Detection of Thermal Sunyaev–Zel’dovich Effect in the Circumgalactic Medium of Low-mass Galaxies—A Surprising Pattern in Self-similarity and Baryon Sufficiency

Das, Sanskriti; Chiang, Yi-Kuan; Mathur, S.

doi:10.3847/1538-4357/acd764

Cited by 4 publications

(2 citation statements)

References 83 publications

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“…Recently Kim et al (2022) used the IllustrisTNG, EAGLE and FIRE simulations to infer that the properties of the circumgalactic medium (CGM) and the ICM are highly sensitive to feedback prescriptions, and concluded that SZ measurements of the gas can potentially put constraints on theoretical models. A detection of the SZ effect in the CGM has been recently reported by Das et al (2023). In the current work, we use the cosmological simulation SIMBA (D19) to constrain models of AGN feedback using ALMA compact array observations.…”

Section: Discussion Of Resultsmentioning

confidence: 99%

Cosmological Simulations of Galaxy Groups and Clusters. III. Constraining Quasar Feedback Models with the Atacama Large Millimeter Array

Chakraborty,

Chatterjee,

Lacy

et al. 2023

ApJ

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The thermal Sunyaev–Zeldovich (SZ) effect serves as a direct potential probe of the energetic outflows from quasars that are responsible for heating the intergalactic medium. In this work, we use the GIZMO meshless finite mass hydrodynamic cosmological simulation SIMBA, which includes different prescriptions for quasar feedback, to compute the SZ effect arising from different feedback modes. From these theoretical simulations, we perform mock observations of the Atacama Large Millimeter Array (ALMA) in four bands (320, 135, 100, and 42 GHz) to characterize the feasibility of direct detection of the quasar SZ signal. Our results show that for all the systems we get an enhancement of the SZ signal, when there is radiative feedback, while the signal gets suppressed when the jet mode of feedback is introduced in the simulations. Our mock ALMA maps reveal that, with the current prescription of jet feedback, the signal goes below the detection threshold of ALMA. We also find that the signal is higher for high redshift systems, making it possible for ALMA and cross SZ-X-ray studies to disentangle the varying modes of quasar feedback and their relative importance in the cosmological context.

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Section: Discussion Of Resultsmentioning

confidence: 99%

Cosmological Simulations of Galaxy Groups and Clusters. III. Constraining Quasar Feedback Models with the Atacama Large Millimeter Array

Chakraborty,

Chatterjee,

Lacy

et al. 2023

ApJ

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“…Absorption studies carried out with the Cosmic Origin Spectrograph on the Hubble Space Telescope have probed the cooler phases (10 4 K < T < 10 6 K) of the CGM (e.g., Tumlinson et al 2011;Xavier Prochaska et al 2011;Putman et al 2012;Werk et al 2014Werk et al , 2016Prochaska et al 2017). Stacking analyses of galaxies using Sunyaev-Zeldovich (SZ) measurements have indicated the presence of hot phases in the CGM (Wu et al 2020;Bregman et al 2022;Moser et al 2022;Das et al 2023). However, X-ray observations are best suited to mapping and exploring the physical characteristics of the hot phases of the CGM.…”

Section: Introductionmentioning

confidence: 99%

Mapping the Imprints of Stellar and Active Galactic Nucleus Feedback in the Circumgalactic Medium with X-Ray Microcalorimeters

Schellenberger,

Bogdán,

ZuHone

et al. 2024

ApJ

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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 R 500, and for larger galaxies even out to R 200, 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.

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X-ray signatures of galactic outflows into the circumgalactic medium

Jana,

Sarkar,

Stern

et al. 2024

Monthly Notices of the Royal Astronomical Society

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We present a set of controlled hydrodynamical simulations to study the effects of strong galactic outflows on the density and temperature structures, and associated X-ray signatures, of extra-planar and circumgalactic gas. We consider three initial state models, isothermal, isentropic, and rotating cooling-flow, for the hot circumgalactic medium (CGM) into which the outflows are driven. The energy sources are either stellar winds and supernovae, or active galactic nuclei. We consider energy injection rates in the range $10^{40} < \dot{E}_{\rm inj} <10^{44.5}$ erg s−1, and compute the time-dependent soft X-ray (0.5 − 2 keV) surface brightness. For $\dot{E}_{\rm inj} \gtrsim 10^{41} - 10^{42}$ erg s−1, with the exact threshold depending on the initial CGM state, the X-ray response is dominated by dense hot gas in the forward shock that eventually fades into the CGM as a sound wave. The shock surrounds an inner hot bubble leading to a radial flattening of the X-ray surface brightness. For lower energy injection rates, the X-ray surface brightness of the initial CGM state is almost unaffected. We present analytic approximations for the outflow shock propagation and the associated X-ray emissions.

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Detection of Thermal Sunyaev–Zel’dovich Effect in the Circumgalactic Medium of Low-mass Galaxies—A Surprising Pattern in Self-similarity and Baryon Sufficiency

Cited by 4 publications

References 83 publications

Cosmological Simulations of Galaxy Groups and Clusters. III. Constraining Quasar Feedback Models with the Atacama Large Millimeter Array

Cosmological Simulations of Galaxy Groups and Clusters. III. Constraining Quasar Feedback Models with the Atacama Large Millimeter Array

Mapping the Imprints of Stellar and Active Galactic Nucleus Feedback in the Circumgalactic Medium with X-Ray Microcalorimeters

X-ray signatures of galactic outflows into the circumgalactic medium

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