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The Astrophysical Journal, 2006 We compare different examples of spherical accretion onto a gravitating mass. Limiting cases include the accretion of a collisionally dominated fluid and the accretion of collisionless particles.
Begelman M. C. +3 more
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Hoyle-Lyttleton Accretion onto Accretion Disks [PDF]
Publications of the Astronomical Society of Japan, 1999 We investigate Hoyle-Lyttleton accretion for the case where the central source is a luminous accretion disk. %In classical Hoyle-Lyttleton accretion onto a ``spherical'' source, accretion takes place in an axially symmetric manner around a so-called ...
Fukue, Jun, Ioroi, Masayuki
core +7 more sources
Physical Review D, 2011 We study steady-state spherically symmetric accretion of a galileon field onto a Schwarzschild black hole in the test fluid approximation. The galileon is assumed to undergo a stage of cosmological evolution, thus setting a non-trivial boundary condition
Babichev, E.
core +3 more sources
Accretion Disc Particle Accretion in Major Merger Simulations [PDF]
Monthly Notices of the Royal Astronomical Society, 2013 A recent approach to simulating localized feedback from active galactic nuclei by Power et al. (2011) uses an accretion disc particle to represent both the black hole and its accretion disc.
Thacker, Rob J., Wurster, James
core +4 more sources
A pebble accretion model for the formation of the terrestrial planets in the Solar System [PDF]
Science Advances, 2021 A new theory for formation of Earth by accretion of small pebbles explains how our planet acquired its water and carbon. Pebbles of millimeter sizes are abundant in protoplanetary discs around young stars. Chondrules inside primitive meteorites—formed by
A. Johansen +6 more
semanticscholar +1 more source
EPJ Web of Conferences, 2012 Invited review at "Assembling the Puzzle of the Milky Way", Grand Bornand, April 2011; 6 ...
Binney, J, Fraternali, F
openaire +8 more sources
Frontiers in Astronomy and Space Sciences, 2021 One normal outburst and three mini-outbursts have been detected by Rossi X-ray Timing Explorer satellite after 2000 in the well-known black hole X-ray binary XTE J1550-564.
Ai-Jun Dong +10 more
doaj +1 more source
Accrete, Accrete, Accrete… Bang! (and repeat): The remarkable Recurrent Novae [PDF]
Proceedings of The Golden Age of Cataclysmic Variables and Related Objects V — PoS(GOLDEN2019), 2021 All novae recur, but only a handful have been observed in eruption more than once. These systems, the recurrent novae (RNe), are among the most extreme examples of novae. RNe have long been thought of as potential type Ia supernova progenitors, and their claim to this 'accolade' has recently been strengthened. In this short review RNe will be presented
openaire +3 more sources
The Radiative Transfer in Accretion Discs with Linear Plank Function: Role of Scattering Effect [PDF]
Iranian Journal of Astronomy and Astrophysics, 2020 Radiative transfer in a geometrically thin accretion disc with fnite optical depth is considered under the plane-parallel approximation. The Eddington factor that is defned as the ratio of the mean intensity to radiation stress tensor, is assumed be ...
Fahimeh Habibi, Maryam Samadi
doaj +1 more source
Reference Array and Design Consideration for the Next-Generation Event Horizon Telescope
Galaxies, 2023 We describe the process to design, architect, and implement a transformative enhancement of the Event Horizon Telescope (EHT). This program—the next-generation Event Horizon Telescope (ngEHT)—will form a networked global array of radio dishes capable of ...
Sheperd S. Doeleman +28 more
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