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Schellenberger, G, Bogdán, Á, ZuHone, JA, Oppenheimer, BD, Truong, N, Khabibullin, I, Jennings, F, Pillepich, A, Burchett, J, Carr, C, Chakraborty, P, Crain, R, Forman, W, Jones, C, Kilbourne, CA, Kraft, RP, Markevitch, M, Nagai, D, Nelson, D, Ogorzalek, A , Randall, S, Sarkar, A, Schaye, J, Veilleux, S, Vogelsberger, M, Wang, QD and Zhuravleva, I (2024) Mapping the Imprints of Stellar and Active Galactic Nucleus Feedback in the Circumgalactic Medium with X-Ray Microcalorimeters. Astrophysical Journal, 969 (2). ISSN 0004-637X
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Mapping the Imprints of Stellar and Active Galactic Nucleus Feedback in the Circumgalactic Medium with X-Ray Microcalorimeters.pdf - Published Version Available under License Creative Commons Attribution. Download (4MB) | Preview |
Abstract
The Astro2020 Decadal Survey has identified the mapping of the circumgalactic medium (CGM; the gaseous plasma around galaxies) as a key objective. We explore the prospects for characterizing the CGM in and around nearby galaxy halos with a future large-grasp X-ray microcalorimeter. We create realistic mock observations from hydrodynamical simulations (EAGLE, IllustrisTNG, and Simba) that demonstrate a wide range of potential measurements, which will address the open questions in galaxy formation and evolution. By including all background and foreground components in our mock observations, we show why it is impossible to perform these measurements with current instruments, such as X-ray CCDs, and why only microcalorimeters will allow us to distinguish the faint CGM emission from the bright Milky Way (MW) foreground emission lines. We find that individual halos of MW mass can, on average and depending on star formation rate, be traced out to large radii, around R500, and for larger galaxies even out to R200, using prominent emission lines, such as O vii, or O viii. Furthermore, we show that emission-line ratios for individual halos can reveal the radial temperature structure. Substructure measurements show that it will be possible to relate azimuthal variations to the feedback mode of the galaxy. We demonstrate the ability to construct temperature, velocity, and abundance ratio maps from spectral fitting for individual galaxy halos, which reveal rotation features, active galactic nucleus outbursts, and enrichment.
| Item Type: | Article |
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| Uncontrolled Keywords: | 0201 Astronomical and Space Sciences; 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics; 0306 Physical Chemistry (incl. Structural); Astronomy & Astrophysics |
| Subjects: | Q Science > QB Astronomy Q Science > QC Physics |
| Divisions: | Astrophysics Research Institute |
| Publisher: | American Astronomical Society |
| SWORD Depositor: | A Symplectic |
| Date Deposited: | 25 Sep 2024 13:35 |
| Last Modified: | 25 Sep 2024 13:45 |
| DOI or ID number: | 10.3847/1538-4357/ad4548 |
| URI: | https://researchonline.ljmu.ac.uk/id/eprint/24265 |
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