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Journal articles on the topic 'Circum-galactic medium'

Author: Grafiati
Published: 6 September 2023
Last updated: 31 July 2025

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1

Li, Jiang‐Tao. "An X‐ray view of the hot circum‐galactic medium." Astronomische Nachrichten 341, no. 2 (2020): 177–83. http://dx.doi.org/10.1002/asna.202023775.

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Augustin, Ramona, Céline Péroux, Palle Møller та ін. "Characterizing the circum-galactic medium of damped Lyman-α absorbing galaxies". Monthly Notices of the Royal Astronomical Society 478, № 3 (2018): 3120–32. http://dx.doi.org/10.1093/mnras/sty1287.

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3

Arrigoni Battaia, Fabrizio, Joseph F. Hennawi, Sebastiano Cantalupo та J. Xavier Prochaska. "THE STACKED LYαEMISSION PROFILE FROM THE CIRCUM-GALACTIC MEDIUM OFz∼ 2 QUASARS". Astrophysical Journal 829, № 1 (2016): 3. http://dx.doi.org/10.3847/0004-637x/829/1/3.

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Hirashita, Hiroyuki, and Ting-Wen Lan. "Shattering as a source of small grains in the circum-galactic medium." Monthly Notices of the Royal Astronomical Society 505, no. 2 (2021): 1794–805. http://dx.doi.org/10.1093/mnras/stab1416.

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ABSTRACT Observed reddening in the circum-galactic medium (CGM) indicates a significant abundance of small grains, of which the origin is still to be clarified. We examine a possible path of small-grain production through shattering of pre-existing large grains in the CGM. Possible sites where shattering occurs on a reasonable time-scale are cool clumps with hydrogen number density nH ∼ 0.1 cm−3 and gas temperature Tgas ∼ 104 K, which are shown to exist through observations of Mg ii absorbers. We calculate the evolution of grain size distribution in physical conditions appropriate for cool clu
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5

Zhou, Zi-Hang, Jin-Ping Zhu, and Kai Wang. "High-energy Neutrino Production from AGN Disk Transients Impacted by the Circum-disk Medium." Astrophysical Journal 951, no. 1 (2023): 74. http://dx.doi.org/10.3847/1538-4357/acd380.

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Abstract Various supernovae, compact object coalescences, and tidal disruption events are widely believed to occur embedded in active galactic nucleus (AGN) accretion disks and generate detectable electromagnetic signals. We collectively refer to them as AGN disk transients. The inelastic hadronuclear (pp) interactions between shock-accelerated cosmic rays and AGN disk materials shortly after the ejecta shock breaks out of the disk can produce high-energy neutrinos. However, the expected efficiency of neutrino production would decay rapidly by adopting a pure Gaussian density atmosphere profil
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Richards, Carl, and Michael D. Smith. "Simulations of pulsed overpressure jets: formation of bellows and ripples in galactic environments." Monthly Notices of the Royal Astronomical Society 532, no. 2 (2024): 1929–47. http://dx.doi.org/10.1093/mnras/stae1498.

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ABSTRACT Jets from active nuclei may supply the heating which moderates cooling and accretion from the circum-galactic medium. While steady overpressured jets can drive a circulatory flow, lateral energy transfer rarely exceeds 3 per cent of jet power, after the initial bow shock has advanced. Here, we explore if pulses in high-pressure jets are capable of sufficient lateral energy transfer into the surrounding environment. We answer this by performing a systematic survey of numerical simulations in an axisymmetric hydrodynamic mode. Velocity pulses along low Mach jets are studied at various o
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Hani, Maan H., Martin Sparre, Sara L. Ellison, Paul Torrey, and Mark Vogelsberger. "Galaxy mergers moulding the circum-galactic medium – I. The impact of a major merger." Monthly Notices of the Royal Astronomical Society 475, no. 1 (2017): 1160–76. http://dx.doi.org/10.1093/mnras/stx3252.

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Olsen, Karen, Andrea Pallottini, Aida Wofford, et al. "Challenges and Techniques for Simulating Line Emission." Galaxies 6, no. 4 (2018): 100. http://dx.doi.org/10.3390/galaxies6040100.

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Modeling emission lines from the millimeter to the UV and producing synthetic spectra is crucial for a good understanding of observations, yet it is an art filled with hazards. This is the proceedings of “Walking the Line”, a 3-day conference held in 2018 that brought together scientists working on different aspects of emission line simulations, in order to share knowledge and discuss the methodology. Emission lines across the spectrum from the millimeter to the UV were discussed, with most of the focus on the interstellar medium, but also some topics on the circumgalactic medium. The most imp
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Wendt, Martin, Nicolas F. Bouché, Johannes Zabl, Ilane Schroetter, and Sowgat Muzahid. "MusE GAs FLOw and Wind V. The dust/metallicity-anisotropy of the circum-galactic medium." Monthly Notices of the Royal Astronomical Society 502, no. 3 (2021): 3733–45. http://dx.doi.org/10.1093/mnras/stab049.

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ABSTRACT We investigate whether the dust content of the circum-galactic medium (CGM) depends on the location of the quasar sightline with respect to the galaxy major-axis using 13 galaxy-Mg ii absorber pairs (9–81 kpc distance) from the MusE GAs FLOw and Wind (MEGAFLOW) survey at 0.4 < z < 1.4. The dust content of the CGM is obtained from [Zn/Fe] using ultraviolet and visual echelle spectrograph data. When a direct measurement of [Zn/Fe] is unavailable, we estimate the dust depletion from a method that consists in solving for the depletion from multiple singly ionized ions (e.g.
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Momose, Rieko, Tomotsugu Goto, Yousuke Utsumi та ін. "Possible evolution of the circum-galactic medium around QSOs with QSO age and cosmic time revealed by Ly α haloes". Monthly Notices of the Royal Astronomical Society 488, № 1 (2019): 120–34. http://dx.doi.org/10.1093/mnras/stz1707.

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ABSTRACT We first present new Subaru narrow-band observations of the Ly α halo around the quasi-stellar object (QSO) CFHQ J232908−030158 at z = 6.42, which appears the most luminous and extended halo at z > 5 (LLy α = 9.8 × 1043 erg s−1 within 37 pkpc diameter). Then, combining these measurements with available data in the literature, we find two different evolutions of QSOs’ Ly α haloes. First is a possible short-term evolution with QSO age seen in four z > 6 QSOs. We find the anticorrelation between the Ly α halo scales with QSOs’ infrared (IR) luminosity, with J2329−0301’s halo being
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Sravan, Niharika, Claude-André Faucher-Giguère, Freeke van de Voort, et al. "Strongly time-variable ultraviolet metal-line emission from the circum-galactic medium of high-redshift galaxies." Monthly Notices of the Royal Astronomical Society 463, no. 1 (2016): 120–33. http://dx.doi.org/10.1093/mnras/stw1962.

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12

Leclercq, Floriane, Roland Bacon, Anne Verhamme, et al. "The MUSE Hubble Ultra Deep Field Survey." Astronomy & Astrophysics 635 (March 2020): A82. http://dx.doi.org/10.1051/0004-6361/201937339.

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We present spatially resolved maps of six individually-detected Lyman α haloes (LAHs) as well as a first statistical analysis of the Lyman α (Lyα) spectral signature in the circum-galactic medium of high-redshift star-forming galaxies (−17.5 > MUV > −21.5) using the Multi-Unit Spectroscopic Explorer. Our resolved spectroscopic analysis of the LAHs reveals significant intrahalo variations of the Lyα line profile. Using a three-dimensional two-component model for the Lyα emission, we measured the full width at half maximum (FWHM), the peak velocity shift, and the asymmetry of the Lyα line
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13

Li, Jiang-Tao, Joel N. Bregman, Q. Daniel Wang, Robert A. Crain, and Michael E. Anderson. "THE CIRCUM-GALACTIC MEDIUM OF MASSIVE SPIRALS. I. AN OVERVIEW AND A CASE STUDY OF NGC 5908." Astrophysical Journal 830, no. 2 (2016): 134. http://dx.doi.org/10.3847/0004-637x/830/2/134.

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14

Gutcke, Thales A., Greg S. Stinson, Andrea V. Macciò, Liang Wang, and Aaron A. Dutton. "NIHAO – VIII. Circum-galactic medium and outflows – The puzzles of H i and O vi gas distributions." Monthly Notices of the Royal Astronomical Society 464, no. 3 (2016): 2796–815. http://dx.doi.org/10.1093/mnras/stw2539.

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15

Liu, W., L. Ji, H. Y. Qiu, et al. "Research on a back-illuminated CMOS sensor for LUV imaging." Journal of Instrumentation 17, no. 08 (2022): T08004. http://dx.doi.org/10.1088/1748-0221/17/08/t08004.

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Abstract The Lyman UV (LUV) band possesses several unique characteristics that make it useful to study the properties of the interstellar medium and the circum-galactic medium (CGM) surrounding nearby galaxies. MCP detectors are sensitive in the LUV band and can be used as imagers and photon counters in space missions. Instead of MCP, this paper describes a new CMOS imaging system that can be applied to astronomical observations in the LUV band. We adopted a special back-side illuminated CMOS as the image sensor. Using it, we developed a LUV imaging system based on FPGA technology. With the as
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16

D’Odorico, V., K. Finlator, S. Cristiani, et al. "The evolution of the Si iv content in the Universe from the epoch of reionization to cosmic noon." Monthly Notices of the Royal Astronomical Society 512, no. 2 (2022): 2389–401. http://dx.doi.org/10.1093/mnras/stac545.

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ABSTRACT We investigate the abundance and distribution of metals in the high-redshift intergalactic medium and circum-galactic medium through the analysis of a sample of almost 600 Si iv absorption lines detected in high- and intermediate-resolution spectra of 147 quasars. The evolution of the number density of Si iv lines, the column density distribution function, and the cosmic mass density are studied in the redshift interval 1.7 ≲ z ≲ 6.2 and for log N(Si iv) ≥ 12.5. All quantities show a rapid increase between z ∼ 6 and z ≲ 5 and then an almost constant behaviour to z ∼ 2 in very good agr
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17

Heckman, Timothy, Sanchayeeta Borthakur, Vivienne Wild, David Schiminovich, and Rongmon Bordoloi. "COS-burst: Observations of the Impact of Starburst-driven Winds on the Properties of the Circum-galactic Medium." Astrophysical Journal 846, no. 2 (2017): 151. http://dx.doi.org/10.3847/1538-4357/aa80dc.

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18

Steinwandel, Ulrich P., Klaus Dolag, Harald Lesch, Benjamin P. Moster, Andreas Burkert, and Almudena Prieto. "On the origin of magnetic driven winds and the structure of the galactic dynamo in isolated galaxies." Monthly Notices of the Royal Astronomical Society 494, no. 3 (2020): 4393–412. http://dx.doi.org/10.1093/mnras/staa817.

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ABSTRACT We investigate the build-up of the galactic dynamo and subsequently the origin of a magnetic driven outflow. We use a set-up of an isolated disc galaxy with a realistic circum-galactic medium (CGM). We find good agreement of the galactic dynamo with theoretical and observational predictions from the radial and toroidal components of the magnetic field as function of radius and disc scale height. We find several field reversals indicating dipole structure at early times and quadrupole structure at late times. Together with the magnetic pitch angle and the dynamo control parameters Rα,
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19

Leclercq, Floriane, Roland Bacon, Lutz Wisotzki, et al. "The MUSE Hubble Ultra Deep Field Survey." Astronomy & Astrophysics 608 (November 29, 2017): A8. http://dx.doi.org/10.1051/0004-6361/201731480.

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We report the detection of extended Lyα haloes around 145 individual star-forming galaxies at redshifts 3 ≤ z ≤ 6 in the Hubble Ultra Deep Field observed with the Multi-Unit Spectroscopic Explorer (MUSE) at ESO-VLT. Our sample consists of continuum-faint (− 15 ≥ MUV ≥ −22) Lyα emitters (LAEs). Using a 2D, two-component (continuum-like and halo) decomposition of Lyα emission assuming circular exponential distributions, we measure scale lengths and luminosities of Lyα haloes. We find that 80% of our objects having reliable Lyα halo measurements show Lyα emission that is significantly more extend
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20

Emonts, Bjorn. "Jet-CO alignments in the environments high-z radio galaxies." Proceedings of the International Astronomical Union 11, S321 (2016): 348–50. http://dx.doi.org/10.1017/s1743921316011613.

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AbstractIn the outskirts of massive high-redshift radio galaxies, powerful radio-jets often interact with ambient warm Lyα-emitting gas. We present the discovery of luminous reservoirs of cold molecular gas in these environments, based on CO(1-0) observations with the Australia Telescope Compact Array. The CO-emission is aligned with the radio jets, and found tens of kpc outside the host galaxy. These molecular gas reservoirs have CO luminosities in the range of those found in submm-galaxies (L'CO ~ 4-9 × 1010 K km/s pc2), but they lack any near-infrared counterpart in deep Spitzer imaging. Th
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21

Li, Jiang-Tao, Joel N. Bregman, Q. Daniel Wang, Robert A. Crain, and Michael E. Anderson. "Erratum: “The Circum-galactic Medium of Massive Spirals. I. An Overview and a Case Study of NGC 5908” (2016, ApJ, 830, 134)." Astrophysical Journal 902, no. 1 (2020): 87. http://dx.doi.org/10.3847/1538-4357/abbacf.

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22

Li, Jiang-Tao, Joel N. Bregman, Q. Daniel Wang, Robert A. Crain, Michael E. Anderson, and Shangjia Zhang. "The Circum-Galactic Medium of Massive Spirals. II. Probing the Nature of Hot Gaseous Halo around the Most Massive Isolated Spiral Galaxies." Astrophysical Journal Supplement Series 233, no. 2 (2017): 20. http://dx.doi.org/10.3847/1538-4365/aa96fc.

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23

Sarrato-Alós, J., C. Brook, and A. Di Cintio. "Constraining gas metal mixing strength in simulations using observations of the Milky Way’s disc." Monthly Notices of the Royal Astronomical Society 525, no. 1 (2023): 279–85. http://dx.doi.org/10.1093/mnras/stad2365.

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ABSTRACT This work explores the mixing rate of metals in the interstellar medium (ISM), comparing observational constraints from our solar neighbourhood to high resolution cosmological hydrodynamical simulations of Milky Way (MW)-like galaxies. The mixing rate, described by the coefficient C, is varied in simulations between 0 and 0.05, with resultant simulated galaxies compared to observations of metallicity dispersion in young star clusters, H ii regions and neutral gas in the disc of the MW. A value of C between 0.003125 and 0.0125 is found to self-consistently match a range of observables,
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24

Wang, Ailing, Tao An, Sumit Jaiswal, et al. "The obstructed jet in Mrk 231." Monthly Notices of the Royal Astronomical Society 504, no. 3 (2021): 3823–30. http://dx.doi.org/10.1093/mnras/stab587.

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ABSTRACT Mrk 231 is the closest radio-quiet quasar known and one of the most luminous infrared galaxies in the local Universe. It is characterized by the co-existence of a radio jet and powerful multiphase multiscale outflows, making it an ideal laboratory to study active galactic nucleus (AGN) feedback. We analyse the multi-epoch very long baseline interferometry data of Mrk 231 and estimate the jet head advance speed to be ≲0.013 c, suggesting a sub-relativistic jet flow. The jet position angle changes from −113○ in the inner parsec to −172○ at a projected distance of 25 pc. The jet structur
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Falocco, S., J. Larsson, and S. Nandi. "Accretion and jets in a low-luminosity AGN: the nucleus of NGC 1052." Astronomy & Astrophysics 638 (June 2020): A67. http://dx.doi.org/10.1051/0004-6361/202037516.

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Aims. We aim to determine the properties of the central region of NGC 1052 using X-ray and radio data. NGC 1052 (z = 0.005) has been investigated for decades in different energy bands and shows radio lobes and a low-luminosity active galactic nucleus. Methods. We used X-ray images from Chandra and radio images from Very Large Array to explore the morphology of the central area. We also studied the spectra of the nucleus and the surrounding region using observations from Chandra and XMM-Newton. Results. We find diffuse soft X-ray radiation and hot-spots along the radio lobes. The spectrum of th
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Wright, Ruby J., Claudia del P. Lagos, Chris Power, and Camila A. Correa. "Revealing the physical properties of gas accreting to haloes in the EAGLE simulations." Monthly Notices of the Royal Astronomical Society 504, no. 4 (2021): 5702–25. http://dx.doi.org/10.1093/mnras/stab1057.

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ABSTRACT The inflow of cosmological gas on to haloes, while challenging to directly observe and quantify, plays a fundamental role in the baryon cycle of galaxies. Using the eagle suite of hydrodynamical simulations, we present a thorough exploration of the physical properties of gas accreting on to haloes – namely, its spatial characteristics, density, temperature, and metallicity. Classifying accretion as ‘hot’ or ‘ cold’ based on a temperature cut-off 105.5 K, we find that the covering fraction (fcov) of cold-mode accreting gas is significantly lower than the hot-mode, with z = 0 fcov value
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27

Travascio, A., L. Zappacosta, S. Cantalupo, et al. "The WISSH quasars project." Astronomy & Astrophysics 635 (March 2020): A157. http://dx.doi.org/10.1051/0004-6361/201936197.

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Context. In recent years, Lyα nebulae have been routinely detected around high redshift, radio-quiet quasars thanks to the advent of the highly sensitive integral field spectrographs. Constraining the physical properties of the Lyα nebulae is crucial for a full understanding of the circum-galactic medium (CGM). The CGM acts both as a repository for intergalactic and galactic baryons as well as a venue of feeding and feedback processes. The most luminous quasars are privileged test-beds to study these processes, given their large ionising fluxes and dense CGM environments in which they are expe
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28

Lesaffre, Pierre, Edith Falgarone, and Pierre Hily-Blant. "The Intermittency of Turbulence in Magneto-Hydodynamical Simulations and in the Cosmos." Atmosphere 15, no. 2 (2024): 211. http://dx.doi.org/10.3390/atmos15020211.

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Turbulent dissipation is a central issue in the star and galaxy formation process. Its fundamental property of space–time intermittency, well characterised in incompressible laboratory experiments, remains elusive in cosmic turbulence. Progress requires the combination of state-of-the-art modelling, numerical simulations and observations. The power of such a combination is illustrated here, where the statistical method intended to locate the extrema of velocity shears in a turbulent field, which are the signposts of intense dissipation extrema, is applied to numerical simulations of compressib
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29

Luminari, A., F. Tombesi, E. Piconcelli, et al. "The importance of special relativistic effects in modelling ultra-fast outflows." Astronomy & Astrophysics 633 (January 2020): A55. http://dx.doi.org/10.1051/0004-6361/201936797.

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Context. Outflows are observed in a variety of astrophysical sources. Remarkably, ultra-fast (v ≥ 0.1c), highly ionised outflows in the UV and X-ray bands are often seen in active galactic nuclei (AGNs). Depending on their kinetic power and mass outflow rate, Ėout and Ṁout, respectively, these outflows may play a key role in regulating the AGN–host galaxy co-evolution process through cosmic time and metal-feeding the surrounding circum-/inter-galactic medium. It is therefore crucial to provide accurate estimates of the wind properties, including Ṁout and Ėout. Aims. Here we concentrate on spec
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Otsuki, Mau, and Hiroyuki Hirashita. "Dust enrichment in the circum-galactic medium." Monthly Notices of the Royal Astronomical Society, February 2, 2024. http://dx.doi.org/10.1093/mnras/stae342.

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Abstract To understand the origin of dust in the circum-galactic medium (CGM), we develop a dust enrichment model. We describe each of the central galaxy and its CGM as a single zone, and consider the mass exchange between them through galactic inflows and outflows. We calculate the evolution of the gas, metal, and dust masses in the galaxy and the CGM. In the galaxy, we include stellar dust production and interstellar dust processing following our previous models. The dust in the galaxy is transported to the CGM via galactic outflows, and it is further processed by dust destruction (sputterin
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31

Ottolina, Riccardo, Renato Falomo, Aldo Treves, et al. "Circum-Galactic Medium in the Halo of Quasars." Frontiers in Astronomy and Space Sciences 4 (December 21, 2017). http://dx.doi.org/10.3389/fspas.2017.00061.

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32

Sandrinelli, A., R. Falomo, A. Treves, S. Paiano, and R. Scarpa. "The circum-galactic medium of quasars: transverse and line-of-sight absorptions." Astrophysics and Space Science 365, no. 11 (2020). http://dx.doi.org/10.1007/s10509-020-03889-0.

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AbstractQuasar projected pairs (QPPs) can be used for investigating the circumgalactic medium of quasars through the study of intervening absorption lines in the spectrum of the background quasar (QSOB) that are at the same redshift of the foreground quasar (QSOF). Here we report on optical spectroscopy, gathered at Gran Telescopio Canarias, of 14 QPPs. In 7 cases we find MgII absorption lines associated with the foreground quasar. Only for two cases line-of-sight absorptions (LOS) are revealed. These new observations complement our previous study performed on other 30 QPPs. A brief discussion
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Gluck, Naomi, Benjamin D. Oppenheimer, Daisuke Nagai, Francisco Villaescusa-Navarro, and Daniel Anglés-Alcázar. "An Observationally Driven Multifield Approach for Probing the Circum-Galactic Medium with Convolutional Neural Networks." Monthly Notices of the Royal Astronomical Society, December 7, 2023. http://dx.doi.org/10.1093/mnras/stad3784.

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Abstract The circum-galactic medium (CGM) can feasibly be mapped by multiwavelength surveys covering broad swaths of the sky. With multiple large datasets becoming available in the near future, we develop a likelihood-free Deep Learning technique using convolutional neural networks (CNNs) to infer broad-scale physical properties of a galaxy’s CGM and its halo mass for the first time. Using CAMELS (Cosmology and Astrophysics with MachinE Learning Simulations) data, including IllustrisTNG, SIMBA, and Astrid models, we train CNNs on Soft X-ray and 21-cm (HI) radio 2D maps to trace hot and cool ga
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Romano, Michael. "Circumgalactic Enrichment in Local Dwarf Galaxies as Probed by Star-Formation Driven Outflows." Communications in Physics 33, no. 4 (2023). http://dx.doi.org/10.15625/0868-3166/17728.

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Galactic feedback driven by massive stars and active galactic nuclei plays a fundamen-tal role in regulating galaxy formation and evolution. In particular, intense starburst episodes can generate strong outflows able to suppress star formation by expelling large amount of dust and metals out of the galaxies, possibly enriching their circum (or even inter) galactic media. Local dwarf galaxies are particularly sensitive to feedback processes and offer a unique opportunity to study these phenomena in great details. We search for outflow signatures in a sample of ∼ 30 lo-cal dwarf galaxies drawn
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Mongardi, C., M. Viel, V. D’Odorico, et al. "Absorption systems at z ∼ 2 as a probe of the circum galactic medium: a probabilistic approach." Monthly Notices of the Royal Astronomical Society, May 18, 2018. http://dx.doi.org/10.1093/mnras/sty1283.

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36

Hopkins, Philip F., Iryna S. Butsky, Suoqing Ji, and Dušan Kereš. "A simple sub-grid model for cosmic ray effects on galactic scales." Monthly Notices of the Royal Astronomical Society, April 4, 2023. http://dx.doi.org/10.1093/mnras/stad976.

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Abstract Many recent numerical studies have argued that cosmic rays (CRs) from supernovae (SNe) or active galactic nuclei (AGN) could play a crucial role in galaxy formation, in particular by establishing a CR-pressure dominated circum-galactic medium (CGM). But explicit CR-magneto-hydrodynamics (CR-MHD) remains computationally expensive, and it is not clear whether those results can be applied to simulations that do not explicitly treat magnetic fields or resolved ISM phase structure. We therefore present an intentionally extremely-simplified ‘sub-grid’ model for CRs, which attempts to captur
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Chen, Yaoxin, Yingzhong Xu, and Xi Kang. "Constraining galactic baryon cycle using the galaxy Stellar-to-Halo Mass Relations." Monthly Notices of the Royal Astronomical Society, December 12, 2022. http://dx.doi.org/10.1093/mnras/stac3628.

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Abstract Galaxies display several well-behaved scaling relations between their properties, such as the star formation rate-stellar mass relation (the main sequence) and the stellar mass-halo mass relation (SHMR). In principle, these scaling relations could imply different star formation histories (SFHs) of galaxies and different constraints on galaxy formation physics. In this paper, we derive the SFHs of galaxies by assuming that they always follow the SHMRs at different redshifts and use an empirical model to constrain key processes in their baryon cycle. It is found that, besides cold accre
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Hopkins, Philip F., Iryna S. Butsky, Georgia V. Panopoulou, et al. "First predicted cosmic ray spectra, primary-to-secondary ratios, and ionization rates from MHD galaxy formation simulations." Monthly Notices of the Royal Astronomical Society, July 1, 2022. http://dx.doi.org/10.1093/mnras/stac1791.

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Abstract We present the first simulations evolving resolved spectra of cosmic rays (CRs) from MeV-TeV energies (including electrons, positrons, (anti)protons, and heavier nuclei), in live kinetic-MHD galaxy simulations with star formation and feedback. We utilize new numerical methods including terms often neglected in historical models, comparing Milky Way analogues with phenomenological scattering coefficients ν to Solar-neighborhood (LISM) observations (spectra, B/C, e+/e−, $\bar{p}/p$, 10Be/9Be, ionization, γ-rays). We show it is possible to reproduce observations with simple single-power-
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Hopkins, Philip F., T. K. Chan, Suoqing Ji, et al. "Cosmic-Ray Driven Outflows to Mpc Scales from L* Galaxies." Monthly Notices of the Royal Astronomical Society, November 28, 2020. http://dx.doi.org/10.1093/mnras/staa3690.

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Abstract We study the effects of cosmic rays (CRs) on outflows from star-forming galaxies in the circum and inter-galactic medium (CGM/IGM), in high-resolution, fully-cosmological FIRE-2 simulations (accounting for mechanical and radiative stellar feedback, magnetic fields, anisotropic conduction/viscosity/CR diffusion and streaming, and CR losses). We showed previously that massive (Mhalo ≳ 1011 M⊙), low-redshift (z ≲ 1 − 2) halos can have CR pressure dominate over thermal CGM pressure and balance gravity, giving rise to a cooler CGM with an equilibrium density profile. This dramatically alte
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Wang, Sen, Dandan Xu, Shengdong Lu, and Cheng Li. "Kinematical coherence between satellite galaxies and host stellar discs for MaNGA & SAMI galaxies." Monthly Notices of the Royal Astronomical Society, November 27, 2023. http://dx.doi.org/10.1093/mnras/stad3634.

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Abstract The effect of angular momentum on galaxy formation and evolution has been studied for several decades. Our recent two papers using IllustrisTNG-100 simulation have revealed the acquisition path of the angular momentum from large-scale environment (satellites within hundreds of kpc) through the circum-galactic medium (CGM) to the stellar discs, putting forward the co-rotation scenario across the three distance scales. In real observations, although the rotation signature for the CGM and environmental three-dimensional (3d) angular momentum are difficult to obtain, line-of-sight kinemat
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41

Liu, Yao, Ming Zhu, Haiyang Yu, et al. "FAST discovery of long tidal tails in NGC 4490/85." Monthly Notices of the Royal Astronomical Society, April 28, 2023. http://dx.doi.org/10.1093/mnras/stad1281.

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Abstract We report the discovery of a 100 kpc H i tail in the merging galaxy pair NGC 4490/85 detected by the Five-Hundred-meter Aperture Spherical radio Telescope (FAST). The tidal tails extended in both the south and north directions, and they are much longer than that reported previously based on the VLA interferometric maps. The NGC 4490/85 is surrounded by a large gas envelope, and a starburst low metallicity dwarf galaxy MAPS 1231+42 is found to be connected with the gas envelope, indicating that galaxy interaction trigged the intense star formation in it. Based on the fact that the meta
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Cadiou, Corentin, Yohan Dubois, and Christophe Pichon. "Gravitational torques dominate the dynamics of accreted gas at z > 2." Monthly Notices of the Royal Astronomical Society, June 17, 2022. http://dx.doi.org/10.1093/mnras/stac1663.

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Abstract Galaxies form from the accretion of cosmological infall of gas. In the high redshift Universe, most of this gas infall is expected to be dominated by cold filamentary flows which connect deep down inside haloes, and, hence, to the vicinity of galaxies. Such cold flows are important since they dominate the mass and angular momentum acquisition that can make up rotationally-supported disks at high-redshifts. We study the angular momentum acquisition of gas into galaxies, and in particular, the torques acting on the accretion flows, using hydrodynamical cosmological simulations of high-r
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Bouche, Nicolas, Martin Wendt, Johannes Zabl, et al. "MusE GAs FLOw and Wind (MEGAFLOW). XII. Rationale and design of a survey of the cool circum-galactic medium with MUSE and UVES: The MEGAFLOW Survey." Astronomy & Astrophysics, January 3, 2025. https://doi.org/10.1051/0004-6361/202451093.

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We present the design, rationale, properties, and catalogues of the MusE Gas FLOw and Wind survey (MEGAFLOW) of cool gaseous halos of z≃1.0 galaxies, using low-ionisation absorption systems. The survey consists of 22 quasar fields selected from the Sloan Digital Sky Survey (SDSS), including multiple (≥3) strong absorption lines over the redshift range of $0.3<z<1.5$. Each quasar was observed with the Multi-Unit Spectroscopic Explorer (MUSE) and the Ultraviolet and Visual Echelle Spectrograph (UVES), for a total of 85 hours and 63 hours, respectively. The UVES data resulted in 127 absorpt
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Zhang, Yi, Johan Comparat, Gabriele Ponti, et al. "The hot circumgalactic medium in the eROSITA All-Sky Survey II. Scaling relations between X-ray luminosity and galaxies' mass." Astronomy & Astrophysics, July 23, 2024. http://dx.doi.org/10.1051/0004-6361/202449413.

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Understanding how the properties of galaxies relate to the properties of the hot circum-galactic medium (CGM) around them can constrain galaxy evolution models. We aim to measure the scaling relations between the X-ray luminosity of the hot CGM and the fundamental properties (stellar mass and halo mass) of a galaxy. We measured the X-ray luminosity of the hot CGM based on the surface brightness profiles of central galaxy samples measured from Spectrum Roentgen Gamma (SRG)/eROSITA all-sky survey data. We related the X-ray luminosity to the galaxies' stellar and halo mass, and we compared the ob
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Scholtz, J., R. Maiolino, G. C. Jones, and S. Carniani. "Evidence of extended cold molecular gas and dust halos around z ∼ 2.3 Extremely Red Quasars with ALMA." Monthly Notices of the Royal Astronomical Society, January 2, 2023. http://dx.doi.org/10.1093/mnras/stac3787.

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Abstract Large-scale outflows are believed to be an important mechanism in the evolution of galaxies. We can determine the impact of these outflows by studying either current galaxy outflows and their effect in the galaxy or by studying the effect of past outflows on the gas surrounding the galaxy. In this work, we examine the CO(7-6), [C i] ($^{3} \rm P_{1} \rightarrow {\rm ^3 P}_{0}$), H2O 211–202 and dust continuum emission of 15 extremely red quasars (ERQs) at z∼2.3 using ALMA. By investigating the radial surface brightness profiles of both the individual sources and the stacked emission,
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