Yu, BPB;
Owen, ER;
Pan, K-C;
Wu, K;
Ferreras, I;
(2021)
Outflows from starburst galaxies with various driving mechanisms and their X-ray properties.
Monthly Notices of the Royal Astronomical Society
, 508
(4)
pp. 5092-5113.
10.1093/mnras/stab2738.
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Abstract
Outflows in starburst galaxies driven by thermal-mechanical energy, cosmic rays and their mix are investigated with 1D and 2D hydrodynamic simulations. We show that these outflows could reach a stationary state, after which their hydrodynamic profiles asymptotically approach previous results obtained semi-analytically for stationary outflow configurations. The X-rays from the simulated outflows are computed, and high-resolution synthetic spectra and broadband light curves are constructed. The simulated outflows driven by thermal mechanical pressure and CRs have distinguishable spectral signatures, in particular, in the sequence of the keV Kα lines of various ions and in the L-shell Fe emission complex. We demonstrate that broadband colour analysis in X-rays is a possible alternative means to probe outflow driving mechanisms for distant galaxies, where observations may not be able to provide sufficient photons for high-resolution spectroscopic analyses.
| Type: | Article |
|---|---|
| Title: | Outflows from starburst galaxies with various driving mechanisms and their X-ray properties |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1093/mnras/stab2738 |
| Publisher version: | https://doi.org/10.1093/mnras/stab2738 |
| Language: | English |
| Additional information: | Copyright © 2021 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. |
| Keywords: | galaxies: starburst, hydrodynamics, ISM: jets and outflows, X-rays: galaxies, cosmic rays, methods: numerical |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10135847 |
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