Fragmentation of Collapsar Disks and the Production of Gravitational Waves
arXiv:astro-ph/0610696 · doi:10.1086/511672
Abstract
We argue that gravitational instability in the outer parts of collapsar disks may lead to fragmentation near the radius where helium photodisintegrates, because of the strong cooling provided by this process. This physics sets clear physical scales for the fragmentation conditions and the properties of gravitationally bound clumps. Collapse of a fragment proceeds until the neutrons become degenerate; a neutron star of mass ~0.1-1Msun may result. We find that tidal disruption of a fragment and accretion by the central black hole are too rapid to account for the durations of observed X-ray flares from long gamma-ray bursts. Prior to disruption, migration of the fragment is driven by gravitational radiation and disk viscosity, which act together to produce a unique gravitational-wave signature. Advanced LIGO may be able to detect such sources within ~100 Mpc.
Accepted for publication in The Astrophysical Journal, 5 pages, 2 figures; added noise estimates for enhanced LIGO and expanded discussion of rates
References in corpus (1)
Cited by in corpus (18)
- Time-Dependent Models of Accretion Disks Formed from Compact Object Mergers
- Long gravitational-wave transients and associated detection strategies for a network of terrestrial interferometers
- Search for Gravitational Waves Associated with Gamma-Ray Bursts Detected by Fermi and Swift During the LIGO-Virgo Run O3b
- Search for Gravitational Waves Associated with Gamma-Ray Bursts Detected by Fermi and Swift During the LIGO-Virgo Run O3a
- Multimessenger Search for Sources of Gravitational Waves and High-Energy Neutrinos: Results for Initial LIGO-Virgo and IceCube
- Multimessenger astronomy with the Einstein Telescope
- Flares in Gamma Ray Bursts: Disc Fragmentation and Evolution
- Detecting very long-lived gravitational-wave transients lasting hours to weeks
- Real-Time Detection of Unmodelled Gravitational-Wave Transients Using Convolutional Neural Networks
- Long-duration transient, gravitational-wave search pipeline
- Detecting and reconstructing gravitational waves from the next Galactic core-collapse supernova in the Advanced Detector Era
- First joint observation by the underground gravitational-wave detector, KAGRA, with GEO600
- All-sky search for long-duration gravitational-wave bursts in the third Advanced LIGO and Advanced Virgo run
- Gravitational Lensing of Core Collapse Supernova Gravitational Wave Signals
- Eccentricity as a signature of hierarchical subsolar-mass mergers in collapsar disks
- Collapsar Disk Outflows III: Detectable Neutrino and Gravitational Wave Signatures
- Constraining the gravitational-wave emission of core-collapse supernovae with ground-based detectors
- GRB variabilities and following gravitational waves induced by gravitational instability in NDAFs