Systematic Research of Irradiation in Accretion Disks

1994 Fiscal Year Final Research Report Summary

• Project/Area Number: 05640313
• Research Category: Grant-in-Aid for General Scientific Research (C)
• Allocation Type: Single-year Grants
• Research Field: Astronomy
• Research Institution: Osaka-Kyoiku University
• Principal Investigator: FUKUE Jun Osaka-Kyoiku University, Astronomical Institute, Ass, Prof., 教育学部, 助教授 (80173326)
• Project Period (FY): 1993 – 1994
• Keywords: Astronomy / Accretion Disks / Asfnplysicul Jets / Active Galaxies / X-ray stars / Extradynamic Variables / Protoplanetary Disks

Research Abstract

We examined the various effects which an accretion disk suffered from irradiation by the central object and/or accretion disk itself. The followings are our main results.
(i) The effect of the Compton drag : The angular momentum of the gas is removed via the Compton drag of the radiation fields when the gas is optically thin. This is the new type driving mechanism, we call it the 'beta accretion disk' .
(ii) We examined the structure and evolution of such a beta disk in relation to protoplanetary disks, X-ray stars, and AGNs.
(iii) We also calculated the emission spectrum from the (relativistic) accretion disk which is irradiated by the central region. The spectrum is remarkably modified.
(iv) In order to explain the electron-positron pair annihilation line in X-ray nova, we constructed the model of an accretion disk wind blown off from the disk and calculated the line-emission spectrum.

Research Products

• [Publications] Mineshige S. et al.: "Time‐Dependent Disk Accretion in X-ray Nora" A-p J.426. 308-312 (1994)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] Fukue. J.: "Black Hole Syndrome in G. M. C. at G. C." PASJ. 46. 315-317 (1994)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] Yamada T. et al.: "Spectrum of a Relativisho A. D. in AGN" PASJ. 46. 553-557 (1994)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] Umemura M. Fukue J.: "Cosmological Spherical Aceretion" PASJ. 46. 567-574 (1994)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] Tsuribe, T. et al.: "Unsteady Disk Acretion in Ex. D. A." PASJ. 46. 597-603 (1994)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] Sanbuihi, K. et al.: "Emission-Line Profile of AD." PASJ. 46. 605-611 (1994)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] 横尾武男 他: "新・宇宙を解く" 恒星社, 265 (1993)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] 福江 純: "SFアニメを天文する" 日本評論社, 152 (1993)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] Yamada, T.and Fukue, J.: "Relativistic Patchwork Disks around a Schwarzschild Black Holes : Light Curves and Spectrum." Publ.Astron.Soc.Japan. Vol.45, No.1. 97-102 (1993)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] Sanbuichi, K., Yamada, T., and Fukue, J.: "Self-Irradiated Accretion Disks around Schwarzschild Black Holes." Publ.Astron.Soc.Japan. Vol.45, No.3. 443-448 (1993)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] Sanbuichi, K.and Fukue, J.: "The Astrophysical Torus II.Light Curves of SS433." Publ.Astron.Soc.Japan. Vol.45, No.5. 727-731 (1993)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] Fukue, J.and Sanbuichi, K.: "Irradiated Accretion Disks around Neutron Stars : Double-Peaked Spectrum." Publ.Astron.Soc.Japan. Vol.45, No.6. 831-833 (1993)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] Fukue, J.and Umemura, M.: "Cosmological Accretion Disks via External Radiation Drag." Publ.Astron.Soc.Japan. Vol.46, No.1. 87-95 (1994)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] Minesige, S., Hirano, A., Kitamoto, S., Yamada, T.T., and Fukue, J.: "Time-Dependent Disk Accretion in X-Ray Nova Muscae 1991." Astrphy.J.Vol.4, No.1. 308-312 (1994)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] Fukue, J.: "Black-Hole Syndrome in Giant Molecular Clouds at the Galactic Center." Publ.Astron.Soc.Japan. Vol.46, No.3. 315-317 (1994)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] Yamada, T.T., Mineshige, S., Ross, R.R., and Fukue, J.: "Spectrum of a Relativistic Accretion Disk in Active Galactic Nuclei." Publ.Astron.Soc.Japan. Vol.46, No.6. 553-557 (1994)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] Umemura, M.and Fukue, J.: "Cosmological Spherical Accretion via External Radiation Drag." Publ.Astron.Soc.Japan. Vol.46, No.6. 567-574 (1994)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] Tsuribe, T., Fukue, J., and Umemura, M.: "Unsteady Disk Accretion via External Radiation Drag." Publ.Astron.Soc.Japan. Vol.46, No.6. 597-603 (1994)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] Sanbuichi, K., Fukue, J., and Kojima, Y.: "Emission-Line Profiles of Accretion Disks with a Non-Axisymmetric Pattern." Publ.Astron.Soc.Japan. Vol.46, No.6. 605-611 (1994)
  • Description: 「研究成果報告書概要(欧文)」より