Results 41 to 50 of about 2,374,498 (256)
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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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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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.
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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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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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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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Astrophysical JournalOne of the main unknowns in galaxy evolution is how gas flows into and out of galaxies in the circumgalactic medium (CGM). Studies observing the CGM in absorption using multiple or extended background objects suggest a high degree of variation on ...
Ramona Augustin +13 more
openalex +2 more sources
The Mitchell Spectrograph: Studying Nearby Galaxies with the VIRUS Prototype
Advances in Astronomy, Volume 2013, Issue 1, 2013., 2013 The Mitchell Spectrograph (a.k.a. VIRUS‐P) on the 2.7 m Harlan J. Smith telescope at McDonald Observatory is currently the largest field of view (FOV) integral field unit (IFU) spectrograph in the world (1.7′ × 1.7′). It was designed as a prototype for the highly replicable VIRUS spectrograph which consists of a mosaic of IFUs spread over a 16 ...
Guillermo A. Blanc +1 more
wiley +1 more source