observational overview of state transitions in x-ray binaries

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STEEP POWER-LAW STATE radio ejections Finally there’s the steep power-law state. In light curve this state is characterized by very strong flaring on a time scale of days. This state is only observed at the very highest luminosities. The spectrum of this state is dominated by a steep power -law component on top of a very hot accretion disk component. Again, the non-thermal component is poorly understood, but is is probably the results of inverse Compton scattering. We see many different types of power spectra and they seem to combine elements of power spectra seen in the other states, with different types of noise and QPOs. In the radio with often see optically thin ejection events. In a way it is quite similar to the intermediate state, with a hotter disk and the power-law changing in normalization rather than index. It has been suggested that this state corresponds to the presence of a thickened or slim disk.
RAPID X-RAY VARIABILITY Okay, let’s go back to see how the rapid X-ray variability evolves in the HID. First let me show how the overall strength of the variability changes.
Page 1 and 2: !""#$%&'()*#'"$++$+)&(),-#!.+/ 4566
Page 3 and 4: MORE BACKGROUND • 1996>: Dedicate
Page 5 and 6: TRANSIENT SOURCES • Relation betw
Page 7 and 8: OUTBURST LIGHT CURVES 4U 1543-47 GR
Page 9 and 10: ENERGY DEPENDENCE This movie (Homan
Page 11 and 12: SPECTRAL EVOLUTION GX 339-4 First I
Page 13 and 14: COLOR EVOLUTION hardness-intensity
Page 15 and 16: Luminosity (erg/s) SPECTRAL EVOLUTI
Page 17 and 18: XTE J1752-223 XTE J1908+094 SPECTRA
Page 19 and 20: SPECTRAL EVOLUTION GRO J1655-40 I
Page 21 and 22: SPECTRAL EVOLUTION GRO J1655-40 We
Page 23 and 24: SPECTRAL EVOLUTION GX 339-4 Transit
Page 25 and 26: IMPLICATIONS FOR ACCRETION • outb
Page 27 and 28: STATE CLASSIFICATION • Various cl
Page 29 and 30: RAPID X-RAY VARIABILITY • power d
Page 31 and 32: • low-luminosity version of the h
Page 33: INTERMEDIATE STATE Intermediate (tr
Page 37 and 38: Power type-B frequency up 1 10 100
Page 39 and 40: No Compact Jet (interaction with IS
Page 41 and 42: GRO J1655-40 weak abs. lines weak e
Page 43 and 44: Aql X-1 NEUTRON STARS hard - soft -
Page 45 and 46: Aql X-1 Back to the HID again. NEUT
Page 47 and 48: hard transitional Lin et al. 2009 H
Page 49 and 50: Lin et al. 2009 Homan et al. 2010 N

observational overview of state transitions in x-ray binaries

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