The local stability of the magnetized advection-dominated discs with the radial viscous force
arXiv:1802.09472 · doi:10.1093/mnras/sty537
Abstract
We study local stability of the advection-dominated optically thick (slim) and optically thin discs with purely toroidal magnetic field and the radial viscous force using a linear perturbation analysis. Our dispersion relation indicates that the presence of magnetic fields and radial viscous force cannot give rise to any new mode of the instability. We find, however, that growth rate of the thermal mode in the slim discs and that of the acoustic modes in the slim and optically thin discs are dramatically affected by the radial viscous force. This force tends to strongly decrease the growth rate of the outward-propagating acoustic mode (O-mode) at the short-wavelength limit, but it causes a slim disc to become thermally more unstable. We find that growth rate of the thermal mode increases in the presence of radial viscous force. This enhancement is more significant when the viscosity parameter is large. We also show that growth rate of the O-mode reduces when radial viscous force is considered. The growth rates of the thermal and acoustic modes depend on the magnetic field. Although the instability of O-mode for a stronger magnetic field case has a higher growth rate, the thermal mode of the slim discs can be suppressed when the magnetic field is strong. The inertial-acoustic instability of a magnetized disc may explain the quasi-periodic oscillations (QPOs) from the black holes.
arXiv commentAccepted for publication in MNRAS, 10 pages, 12 figures
References in corpus (38)
- Advection-Dominated Accretion: A Self-Similar Solution
- Advection-Dominated Accretion: Underfed Black Holes and Neutron Stars
- Modelling the behaviour of accretion flows in X-ray binaries
- The disc instability model for X-ray transients: evidence for truncation and irradiation
- Radiatively Inefficient Accretion in Nearby Galaxies
- A Jet-ADAF model for Sgr A*
- Slim Disk Model for Soft X-Ray Excess and Variability of Narrow-Line Seyfert 1 Galaxies
- Slim Disk Model for Ultra-Luminous X-Ray Sources
- Accretion Discs with Strong Toroidal Magnetic Fields
- Evidence for a Geometrically Thick Self-Gravitating Accretion Disk in NGC 3079
- Comptonization in Super-Eddington Accretion Flow and Growth Timescale of Supermassive Black Holes
- On the Thermal Stability of Radiation Dominated Accretion Disks
- Extreme Slim Accretion Disks and Narrow Line Seyfert 1 Galaxies: the Nature of the soft X-ray Hump
- Thin accretion disks are stabilized by a strong magnetic field
- Investigating slim disk solutions for HLX-1 in ESO 243-49
- Evidence for a Black Hole and Accretion Disk in the LINER NGC 4203
- On the origin of X-ray emission in some FR Is: ADAF or jet?
- On different types of instabilities in black hole accretion discs. Implications for X-ray binaries and AGN
- Black hole accretion discs
- X-ray Properties of Intermediate-Mass Black Holes in Active Galaxies. II. X-ray-Bright Accretion and Possible Evidence for Slim Disks
- Testing slim-disk models on the thermal spectra of LMC X-3
- Do Ultraluminous X-ray Sources Really Contain Intermediate-mass Black Holes?
- Thermal Instability of Advection-Dominated Disks against Local Perturbations
- Slim Disks with Transition Regions and Applications to Microquasars and Narrow Line Seyfert 1 Galaxies
- Variability of accretion flow in the core of the Seyfert galaxy NGC 4151
- X-ray observational signature of a black hole accretion disc in an active galactic nucleus RXJ1633+4718
- Variability of Accretion Disks Surrounding Black Holes ----- the Role of Inertial-Acoustic Mode Instabilities
- Inhomogeneous accretion discs and the soft states of black hole X-ray binaries
- The universal "heartbeat" oscillations in black hole systems accross the mass-scale
- Possible Origin of Rapid Variability of Gamma-Ray Bursts due to Convective Energy Transfer in Hyperaccretion Disks
- Low Frequency Quasi-Periodic Oscillations in Low Mass X-Ray Binaries and Galactic Black Hole Candidates
- Stability of a hot two-temperature accretion disc with advection
- The slim-disk state of the ultraluminous X-ray source in M83
- The Local Stability of Accretion Disks with Advection
- A possible disk mechanism for the 23d QPO in Mkn~501
- The role of nonthermal electrons in the optical continuum of stellar flares
- Long-Term X-Ray Variabilities of the Seyfert Galaxy MCG-2-58-22 : Secular Flux Decrease and Flares
- Thermal Stability of Magnetized, Optically Thin, Radiative Cooling-dominated Accretion Disks