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Foundations of Black Hole Accretion Disk Theory [PDF]

Living Reviews in Relativity, 2013
This review covers the main aspects of black hole accretion disk theory. We begin with the view that one of the main goals of the theory is to better understand the nature of black holes themselves.
Marek A. Abramowicz, P. Chris Fragile
doaj   +5 more sources

Observational properties of rigidly rotating dust configurations [PDF]

European Physical Journal C: Particles and Fields, 2017
We study the observational properties of a class of exact solutions of Einstein’s field equations describing stationary, axially symmetric, rigidly rotating dust (i.e. non-interacting particles).
Batyr Ilyas, Jinye Yang, Daniele Malafarina, Cosimo Bambi   +3 more
doaj   +4 more sources

Circumstellar Disk Accretion Across the Lagoon Nebula: The Influence of Environment and Stellar Mass [PDF]

The Astronomical Journal
Pre-main-sequence disk accretion is pivotal for determining the final stellar properties and the early conditions for close-in planets. We aim to establish the impact of internal (stellar mass) and external (radiation field) parameters on the disk ...
Laura Venuti, Ann Marie Cody, Giacomo Beccari, Luisa M. Rebull, Michael J. Irwin, Apoorva Thanvantri, Sowmya Thanvantri, Silvia H. P. Alencar, Clara O. Leal, Geert Barentsen, Janet E. Drew, Steve B. Howell   +11 more
doaj   +2 more sources

Direct URCA Processes in Supernovae and Accretion Disks with Arbitrary Magnetic Field [PDF]

EPJ Web of Conferences, 2017
An effect of a magnetic field of an arbitrary strength on the beta-decay and reactions related with it by the crossing symmetry (the beta-processes) in supernovae and accretion disks around black holes is analyzed.
Ognev Igor
doaj   +3 more sources

Thermal Spectra of Warped and Broken Accretion Disks

The Astrophysical Journal
Black holes may accrete gas with angular momentum vectors misaligned with the black hole spin axis. The resulting accretion disks are subject to Lense–Thirring precession, and hence torque. Analytical calculations and simulations show that Lense–Thirring
J. Speicher, O. Blaes
doaj   +2 more sources

“Dark Matter” in Accretion Disks [PDF]

, 2008
Using Spitzer Space Telescope photometric observations of the eclipsing, interacting binary WZ Sge, we have discovered that the accretion disk is far more complex than previously believed.
Steve B. Howell, D. W. Hoard, Carolyn Brinkworth, S. Kafka, Matthew J. Walentosky, Frederick M. Walter, Travis A. Rector   +6 more
openalex   +6 more sources

Discovery of Two Different Full Disk Evolutionary Patterns of M-type T Tauri Stars with LAMOST DR8

The Astrophysical Journal, 2023
The full disk, full of gas and dust, determines the upper limit of planet masses, and its lifetime is critical for planet formation, especially for giant planets.
Hasitieer Haerken, Guang-Wei Li, Min Li, Fuqing Duan, Yongheng Zhao   +4 more
doaj   +1 more source

Outflows and particle acceleration in the accretion disks of young stars [PDF]

EPJ Web of Conferences, 2019
Magneto-gas-dynamic (MGD) outflows from the accretion disks of T Tauri stars with fossil large-scale magnetic fileld are investigated. We consider two mechanisms of the outflows: rise of the magnetic flux tubes (MFT) formed in the regions of efficient ...
Khaibrakhmanov Sergey, Dudorov Alexander
doaj   +1 more source

Fragmentation of Massive Protostellar Disks [PDF]

, 2006
We examine whether massive-star accretion disks are likely to fragment due to self-gravity. Rapid accretion and high angular momentum push these disks toward fragmentation, whereas viscous heating and the high protostellar luminosity stabilize them.
Adams, Artymowicz, Bally, Bate, Bernard, Beuther, Burkert, Cesaroni, Cesaroni, Chevalier, Chick, Chini, Christopher D. Matzner, De Buizer, De Buizer, De Marchi, Faúndez, Figer, Fleck, Gammie, Gilbert, Goodman, Goodman, Hillenbrand, Hinkley, Kaitlin M. Kratter, Kenyon, Kim, Krumholz, Krumholz, Laughlin, Levin, Matzner, Matzner, McKee, Monnier, Myers, Nelson, Olmi, Palla, Patel, Pinsonneault, Plume, Rafikov, Rice, Semenov, Shakura, Shepherd, Shu, Tan, Tan, Tan, Terebey, Tout, Turner, Van Den Bergh, Webbink, Whitney, Wolfire, Zhang   +59 more
core   +4 more sources

Nucleosynthesis in Advective Accretion Disks Around Galactic and Extra-Galactic Black Holes [PDF]

, 1998
We compute the nucleosynthesis of materials inside advective disks around black holes. We show that composition of incoming matter can change significantly depending on the accretion rate and accretion disks.
B Paczyński, CJ Hogan, D Molteni, D Molteni, I Yi, JF Hawley, JW Hawley, L Jin, L Jin, MJ Rees, S Chakrabarti, S Ramadurai, SK Chakrabarti, SK Chakrabarti, SK Chakrabarti, SK Chakrabarti, SK Chakrabarti, SL Shapiro, TK Das   +18 more
core   +3 more sources