Effect of Radiation Drag on Hoyle-Lyttleton Accretion

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Hoyle-Lyttleton type accretion was investigated by taking into account not only the effect of radiation pressure but also that of radiation drag. We calculated the trajectories of particles for three cases: only the effect of gravity is considered (case A); the effect of radiation pressure is taken into account (case B); the effect of radiation drag as well as radiation pressure is taken into account (case C). The accretion radii forthe former two cases are 2GM/upsilon^2_infty, for case A and 2GM(1-Gamma)/upsilon^2_infty, for case B, where M is the mass of the accreted object, upsilon_infty the relative velocity, and Gamma the normalized luminosity of the accreted object. We found that the accretion radius for case C is in between those of cases A and B under the present approximation;i.e., the accretion radius decreases due to radiation pressure, while it increases due to radiation drag. Inaddition, the accretion radius for case C becomes larger as the incident velocity becomes fast. The effect of radiation drag becomes ever more important when the velocity of the incident particle is comparable to the light speed.

収録刊行物

  • PASJ : publications of the Astronomical Society of Japan  

    PASJ : publications of the Astronomical Society of Japan 50(5), 495-500, 1998-10-25 

    Astronomical Society of Japan

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各種コード

  • NII論文ID(NAID)
    10002600460
  • NII書誌ID(NCID)
    AA1082896X
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00046264
  • NDL 記事登録ID
    4586223
  • NDL 雑誌分類
    ZM33(科学技術--宇宙科学)
  • NDL 請求記号
    Z53-A296
  • データ提供元
    CJP書誌  NDL  IR 
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