Post on 14-Jan-2016
description
SIS-BH workshop in Kyoto 2003
Connections between NLSy 1s and Stellar BHCs
Hitoshi NegoroNihon University
S. Miyamoto, S. Kitamoto (BHCs)W. Brinkmann, I. Papadakis, M. Glizzio, M. Matsuoka (NLSy1s)S. Mineshige (Accretion Disk Model)
SIS-BH workshop in Kyoto 2003
BHCs v.s. NLSy1s
Very High(Slim)
High/Soft(Intermediat
e)Low/Hard
(Off)
Soft Excess
Rapid Time Var.
Break Freq. in PSD
Comptonization
Very Bright
STATE Properties
SIS-BH workshop in Kyoto 2003
Ancient History of Timing Studies of BHCs
Nolan et al. 1981
SIS-BH workshop in Kyoto 2003
Fractal or Shots ?Cyg X-1 in the hard state (Ginga 1990)
SIS-BH workshop in Kyoto 2003
Dramatic Spectral Hardening in BHCs in the Hard State
0.2 sec
Negoro, Miyamoto & KItamoto 1994
SIS-BH workshop in Kyoto 2003
Comparison with Fourier Analayses
Negoro et al. 2001
SIS-BH workshop in Kyoto 2003
Current Status of Timing Studies of AGNs
Edelson et al. 2002Papadakis et al. 2002
Ark 564
ASCA
Ton S180
SIS-BH workshop in Kyoto 2003
Ark 564 ASCA longest-look
observation Edelson et al. 2002
SIS-BH workshop in Kyoto 2003
Ark 564
Cross Correlation Function (CCF) of
Intensity and Hardness Ratio
Cross Correlation Function (CCF) of
Intensity and Hardness RatioEvidence for the BH Evidence for the BH
Mass-Scaling LawMass-Scaling Law
Ark 564
Negoro, Brinkmann, Papadakis, Gliozzi, & Matsuoka (in prep)
≤ 1,000 sec~ dyn at 3rs for 106 M
SIS-BH workshop in Kyoto 2003Two Spectral Components & Rise and Decay Phase Energy
Spectra
Total Rise Phase (- average)
Decay Phase (-average)
SIS-BH workshop in Kyoto 2003
BHC in Other States
Li et al. 2002
Soft State
Negoro 1997
Very High State (QPO)GS1124-68
SIS-BH workshop in Kyoto 2003
Other NSLy1s ?Negoro et al. 1999MCG -6-30-15
also Tons S180, NGC 7314
SIS-BH workshop in Kyoto 2003
Origin of the flares/Shots
• flare/shot time scales (~ 105/2-5 s) >> dynamical time scales in the inner region of an Accretion Disk (< 103/1 ms)
• profile independent of the peak intensity
• rapid spectral hardeningLocal Events
Local InstabilityMagnetic ReconnectionsBeaming Effect (Rotating Hot Spots)
SIS-BH workshop in Kyoto 2003
Aperiodic Mass AccretionNegoro 1995
dr/dt = - C r -1/2
radial velocity
Clumping matter falling onto a BH
released energyL = GMm/2r2 (-dr/dt)
expected time variationL(t) = C’/( - t)
€
vr ∝ vKep ∝1 r
€
E p = −GM ˙ m
r∝−
1
r
r/rg6
Radial Velocity
Gravitational Potential
SIS-BH workshop in Kyoto 2003
Fractal Function Fits
simple = 5/3L(t) = C’/( - t)
~ 1
MachidaMachida et al. 2001et al. 2001
SIS-BH workshop in Kyoto 2003
Related Theoretical Works
Machida & Matsumoto 2003
Magnetic Reconnection
r
t
Manmoto et al. 1996
SIS-BH workshop in Kyoto 2003
Summary
• Rapid Specral Hardeningcommon to BHCs in the hard statealso likely to common to NLSy1 (and Sy1 ?)direct evidence for the BH accretion disk
• Origin of the Flares/ShotsAdvection dominated, aperiodic mass accretion onto a BH
(but probably in optically thick and thin accretion disks)Magnetic reconnection occurs near the innermost radius,
resulting in the rapid spectral hardening.
SIS-BH workshop in Kyoto 2003
The End
SIS-BH workshop in Kyoto 2003
Other BHCs
Negoro 1998
SIS-BH workshop in Kyoto 2003
Energy Spectrum of the Shots
Comptonized BBTBB ~ 0.2 keV,Te ~ 45 keV
Power Law ~ 1.45
SIS-BH workshop in Kyoto 2003
Extended Works - QPO in the very high state
• GS 1124-684
SIS-BH workshop in Kyoto 2003
Summary (BHCs in the hard state)Dynamic Accretion FlowDiagnostic of Accretion Disk
Convection, MHD,Mass ejection…
Local FluctuationsMagnetic ReconnectionPlasma Instability,(Self-Organized Criticality)
SIS-BH workshop in Kyoto 2003