Results 21 to 30 of about 5,245 (177)
The low-redshift circumgalactic medium in
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT We examine the properties of the low-redshift circumgalactic medium (CGM) around star-forming and quenched galaxies in the simba cosmological hydrodynamic simulations, focusing on comparing H i and metal line absorption to observations from the Cosmic Origins Spectrograph (COS)-Halos and COS-Dwarfs surveys. Halo baryon fractions
Sarah Appleby +4 more
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Properties of the simulated circumgalactic medium [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT The circumgalactic medium (CGM) is closely linked to galaxy formation and evolution, but difficult to characterize observationally and typically poorly resolved in cosmological simulations. We use spherically symmetric, idealized, high-resolution simulations of the CGM in $10^{12}$ and $10^{11}\, \mathrm{M}_\odot$ dark matter ...
Cassandra Lochhaas +4 more
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HUBS: a dedicated hot circumgalactic medium explorer [PDF]
Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray, 2020 The Hot Universe Baryon Surveyor (HUBS) mission is proposed to study "missing" baryons in the universe. Unlike dark matter, baryonic matter is made of elements in the periodic table, and can be directly observed through the electromagnetic signals that it produces.
Wei Cui +78 more
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Magnetizing the circumgalactic medium of disc galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT The circumgalactic medium (CGM) is one of the frontiers of galaxy formation and intimately connected to the galaxy via accretion of gas on to the galaxy and gaseous outflows from the galaxy. Here, we analyse the magnetic field in the CGM of the Milky Way-like galaxies simulated as part of the auriga project that constitutes a ...
Rüdiger Pakmor +9 more
openaire +5 more sources
Project AMIGA: The Circumgalactic Medium of Andromeda* [PDF]
The Astrophysical Journal, 2020 Abstract Project AMIGA (Absorption Maps In the Gas of Andromeda) is a survey of the circumgalactic medium (CGM) of Andromeda (M31, ≃ 300 kpc) along 43 QSO sightlines at impact parameters 25 ≤ R ≤ 569 kpc (25 at R ≲
Nicolas Lehner +24 more
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Enriching the hot circumgalactic medium [PDF]
Monthly Notices of the Royal Astronomical Society, 2013 Models of galaxy formation in a CDM universe predict that massive galaxies are surrounded by a hot, quasi-hydrostatic circumgalactic corona of slowly cooling gas, predominantly accreted from the IGM. This prediction is borne out by the cosmological hydrodynamical simulations of Crain et al., which reproduce scaling relations between the X-ray and ...
Crain, R.A. +4 more
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Absorption-based circumgalactic medium line emission estimates
Monthly Notices of the Royal Astronomical Society, 2022 ABSTRACT Motivated by integral field units (IFUs) on large ground telescopes and proposals for ultraviolet-sensitive space telescopes to probe circumgalactic medium (CGM) emission, we survey the most promising emission lines and how such observations can inform our understanding of the CGM and its relation to galaxy formation. We tie our
Daniel R Piacitelli +3 more
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Turbulence in the intragroup and circumgalactic medium [PDF]
Astronomy & Astrophysics, 2021 Context. In massive objects, such as galaxy clusters, the turbulent velocity dispersion, σturb, is tightly correlated to both the object mass, M, and the thermal energy. Aims. Here, we investigate whether these scaling laws extend to lower-mass objects in dark-matter filaments. Methods.
Schmidt, W., Schmidt, J. P., Grete, P.
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Efficiency of thermal conduction in a magnetized circumgalactic medium [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT The large temperature difference between cold gas clouds around galaxies and the hot haloes that they are moving through suggests that thermal conduction could play an important role in the circumgalactic medium. However, thermal conduction in the presence of a magnetic field is highly anisotropic, being strongly suppressed in ...
Richard Kooij +2 more
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Escape of cosmic rays from the Galaxy and effects on the circumgalactic medium [PDF]
, 2019 The escape of cosmic rays from the Galaxy is expected to shape their spectrum inside the Galaxy. Yet, this phenomenon is very poorly understood and, in the absence of a physical description, it is usually modelled as free escape from a given boundary ...
Amato, E., Blasi, P.
core +2 more sources