Testing the stability of supersonic ionized Bondi accretion flows with radiation hydrodynamics

Bert Vandenbroucke; Nina S Sartorio; Kenneth Wood; Kristin Lund; Diego Falceta-gonçalves; Thomas J Haworth; Ian Bonnell; Eric Keto; Daniel Tootill

doi:10.1093/mnras/stz357

Testing the stability of supersonic ionized Bondi accretion flows with radiation hydrodynamics

Bert Vandenbroucke, Nina S Sartorio, Kenneth Wood, Kristin Lund, Diego Falceta-gonçalves, Thomas J Haworth, Ian Bonnell, Eric Keto, Daniel Tootill

Research output: Contribution to journal › Article › peer-review

Abstract

We investigate the general stability of 1D spherically symmetric ionized Bondi accretion on to a massive object in the specific context of accretion on to a young stellar object. We first derive a new analytic expression for a steady-state two-temperature solution that predicts the existence of compact and hypercompact H ii regions. We then show that this solution is only marginally stable if ionization is treated self-consistently. This leads to a recurring collapse of the H ii region over time. We derive a semi-analytic model to explain this instability, and test it using spatially converged 1D radiation hydrodynamical simulations. We discuss the implications of the 1D instability on 3D radiation hydrodynamics simulations of supersonic accreting flows.

Original language	English
Pages (from-to)	3771-3782
Journal	Monthly Notices of the Royal Astronomical Society
Volume	485
Issue number	3
Early online date	5 Feb 2019
DOIs	https://doi.org/10.1093/mnras/stz357
Publication status	Published - 21 May 2019

Keywords

Hydrodynamics
Instabilities
Methods: numerical
HII regions

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10.1093/mnras/stz357

Vandenbroucke_2019_MNRAS_supersonic_AAM
Copyright © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the author created accepted manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1093/mnras/stz357
Accepted author manuscript, 1.62 MB

https://arxiv.org/abs/1903.00479

Astronomy at St Andrews 2015-2018: Astronomy at St Andrews 2015-2018
Jardine, M. M. (PI), Cameron, A. C. (CoI), Cyganowski, C. J. (CoI), Horne, K. D. (CoI) & Wood, K. (CoI)
Science & Technology Facilities Council
1/04/15 → 31/03/18
Project: Standard

Cite this

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title = "Testing the stability of supersonic ionized Bondi accretion flows with radiation hydrodynamics",

abstract = "We investigate the general stability of 1D spherically symmetric ionized Bondi accretion on to a massive object in the specific context of accretion on to a young stellar object. We first derive a new analytic expression for a steady-state two-temperature solution that predicts the existence of compact and hypercompact H ii regions. We then show that this solution is only marginally stable if ionization is treated self-consistently. This leads to a recurring collapse of the H ii region over time. We derive a semi-analytic model to explain this instability, and test it using spatially converged 1D radiation hydrodynamical simulations. We discuss the implications of the 1D instability on 3D radiation hydrodynamics simulations of supersonic accreting flows.",

keywords = "Hydrodynamics, Instabilities, Methods: numerical, HII regions",

author = "Bert Vandenbroucke and Sartorio, {Nina S} and Kenneth Wood and Kristin Lund and Diego Falceta-gon{\c c}alves and Haworth, {Thomas J} and Ian Bonnell and Eric Keto and Daniel Tootill",

note = "BV and KW acknowledge support from STFC grant ST/M001296/1. NSS would like to thank CAPES for graduate research funding. KL acknowledges support from the Carnegie Trust. DFG thanks the Brazilian agencies FAPESP (no. 2013/10559-3) and CNPq (no. 311128/2017-3) for financial support. TJH is funded by an Imperial College London Junior Research Fellowship.",

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doi = "10.1093/mnras/stz357",

language = "English",

volume = "485",

pages = "3771--3782",

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T1 - Testing the stability of supersonic ionized Bondi accretion flows with radiation hydrodynamics

AU - Vandenbroucke, Bert

AU - Sartorio, Nina S

AU - Wood, Kenneth

AU - Lund, Kristin

AU - Falceta-gonçalves, Diego

AU - Haworth, Thomas J

AU - Bonnell, Ian

AU - Keto, Eric

AU - Tootill, Daniel

N1 - BV and KW acknowledge support from STFC grant ST/M001296/1. NSS would like to thank CAPES for graduate research funding. KL acknowledges support from the Carnegie Trust. DFG thanks the Brazilian agencies FAPESP (no. 2013/10559-3) and CNPq (no. 311128/2017-3) for financial support. TJH is funded by an Imperial College London Junior Research Fellowship.

PY - 2019/5/21

Y1 - 2019/5/21

N2 - We investigate the general stability of 1D spherically symmetric ionized Bondi accretion on to a massive object in the specific context of accretion on to a young stellar object. We first derive a new analytic expression for a steady-state two-temperature solution that predicts the existence of compact and hypercompact H ii regions. We then show that this solution is only marginally stable if ionization is treated self-consistently. This leads to a recurring collapse of the H ii region over time. We derive a semi-analytic model to explain this instability, and test it using spatially converged 1D radiation hydrodynamical simulations. We discuss the implications of the 1D instability on 3D radiation hydrodynamics simulations of supersonic accreting flows.

AB - We investigate the general stability of 1D spherically symmetric ionized Bondi accretion on to a massive object in the specific context of accretion on to a young stellar object. We first derive a new analytic expression for a steady-state two-temperature solution that predicts the existence of compact and hypercompact H ii regions. We then show that this solution is only marginally stable if ionization is treated self-consistently. This leads to a recurring collapse of the H ii region over time. We derive a semi-analytic model to explain this instability, and test it using spatially converged 1D radiation hydrodynamical simulations. We discuss the implications of the 1D instability on 3D radiation hydrodynamics simulations of supersonic accreting flows.

KW - Hydrodynamics

KW - Instabilities

KW - Methods: numerical

KW - HII regions

U2 - 10.1093/mnras/stz357

DO - 10.1093/mnras/stz357

M3 - Article

SN - 0035-8711

VL - 485

SP - 3771

EP - 3782

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 3

ER -

Testing the stability of supersonic ionized Bondi accretion flows with radiation hydrodynamics

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Keywords

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Astronomy at St Andrews 2015-2018: Astronomy at St Andrews 2015-2018

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