A new approach for probing circumbinary disks
arXiv:0809.0836 · doi:10.1088/0004-637X/691/1/L5
Abstract
Circumbinary disks are considered to exist in a wide variety of astrophysical objects, e.g., young binary stars, protoplanetary systems, and massive binary black hole systems in active galactic nuclei (AGNs). However, there is no definite evidence for the circumbinary disk except for some in a few young binary star systems. In this Letter, we study possible oscillation modes in circumbinary disks around eccentric and circular binaries. We find that progarde, nonaxisymmetric waves are induced in the inner part of the circumbinary disk by the tidal potential of the binary. Such waves would cause variabilities in emission line profiles from circumbinary disks. Because of prograde precession of the waves, the distance between each component of the binary and the inner edge of the circumbinary disk varies with the beat period between the precession period of the wave and the binary orbital period. As a result, light curves from the circumbinary disks are also expected to vary with the same period. The current study thus provides a new method to detect circumbinary disks in various astrophysical systems.
Accepted for publication in ApJ Letters (3/Dec/2008), 4pages, 1figure
References in corpus (11)
- A Fundamental Relation Between Supermassive Black Holes and Their Host Galaxies
- The Demography of Massive Dark Objects in Galaxy Centres
- A Relationship Between Nuclear Black Hole Mass and Galaxy Velocity Dispersion
- An Eccentric Circumbinary Accretion Disk and the Detection of Binary Massive Black Holes
- Eccentricity Evolution for Planets in Gaseous Disks
- Rapid Formation of Supermassive Black Hole Binaries in Galaxy Mergers with Gas
- Disk eccentricity and embedded planets
- Binary Black Hole Accretion Flows in Merged Galactic Nuclei
- Circumbinary disk evolution
- A supermassive binary black hole with triple disks
- Evolution of irradiated Circumbinary Disks
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- Modelling circumbinary protoplanetary disks: I. Fluid simulations of the Kepler-16 and 34 systems
- Binary Black Hole Accretion Flows From a Misaligned Circumbinary Disk
- Can angular momentum loss cause the period change of NN Ser?
- Radiatively inefficient accretion flows induced by gravitational-wave emission before massive black hole coalescence
- Warping and tearing of misaligned circumbinary disks around eccentric SMBH binaries
- On the Formation of SMC X-1: the Effect of Mass and Orbital Angular Momentum Loss
- Insights from Analytical Theory of Eccentric Circumbinary Disks
- Radiation-Driven Warping of Circumbinary Disks Around Eccentric Young Star Binaries