAL: 726, 10, 2011-01 [SCI]
  33. P. H. T. Tam, C. Y. Hui, R. H. H. Huang, A. K. H. Kong, J. Takata, L. C. C. Lin, Y. J. Yang, K. S. Cheng, (R. E. Taam), "Evidence for Gamma-Ray Emission from the Low Mass X-ray Binary System FIRST J102347.6+003841" , Astrophysical Journal Letters: 724(2), L207-211, 2010-12 [SCI]
  34. J. Takata, K. S. Cheng, (Ronald E. Taam), "On the Transition from Accretion Powered to Rotation Powered Millisecond Pulsars" , The Astrophysical Journal Letters: 723(1), L68-L72, 2010-11 [SCI]
  35. Kanak Saha, (Yao Huan Tseng), (Ronald E. Taam), "The Effect of Bars and Transient Spirals on the Vertical Heating in Disk Galaxies" , The Astrophysical Journal: 721(2), 1878-1890, 2010-10 [SCI]
  36. Michael Politano, Marc van der Sluys, (Ronald E. Taam), Bart Willems, "Population Synthesis of Common Envelope Mergers. I. Giant Stars with Stellar or Substellar Companions" , The Astrophysical Journal: 720(2), 1752-1766, 2010-09 [SCI]
  37. C. J. Deloye, (R. E. Taam*), "Adiabatic Mass Loss and the Outcome of the Common Envelope Phase of Binary Evolution" , The Astrophysical Journal Letters: 719, L28-L31, 2010-08 [SCI]
  38. C. Y. Hui, K. S. Cheng, (Ronald E. Taam), "Dynamical Formation of Millisecond Pulsars in Globular Clusters" , The Astrophysical Journal: 714(2), 1149-1154, 2010-05 [SCI] (Fulltext)
  39. Kuo-Chuan Pan, Paul M. Ricker, (Ronald E. Taam), "Impact of Type Ia Supernova Ejecta on a Helium Star Binary Companion" , The Astrophysical Journal: 715(1), 78-85, 2010-05 [SCI]
  40. (Cai, M. J) and (Taam, R. E.), "The Equilibrium Structure of Prolate Magnetized Molecular Cores" , ASTROPHYSICAL JOURNAL LETTERS: 709(1), L79-L82, 2010-01 [SCI] (Fulltext)
  41. Liu BF; Taam RE, "Application of the Disk Evaporation Model to AGNs" , ASTROPHYSICAL JOURNAL: 707, 233-242, 2009-12 [SCI]
  42. Takata J; Taam RE, "Probing the Pulsar Wind in the gamma-ray Binary System PSR B1259-63/SS 2883" , ASTROPHYSICAL JOURNAL: 702(1), 100-113, 2009-09 [SCI] (Fulltext)
  43. Hui, C.Y., Cheng, K.S., and Taam, R.E. , "Diffuse X-ray Emission in Globular Cluster Cores" , The Astrophysical Journal: "700, 1233-1241", 2009-08 [SCI]
  44. Heinke CO; ...; Taam RE; et al., "Further Constraints on Thermal Quiescent X-Ray Emission from SAX J1808.4.3658" , ASTROPHYSICAL JOURNAL: 691(2), 1035-1041, 2009-02 [SCI] (Fulltext)
  45. Deloye CJ; Heinke CO; Taam RE; Jonker PG, "Optical Observations of SAX 1808.4-3658 During Quiescence" , MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY: 391(4), 1619-1628, 2008-12 [SCI] (Fulltext)
  46. Politano M; Taam RE; van der Sluys M; Willems B, "Common Envelope Mergers: A Possible Channel for Forming Single SdB Stars" , ASTROPHYSICAL JOURNAL: 687(2), L99-L102, 2008-11 [SCI] (Fulltext)
  47. Taam RE; Liu BF; Meyer F; Meyer-Hofmeister E, "On the Properties of Inner Cool Disks in the Hard State of Black Hole X-Ray Transient Systems" , ASTROPHYSICAL JOURNAL: 688(1), 527-536, 2008-11 [SCI] (Fulltext)
  48. Belczynski K; Taam RE, "The most massive progenitors of neutron stars: CXO J164710.2-455216" , ASTROPHYSICAL JOURNAL: 685(1), 400-405, 2008-09 [SCI] (Fulltext)
  49. Belczynski K; Taam RE; Rantsioiu E; van der Sluys M, "Black Hole Spin Evolution: Implications for Short-Hard Gamma-Ray Bursts and Gravitational Wave Detection" , ASTROPHYSICAL JOURNAL: 682(1), 474-486, 2008-07 [SCI] (Fulltext)
  50. Liu BF; Taam RE; Meyer-Hofmeister E; Meyer F, "The Existence of Inner Cool Disks in the Low/Hard State of Accreting Black Holes" , ASTROPHYSICAL JOURNAL: 671(1), 695-705, 2007-12 [SCI] (Fulltext)
  51. Dubus G; Taam RE; Hull C; Watson DM; Mauerhan JC, "Spitzer Space Telescope Observations of the Magnetic Cataclysmic Variable AE Aquarii" , ASTROPHYSICAL JOURNAL: 663(1), 516-521, 2007-07 [SCI] (Fulltext)
  52. Yuan F; Taam RE; Misra R; Wu XB; Xue YQ, "Accretion disk spectra of the brightest ultraluminous X-ray source in M82" , ASTROPHYSICAL JOURNAL: 658(1), 282-287, 2007-03 [SCI] (Fulltext)
  53. Willems B; Taam RE; Kolb U; Dubus G; Sandquist EL, "Theoretical orbital period distributions of cataclysmic variables above the period gap: Effects of circumbinary disks" , ASTROPHYSICAL JOURNAL: 657(1), 465-481, 2007-03 [SCI] (Fulltext)
  54. Becker W; Kramer M; Jessner A; Taam RE; et al., "A multiwavelength study of the pulsar PSR B1929+10 and its X-ray trail" , ASTROPHYSICAL JOURNAL: 645(2), 1421-1435, 2006-07 [SCI] (Fulltext)
  55. Cheng KS; Taam RE; Wang W, "Pulsar Wind Nebulae and the Nonthermal X-Ray Emission of Millisecond Pulsars" , ASTROPHYSICAL JOURNAL: 641(1), 427-437, 2006-04 [SCI] (Fulltext)
  56. Yuan F; Taam RE; Xue YQ; et al., "Hot one-temperature accretion flows revisited" , ASTROPHYSICAL JOURNAL: 636(1), 46-55, 2006-01 [SCI] (Fulltext)
TEL: 886-2-3365-2200 FAX: 886-2-2367-7849
General: asiaa_replace2@_asiaa.sinica.edu.tw Media Request: epo_replace2@_asiaa.sinica.edu.tw
11F of AS/NTU Astronomy-Mathematics Building, No.1, Sec. 4, Roosevelt Rd, Taipei 10617, Taiwan, R.O.C.