Results 21 to 30 of about 437 (157)
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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THE IMPACT OF STARBURSTS ON THE CIRCUMGALACTIC MEDIUM [PDF]
The Astrophysical Journal, 2013 We present a study exploring the impact of a starburst on the properties of the surrounding circum-galactic medium (CGM): gas located beyond the galaxy's stellar body and extending out to the virial radius (200 kpc). We obtained ultraviolet spectroscopic data from the Cosmic Origin Spectrograph (COS) probing the CGM of 20 low-redshift foreground ...
Borthakur +5 more
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DIISC-III. Signatures of Stellar Disk Growth in Nearby Galaxies
The Astrophysical Journal, 2023 We explore the growth of the stellar disks in 14 nearby spiral galaxies as part of the Deciphering the Interplay between the Interstellar medium, Stars, and the Circumgalactic medium (DIISC) survey.
Mansi Padave +10 more
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THE INFLUENCE OF ENVIRONMENT ON THE CIRCUMGALACTIC MEDIUM [PDF]
The Astrophysical Journal, 2013 The effect of environment on the circumgalactic medium (CGM) is investigated through a comparison of Lya absorption line data in the Virgo Cluster and the field. This Letter uses the first systematic survey of background QSOs in and around the Virgo Cluster and large existing surveys of galaxies at low redshift. While previous studies found denser gas (
Yoon, Joo Heon, Putman, Mary
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Role of cosmic rays in the circumgalactic medium [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 We explore the impact of cosmic rays (CRs) on cosmological adaptive-mesh refinement simulations of a forming 10^12 Msolar halo, focusing on the circumgalactic medium (CGM), and its resulting low-redshift structure and composition. In contrast to a run with star formation and energetic feedback but no CRs, the CR-inclusive runs feature a CGM ...
Salem, Munier +2 more
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Circum-Galactic Medium in the Halo of Quasars
Frontiers in Astronomy and Space Sciences, 2017 The properties of circum-galactic gas in the halo of quasar host galaxies are investigated analyzing Mg II 2800 and C IV 1540 absorption-line systems along the line of sight close to quasars.
Riccardo Ottolina +6 more
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Formation of multiphase plasma in galactic haloes and an analogy to solar plasma
Frontiers in Astronomy and Space Sciences, 2023 Thermal instability (TI) potentially explains the origin of cold gas in the intracluster medium (ICM), which is heated sufficiently by AGN feedback. The Hα filaments seen in cluster cores provide strong motivation for TI.
Prakriti Pal Choudhury
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The Circumgalactic Medium of Andromeda [PDF]
Proceedings of the International Astronomical Union, 2016 AbstractOur view of galaxies has been transformed in recent years with diffuse halo gas surrounding galaxies that contains at least as many metals and baryons as their disks. While single sight lines through galaxy halos seen in absorption have provided key new constraints, they provide only average properties. Our massive neighbor, the Andromeda (M31)
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Cosmic Ray Processes in Galactic Ecosystems
Galaxies, 2023 Galaxy evolution is an important topic, and our physical understanding must be complete to establish a correct picture. This includes a thorough treatment of feedback.
Ellis R. Owen +4 more
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