2020
DOI: 10.1093/mnras/staa3920
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Simulations of radiation-driven winds from Keplerian discs

Abstract: We study the ejection of winds from thin accretion discs around stellar mass black holes and the time evolution of these winds in the presence of radiation field generated by the accretion disc. Winds are produced by radiation, thermal pressure, and the centrifugal force of the disc. The winds are found to be mildly relativistic, with speeds reaching up to terminal speeds of 0.1 for accretion rate of 4 in Eddington units. We show that the ejected matter gets its rotation by transporting angular momentum from t… Show more

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Cited by 7 publications
(7 citation statements)
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“…TVD scheme is an Eulerian, second-order accurate, finite difference scheme. Simulation codes based on TVD schemes are robust and efficiently capture shocks and these codes have been extensively used to study wide range of astrophysical problems (Ryu et al 1993;Lee et al 2011;Chattopadhyay et al 2012;Raychaudhuri et al 2021) The spatial and temporal evolution of conserved quantities , and is computed using Roe type Riemann solver. Second order accuracy is obtained by first modifying the flux function and then applying a non-oscillatory first-order accurate scheme (see Harten 1983;Ryu et al 1993, for details).…”
Section: Simulation Code and Numerical Methodsmentioning
confidence: 99%
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“…TVD scheme is an Eulerian, second-order accurate, finite difference scheme. Simulation codes based on TVD schemes are robust and efficiently capture shocks and these codes have been extensively used to study wide range of astrophysical problems (Ryu et al 1993;Lee et al 2011;Chattopadhyay et al 2012;Raychaudhuri et al 2021) The spatial and temporal evolution of conserved quantities , and is computed using Roe type Riemann solver. Second order accuracy is obtained by first modifying the flux function and then applying a non-oscillatory first-order accurate scheme (see Harten 1983;Ryu et al 1993, for details).…”
Section: Simulation Code and Numerical Methodsmentioning
confidence: 99%
“…In recent years there have been a large number of studies to investigate the propagation of relativistic jets and their interaction with ambient medium, effect of magnetic field on jets (Martí et al 1997;Duncan & Hughes 1994;Komissarov et al 2007;Mignone et al 2010;Walg et al 2014) but the numerical simulations of radiatively driven outflows are limited (Chattopadhyay & Chakrabarti 2002a;Chattopadhyay et al 2012;Raychaudhuri et al 2021) probably because of the general consensus that radiation is not an efficient accelerating agent (Guthmann et al 2002). There are some simulations of line driven winds to study the effect of radiation on outflows (Proga et al 2000;Nomura & Ohsuga 2017;Yang et al 2018) but the line forces are only effective when the temperature of wind is less than the ionization temperature ( < 10 5 ).…”
Section: Introductionmentioning
confidence: 99%
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“…In the relativistic radiation hydrodynamic regime, investigations by Chattopadhyay (2005) and Vyas & Chattopadhyay (2017, 2018, 2019 clearly highlight that the radiation field of the accretion disk plays a significant role in the acceleration of the jets. In addition to these steady-state investigations there are limited numerical simulations in the non-relativistic regime (Chattopadhyay & Chakrabarti 2002a;Chattopadhyay et al 2012;Raychaudhuri et al 2021;Joshi et al 2022). To study the effect of radiation on winds there are some simulations of line driven winds (Proga et al 2000;Yang et al 2018), but the line driven force is only effective when the wind is cold, so the line driven force is not applicable in hot plasma which is being considered in this paper.…”
Section: Introductionmentioning
confidence: 99%
“…In the relativistic radiation hydrodynamic regime, investigations by Chattopadhyay (2005) and Vyas & Chattopadhyay (2017, 2019 clearly highlight that the radiation field of the accretion disk plays a significant role in the acceleration of the jets. In addition to these steady-state investigations, there are limited numerical simulations in the nonrelativistic regime (Chattopadhyay & Chakrabarti 2002a;Chattopadhyay et al 2012;Raychaudhuri et al 2021;Joshi et al 2022). To study the effect of radiation on winds, there are some simulations of line-driven winds (Proga et al 2000;Yang et al 2018), but the line-driven force is only effective when the wind is cold, so the line-driven force is not applicable in hot plasma, which is being considered in this paper.…”
Section: Introductionmentioning
confidence: 99%