Meyer-Hofmeister, E., Liu, B. F., Meyer, F.
Soft and hard spectral states of X-ray transient sources reflect two modes of accretion, accretion via a geometrically thin, optically thick disk or an advection-dominated accretion flow (ADAF). The...
Application of the Disk Evaporation Model to AGNs (2009)
The disk corona evaporation model extensively developed for the interpretation of observational features of black hole X-ray binaries (BHXRBs) is applied to AGNs. Since the evaporation of gas in the...
Investigating the Disk-Corona Relation in a Blue AGN Sample (2009)
We compile a blue AGN sample from SDSS and investigate the ratio of hard X-ray to bolometric luminosity in dependence on Eddington ratio and black hole mass. Our sample comprises 240 radio-quiet...
A wealth of Galactic accreting X-ray binaries have been observed both in low/hard state and high/soft state. The transition between these two states was often detected. Observation shows that the...
On the Properties of Inner Cool Disks in the Hard State of Black Hole X-Ray Transient Systems (2008)
Taam, Ronald E., Liu, B. F., Meyer, F., Meyer-Hofmeister, E.
The formation of a cool disk in the innermost regions of black hole X-ray transient systems in the low hard state is investigated. Taking into account the combined cooling associated with the Compton...
The existence of inner cool disks in the low hard state of accreting black holes (2008)
Liu, B. F., Taam, Ronald E., Meyer, F., Meyer-Hofmeister, E.
On the properties of inner cool disks in the hard state of black hole X-ray transient systems (2008)
Taam, Ronald E., Liu, B. F., Meyer, F., Meyer-Hofmeister, E.
WZ Sagittae - an old dwarf nova (2007)
. We model the evolution of the accretion disk of WZ Sagittae during the long quiescence. We find that the large amount of mass in the disk derived from the outburst luminosity is a severe constraint...
The Existence of Inner Cool Disks in the Low Hard State of Accreting Black Holes (2007)
Liu, B. F., Taam, Ronald E., Meyer-Hofmeister, E., Meyer, F.
The condensation of matter from a corona to a cool, optically thick inner disk is investigated for black hole X-ray transient systems in the low hard state. A description of a simple model for the...
Disk-Evaporation Fed Corona: Structure and Evaporation Feature with Magnetic Field (2007)
Qian, Lei, Liu, B. F., Wu, Xue-Bing
The disk-corona evaporation model naturally interprets many observational phenomena in black hole X-ray binaries, such as the truncation of an accretion disk and the spectral state transitions. On...
The existence of inner cool disks in the low/hard state of accreting black holes (2007)
Liu, B. F., Taam, Ronald E., Meyer-Hofmeister, E., Meyer, F.
Meyer, F., Liu, B. F., Meyer-Hofmeister, E.
Context: Accretion onto galactic and supermassive black holes occurs in different modes, which are documented in hard and soft spectral states, commonly attributed to an advection-dominated flow...
An inner disk below the ADAF: the intermediate spectral state of black hole accretion (2006)
Liu, B. F., Meyer-Hofmeister, E.
Aims: The hard and soft spectral states of black hole accretion are understood as connected with ADAF accretion (truncated disk) and standard disk accretion, respectively. However, observations...
Liu, Y, Qu, X. H., Guo, H. W., Chen, H. J., Liu, B. F., Dong, S. J.
The carbon nanotubes-chitosan (CNTs-CS) composite provides a suitable biosensing matrix due to its good conductivity, high stability, and good biocompatibility. Enzymes can be firmly incorporated...
Liu, B. F., Meyer, F., Meyer-Hofmeister, E.
In neutron star and black hole X-ray binaries the transitions between the two spectral states, hard and soft, signals the change between accretion via a hot advection-dominated flow(ADAF) and disk...
Hysteresis in the transition between hard and soft spectral states of low-mass X-ray binaries (2005)
Hysteresis in spectral state transitions - a challenge for theoretical modeling (2004)
Meyer-Hofmeister, E., Liu, B. F., Meyer, F.
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...
A cool disk in the Galactic Center? (2004)
Liu, B. F., Meyer, F., Meyer-Hofmeister, E.
We study the possibility of a cool disk existing in the Galactic Center in the framework of the disk-corona evaporation/condensation model. Assuming an inactive disk, a hot corona should form above...
Spectra from a magnetic reconnection-heated corona in AGN (2003)
Liu, B. F., Mineshige, S., Ohsuga, K.
We investigate a corona coupled with underlying disk through magnetic field and radiation field, and present emergent spectra calculated from Monte Carlo simulations. The spectra are determined for...
A simple model for magnetic reconnection heated corona (2002)
Liu, B. F., Mineshige, S., Shibata, K.
We construct a simple model for a magnetic reconnection heated corona above a thin accretion disk in AGNs and Galactic black hole candidates(GBHCs). The basic assumptions are that (1) the magnetic...
Two-temperature coronal flow above a thin disk (2002)
Liu, B. F., Mineshige, S., Meyer, F., Meyer-Hofmeister, E., Kawaguchi, T.
We extended the disk corona model (Meyer & Meyer-Hofmeister 1994; Meyer, Liu, & Meyer-Hofmeister 2000a) to the inner region of galactic nuclei by including different temperatures in ions and...
Two-temperature coronal flow above a thin disk (2002)
Liu, B. F., Mineshige, S., Meyer, F., Meyer-Hofmeister, E., Kawaguchi, T.
We extended the disk corona model to the inner region of galactic nuclei by including different temperatures in ions and electrons as well as Compton cooling. We found that the mass evaporation rate,...
Black hole X-ray binaries: A new view on soft-hard spectral transitions (2000)
Meyer, F., Liu, B. F., Meyer-Hofmeister, E.
The theory of coronal evaporation predicts the formation of an inner hole in the cool thin accretion disk for mass accretion rates below a certain value (~ 1/50 of the Eddington mass accretion rate)...
Liu, B. F., Yuan, W., Meyer, F., Meyer-Hofmeister, E., Xie, G. Z.
We apply the disk-corona evaporation model (Meyer & Meyer-Hofmeister) originally derived for dwarf novae to black hole systems. This model describes the transition of a thin cool outer disk to a hot...
WZ Sagittae - an old dwarf nova (1998)
Meyer-Hofmeister, E., Meyer, F., Liu, B. F.
We model the evolution of the accretion disk of WZ Sagittae during the long quiescence. We find that the large amount of mass in the disk derived from the outburst luminosity is a severe constraint...
The plasma membrane calcium pump (PMCA) and sarco(endo)plasmic reticular calcium pump (SERCA) are important components of the Ca2+ homeostasis system responsible for intracellular Ca2+ signaling, yet...
The long-term optical behavior of MRK421 (1996)
Liu, F. K., Liu, B. F., Xie, G. Z.
All data available in B band for the BL Lac object MRK421 from 22 publications are used to construct a historical light curve, dating back to 1900. It is found that the light curve is very...