Voyage through the hidden physics of the cosmic web

Simionescu, A.; Ettori, S.; Werner, Norbert; Nagai, Daisuke; Vazza, Franco; Akamatsu, Hiroki; Pinto, C.; Plaa, J. de; Wijers, Nastasha; Nelson, Dylan; Pointecouteau, É.; Pratt, G. W.; Spiga, D.; Vacanti, Giuseppe; Lau, Erwin T.; Rossetti, M.; Gastaldello, F.; Biffi, V.; Bülbül, Esra; Collon, Maximilien J.; Herder, Jan-Willem den; Eckert, D.; Fraternali, Filippo; Mingo, B.; Pareschi, G.; Pezzulli, Gabriele; Reiprich, T. H.; Schaye, Joop; Walker, Stephen; Werk, Jessica K.

doi:10.1007/s10686-021-09720-0

Cited by 15 publications

(7 citation statements)

References 143 publications

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“…Numerical models predict that hot halos around galaxies are strongly affected by galactic winds driven by feedback (e.g., van de Voort et al 2016;Hafen et al 2019;Stern et al 2021b;Vĳayan & Li 2021). Observations with future X-ray telescopes may be able to measure the diffuse halo gas in 𝐿 * galaxies out to moderate redshifts (Kaastra et al 2013;Simionescu et al 2021) thus potentially providing a sensitive probe of the physics of feedback processes. We plan to study the formation and evolution of hot halos in FIREbox galaxies in future work.…”

Section: The Gas Content Of Milky Way Analogs -Where Are the "Missing...mentioning

confidence: 99%

FIREbox: Simulating galaxies at high dynamic range in a cosmological volume

Feldmann¹,

Quataert²,

Faucher-Giguère³

et al. 2022

Preprint

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We introduce a suite of cosmological volume simulations to study the evolution of galaxies at high numerical resolution as part of the Feedback in Realistic Environments project. FIREbox, the principal simulation of the present suite, provides a representative sample of galaxies (∼ 1000 galaxies with 𝑀 star > 10 8 𝑀 at 𝑧 = 0) at a resolution (Δ𝑥 ∼ 20 pc, 𝑚 b ∼ 6 × 10 4 𝑀 ) comparable to state-of-the-art galaxy zoom-in simulations. Furthermore, FIREbox captures the multiphase nature of the interstellar medium in a fully cosmological setting (𝐿 = 22.1 Mpc) thanks to its exceptionally high dynamic range ( 10 6 ) and the inclusion of multi-channel stellar feedback. Here, we focus on validating the predictions of FIREbox by comparing to observational data. We find that, at a given stellar mass (for 𝑀 star < 10 10.5−11 𝑀 ), simulated galaxies have star formation rates, atomic and molecular gas masses, gas phase and stellar metallicities in broad agreement with observations. In addition, FIREbox shows that these galaxy scaling relations extend to the low mass regime (𝑀 star ∼ 10 7 𝑀 ) and follow a (broken) power-law relationship. Also reproduced are the evolution of the cosmic H I density and the H I column density distribution at 𝑧 ∼ 0 − 5. At low 𝑧, FIREbox predicts a peak in the stellar-mass-halo-mass relation, but also a higher abundance of massive galaxies and a higher cosmic star formation rate density than observed, showing that stellar feedback alone is insufficient to reproduce the properties of massive galaxies at late times. Given its high resolution and sample size, FIREbox offers a baseline prediction of galaxy formation theory in a ΛCDM Universe while also highlighting modeling challenges to be addressed in next generation galaxy simulations.

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Section: The Gas Content Of Milky Way Analogs -Where Are the "Missing...mentioning

confidence: 99%

FIREbox: Simulating galaxies at high dynamic range in a cosmological volume

Feldmann¹,

Quataert²,

Faucher-Giguère³

et al. 2022

Preprint

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“…The X-ray corona of all the over massive spirals detected so far show a trend of declining temperature profile, and beyond virial radius most likely their gas temperature would be below < 10 6 K where EUV and FUV wavelengths provide the best diagnostics. These baryons may exist in a cold and low density phase which makes it very difficult to observe them with current X-ray telescopes, hence these are prime targets for future highly promising exploratory missions (Simionescu et al 2021;Bregman et al 2018;Nicastro et al 2021).…”

Section: 62mentioning

confidence: 99%

“…So, the small star formation rate indicates the presence of more abundance of metallic elements in its gaseous clouds which could have been thus enriched due to past supernova explosions in the disc which in turn may have blown out baryons in the halo of the galaxy. In future a sensitive spectroscopic measurement of metal abundance of the baryons in the circum galactic halos will be necessary to test this model (see Simionescu et al (2021); Nicastro et al (2021) and a review by Tumlinson et al (2017)).…”

Section: Baryons In Ugc 12591 and Super-spiralsmentioning

confidence: 99%

Hubble Space Telescope Captures UGC 12591: Bulge/Disk Properties, Star Formation and `Missing Baryons' Census in a Very Massive and Fast Spinning Hybrid Galaxy

Ray¹,

Dhiwar²,

Pandge³

et al. 2022

Preprint

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We present Hubble Space Telescope (HST) observations of the nearby (z= 0.023), very massive, highly rotating (488.4±12.5 km s −1 ) hybrid (S0-Sa) galaxy UGC 12591, along with observations taken at other wavelengths from UV to FIR. Deep HST data of the galaxy in V, I and H bands is used to disentangle its bulge and disk components. The surface brightness distributions show a dominance of the bulge component over the disk with H-band bulge-to-disc luminosity ratio ∼ 69%. From spectral energy distribution (SED) fitting, we find an extremely low global star formation rate (SFR) of ∼ 0.1 − 0.2M y −1 , which is unusually low for this galaxy's huge stellar mass (M ★ ∼ 1.6 × 10 11 M ), that implies a strong quenching of it's SFR. For at least past 10 8 years the galaxy has remained in the quiescent state as a sterile, 'red and dead' galaxy. The fraction of total infra-red dust luminosity contributed by the ISM dust is as high as ∼ 90%, with total dust luminosity L dust = (0.5 − 3.5) × 10 10 L , dominated by cold dust at equilibrium temperature T C ≈ 15K. UGC 12591 is found host to a super massive black hole (SMBH) of mass 6.18 × 10 8 M which at the present moment is quiescent, i.e., neither we see large (> 1kpc) radio jets nor is the black hole contributing significantly to the mid-IR SED, ruling out the presence of strong radiative feedback from a bright AGN. We have obtained a detailed census of all observable baryons in this galaxy. The star formation efficiency is very low (∼ 0.02 − 0.06) and within a virial radius the galaxy has a total observed baryonic mass of 6.87 × 10 11 M , amounting to a baryonic deficiency of ∼ 80% relative to the cosmological mean. A small fraction of these cosmic baryons reside in a warm/hot circum-galactic halo phase, while the majority of baryons are still not observable. We have discussed various astrophysical scenarios for explaining its unusual physical properties. Our work is a major step forward in understanding the assembly history of such extremely massive, isolated galaxies.

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“…The diffuse gas in the cosmic web, especially in the low redshift Universe (z ≤ 1), has not been imaged in X-ray, owing to the scarcity of detectable X-ray photons from the warm-hot intergalactic medium e.g., [72,73]. The exceptions are attempts involving massive galaxy clusters [74,75], or stacking techniques [76].…”

Section: The Magnetic Cosmic Web and Its Radio Observationsmentioning

confidence: 99%

Magnetogenesis and the Cosmic Web: A Joint Challenge for Radio Observations and Numerical Simulations

et al. 2021

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The detection of the radio signal from filaments in the cosmic web is crucial to distinguish possible magnetogenesis scenarios. We review the status of the different attempts to detect the cosmic web at radio wavelengths. This is put into the context of the advanced simulations of cosmic magnetism carried out in the last few years by our MAGCOW project. While first attempts of imaging the cosmic web with the MWA and LOFAR have been encouraging and could discard some magnetogenesis models, the complexity behind such observations makes a definitive answer still uncertain. A combination of total intensity and polarimetric data at low radio frequencies that the SKA and LOFAR2.0 will achieve is key to removing the existing uncertainties related to the contribution of many possible sources of signal along deep lines of sight. This will make it possible to isolate the contribution from filaments, and expose its deep physical connection with the origin of extragalactic magnetism.

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Voyage through the hidden physics of the cosmic web

Cited by 15 publications

References 143 publications

FIREbox: Simulating galaxies at high dynamic range in a cosmological volume

FIREbox: Simulating galaxies at high dynamic range in a cosmological volume

Hubble Space Telescope Captures UGC 12591: Bulge/Disk Properties, Star Formation and `Missing Baryons' Census in a Very Massive and Fast Spinning Hybrid Galaxy

Magnetogenesis and the Cosmic Web: A Joint Challenge for Radio Observations and Numerical Simulations

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