Connections between Narrow Line Seyfert 1 Galaxies and Stellar Black Hole Candidates(Session 7 : NLS1, a Mile Stone)

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概要

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• Connections between narrow line Seyfert 1 galaxies (NLSls) and black hole candidates are described. It has been pointed out that X-ray properties of NLSls are simlar to those of stellar black hole candidates (BHCs). It is, however, not clear that NLS1s are corresponding to what 'state' in the BHCs. Recently, rapid spectral variations during X-ray flares in a few NLSls have been discovered using ASCA data. The properties of the spectral variations are very similar to those seen in stellar black hole candidates in the hard state. Such temporal variability accompanying the spectral change has not been recognized in black hole candidates in other states. These and recent theoretical progress based on a time variability model of the BHCs in the hard state imply that the advection plays an important role in the accretion process not only in the BHCs in the hard state, but also in NLS1s.

• 理論物理学刊行会の論文
• 2004-11-15

著者

• NEGORO Hitoshi

  Department of Physics, Nihon University

• Negoro Hitoshi

  Nihon Univ. Tokyo

• Negoro H

  Inst. Physical And Chemical Res. Saitama

• Negoro Hitoshi

  The Institute Of Physical And Chemical Research (riken)

• Negoro Hitoshi

  Department Of Earth And Space Science Faculty Of Science Osaka University

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