Hysteresis in spectral state transitions - a challenge for theoretical modeling

Abstract

Many low-mass X-ray binaries show both hard and soft spectral states. For several sources the transitions between these states have been observed, mostly from the soft to the hard state during a luminosity decrease. In a few cases also the transition from the hard to the soft state was observed, coincident with an increase of the luminosity. Surprisingly this luminosity was not the same as the one during a following change back to the hard state. The values differed by a factor of about 3 to 5. We present a model for this hysteresis in the light curves of low-mass X-ray binaries (sources with neutron stars or black holes). We show that the different amount of Compton cooling or heating acting on the accretion disk corona at the time of the transition causes this switch in the accretion mode at different mass accretion rates and therefore different luminosities. The inner disk during the soft state provides a certain amount of Compton cooling which is either not present or much less if the inner region is filled with a hot advection-dominated accretion flow (ADAF) that radiates a hard spectrum.

arXiv comment8 pages, 2 figures, accepted for publication in Astron. Astrophys

References in corpus (18)

• Advection-Dominated Accretion: Underfed Black Holes and Neutron Stars
• Advection-Dominated Accretion and the Spectral States of Black Hole X-Ray Binaries: Application to Nova Muscae 1991
• The Properties of X-Ray and Optical Light Curves of X-Ray Novae
• Do X-ray Binary Spectral State Transition Luminosities Vary?
• Black hole accretion discs: reality confronts theory
• Hard X-ray states and radio emission in GRS 1915+105
• Hysteresis in the Light Curves of Soft X-ray Transients
• Understanding the long-term spectral variability of Cygnus X-1 with BATSE and ASM observations
• Low radiative efficiency accretion in the nuclei of elliptical galaxies
• Temporal Properties of Cygnus X-1 During the Spectral Transitions
• Coronal--Temporal Correlations in GX339-4: Hysteresis, Possible Reflection Changes, and Implications for ADAFs
• Two-temperature coronal flow above a thin disk
• Spectral evolution of the microquasar XTE J1550-564 over its entire 2000 outburst
• Discovery of Recurring Soft to Hard State Transitions in LMC X-3
• A close look at the state transitions of Galactic black hole transients during outburst decay
• The formation of the coronal flow/ADAF
• An AGN Identification for 3EG J2006-2321
• The change from accretion via a thin disk to a coronal flow: dependence on the viscosity of the hot gas

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