Relevant bibliographies by topics / Circum-galactic medium

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  2. Dissertations / Theses

Academic literature on the topic 'Circum-galactic medium'

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

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Journal articles on the topic "Circum-galactic medium"

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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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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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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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Dissertations / Theses on the topic "Circum-galactic medium"

1

Augustin, Ramona. "Characterising the circum-galactic medium : observations in absorption and simulations of emission." Thesis, Aix-Marseille, 2019. http://www.theses.fr/2019AIXM0254.

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Comprendre les processus de flux de gaz entrant et sortant des galaxies est crucial pour les études de l’évolution des galaxies. Cependant, l’observation du médium circum-galactique (CGM) faible et diffus, où se déroulent ces processus, reste difficile. Dans ce travail, j’explore différentes méthodes pour observer, simuler et caractériser le gaz autour des galaxies dans le CGM. J'ai identifié et caractérisé des homologues de galaxie aux systèmes lorentziens (DLA) à z équivalent 1 en utilisant des observations au télescope spatial de Hubble (HS) hautement résolues spatialement. Je détermine leu
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Quiret, Samuel. "Circum galactic medium emission : from modeling to detection by a dedicated UV space mission." Thesis, Aix-Marseille, 2016. http://www.theses.fr/2016AIXM4735/document.

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L’évolution des galaxies est un sujet relativement débattu en astronomie extra-galactique, étant donné que la plupart des mécanismes responsables des propriétés observées dans les galaxies (masse, taux de formation d’étoiles, contenu en métaux, moment angulaire) sont encore peu contraints et certains ne sont probablement même pas encore observés. Ma thèse porte sur une analyse de la région entourant les galaxies, connue sous le nom de Milieu Circum Galactique (MCG). Le MCG est à l’interface entreles galaxies et le Milieu Inter Galactique (MIG) et est considéré comme le lieu de prédilection pou
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Röttgers, Bernhard [Verfasser], and Simon D. M. [Akademischer Betreuer] White. "Simulated absorption lines in the circum-galactic medium / Bernhard Röttgers ; Betreuer: Simon D. M. White." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2017. http://d-nb.info/1137466766/34.

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Falkendal, Theresa Maria. "Constraining star formation rates and AGN feedback in high-z radio galaxies." Thesis, Sorbonne université, 2018. http://www.theses.fr/2018SORUS248.

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L’évolution des galaxies reste assez mal comprise. La densité de formation piquant entre 1<br>The evolution of galaxies is something that is still not well understood. The cosmic star formation rate density peaks between 1 &lt; z &lt; 3. It is therefore important to investigate the high-z Universe and the mechanisms which triggers or quenches star-formation in galaxies. In this thesis I investigate the effects of AGN feedback by studying high-z radio galaxies (HzRGs). For a sample of 25 HzRGs at 1 &lt; z &lt; 5.2, I add new ALMA data and determine the star formation rates (SFR) by multi-wavele
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Vijayan, Aditi. "Understanding Multi-Wavelength Signatures of Galactic Outflows Through 3-D Simulations." Thesis, 2020. https://etd.iisc.ac.in/handle/2005/4539.

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Evolution of galaxies is a phenomenon that affects the formation and composition of galaxies, and the intergalactic medium. It is mediated by processes that establish a symbiotic relationship between a galaxy and the surrounding circum-galactic medium (CGM) by enabling the exchange of mass, momentum, energy, and metals between the two. For star-forming galaxies, one side of the exchange is driven by galactic outflows (GOs) emerging from supernovae explosions (SNes). GOs posses a complex, multiphase structure which covers several orders in magnitudes of density and temperature. A complete
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