Studying the Properties of Accretion Disks and Coronae in Black Hole X-ray Binaries with Monte-Carlo Simulations
نویسندگان
چکیده
Understanding the properties of the hot corona is important for studying the accretion disks in black hole X-ray binary systems. Using the Monte-Carlo technique to simulate the inverse Compton scattering between photons emitted from the cool disk and electrons in the hot corona, we have produced four table models in the XSPEC format for different configurations of corona system, i.e., the thermal or power-law electron energy distribution in a spherical or disklike corona. All parameters in our table models are physical properties of the corona system and can be derived from directly fitting. Applying the models to broad-band spectra of the black hole candidate XTE J2012+381 observed with BeppoSAX, we estimate the size of the corona, the inclination angle of the accretion disk and the disk radius. According to fitting results with our table models, in XTE J2012+381 system, the size of the corona with a spherical geometry is several tens of the gravitational radius. Under these models, the substantive disk radius rises from hard-state to soft-state is not found and the inner disk radius is nearly a constant. Subject headings: accretion, accretion disks — black hole physics — X-rays: binaries — X-rays: individual (XTE J2012+381)
منابع مشابه
Studying the Properties of Accretion Disks and Coronae in Black Hole X-ray Binaries with Monte-Carlo Simulation
Understanding the properties of the hot corona is important for studying the accretion disks in black hole X-ray binary systems. Using the Monte-Carlo technique to simulate the inverse Compton scattering between photons emitted from the cold disk and electrons in the hot corona, we have produced two table models in the XSPEC format for the spherical corona case and the disk-like (slab) corona c...
متن کاملStudying the Accretion Disks in Black Hole X-ray Binaries with Monte-Carlo Simulations
Understanding the properties of the hot corona is very important for studying the accretion disks in black hole X-ray binary systems. Using the Monte-Carlo technique to simulate the inverse Compton scattering process between disk photons and electrons in the hot corona, we have produced two table models in the XSPEC package. Applying the models to the broad-band BeppoSAX observations of the bla...
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