Results 31 to 40 of about 1,565,970 (180)

X-Ray Detection of the Galaxy’s Missing Baryons in the Circumgalactic Medium of L* Galaxies [PDF]

, 2023
The number of baryons hosted in the disks of galaxies is lower than expected based on the mass of their dark matter halos and the fraction of baryon-to-total matter in the Universe, giving rise to the so-called galaxy missing-baryon problem. The presence
E. Piconcelli, Zappacosta, L., Feruglio, C., C. Feruglio, Nicastro, Fabrizio, S. Mathur, Piconcelli, E., Z. Zhou, Zhou, Z., Bianchi, S., Fraternali, F.; id_orcid, Krongold, Y., Fraternali, F., Fang, T., Mathur, S., Bischetti, M., F. Fraternali, De Rosa, A., L. Zappacosta, Gupta, A., M. Bischetti, Fabrizio Nicastro, T. Fang, A. De Rosa, Y. Krongold, S. Bianchi, A. Gupta   +26 more
core   +3 more sources

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, Bryan, Greg L., Corlies, Lauren   +2 more
openaire   +2 more sources

The origins of the circumgalactic medium in the FIRE simulations [PDF]

Monthly Notices of the Royal Astronomical Society, 2019
ABSTRACT We use a particle tracking analysis to study the origins of the circumgalactic medium (CGM), separating it into (1) accretion from the intergalactic medium (IGM), (2) wind from the central galaxy, and (3) gas ejected from other galaxies. Our sample consists of 21 FIRE-2 simulations, spanning the halo mass range Mh ∼ 1010–1012 M⊙,
Norman Murray, Philip F Hopkins, T K Chan, Andrew Wetzel, Kareem El-Badry, Shea Garrison-Kimmel, Clarke Esmerian, Cameron Hummels, Dušan Kereš, Jonathan Stern, Daniel Anglés-Alcázar, Claude-André Faucher-Giguère, Zachary Hafen   +12 more
openaire   +4 more sources

MUSE-ALMA Haloes XI: gas flows in the circumgalactic medium

, 2023
The flow of gas into and out of galaxies leaves traces in the circumgalactic medium which can then be studied using absorption lines towards background quasars.
Simon Weng (19103831), Elaine M. Sadler (19018193), Aleksandra Hamanowicz (19103846), Victoria Bollo (19103834), Céline Péroux (19020200), Glenn Kacprzak (18924052), Arjun Karki (3472460), Matthew J. Hayes (7201070), Andrew J. Fox (5366662), Roland Szakacs (19103840), Dylan Nelson (12083210), Martin Zwaan (19000325), Benedetta Casavecchia (19103837), Varsha P. Kulkarni (19103843), Ramona Augustin (19074947)   +14 more
core   +1 more source

Understanding the circumgalactic medium is critical for understanding galaxy evolution [PDF]

, 2019
The circumgalactic medium is a major reservoir of baryons and metals, playing a key role in the long cycles of accretion, feedback, and recycling of gas driving galaxy evolution. Fundamental progress on major issues in galaxy evolution depends critically
al, et, Brooks, Alyson, Chen, Hsiao-Wen, Burchett, Joseph N., Peeples, Molly, Bordoloi, Rongmon, Diamond-Stanic, Aleksandar M., Chisholm, John, Coil, Alison, Bullock, James S., Behroozi, Peter, Christensen, Charlotte, Corlies, Lauren   +12 more
core   +3 more sources

A disk-dominated and clumpy circumgalactic medium of the Milky Way seen in X-ray emission

, 2020
International audienceThe Milky Way galaxy is surrounded by a circumgalactic medium that may play a key role in galaxy evolution as the source of gas for star formation and a repository of metals and energy produced by star formation and nuclear activity.
Kaaret, Philip, Bluem, J., Zajczyk, A., Jahoda, K., Gulick, H., Larocca, D. M., Koutroumpa, Dimitra, Ringuette, R., Kuntz, K. D., Hodges-Kluck, E.   +9 more
core   +1 more source

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, Kinwah Wu, Yoshiyuki Inoue, H.-Y. Karen Yang, Alison M. W. Mitchell   +4 more
doaj   +1 more source

The Circumgalactic Medium of Quasars [PDF]

Proceedings of the International Astronomical Union, 2013
AbstractI will argue that observations of the diffuse gas in the outskirts of quasar host galaxies, or the so called circumgalactic medium, are essential for understanding how luminous quasars evolve in a cosmological context. Such observations also provide a fruitful comparison to theory, because hydrodynamics at moderate overdensities is much easier ...
openaire   +1 more source

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
doaj   +1 more source

Interpreting Observations of Absorption Lines in the Circumgalactic Medium with a Turbulent Medium [PDF]

The Astrophysical Journal, 2020
Abstract Single-phase photoionization equilibrium (PIE) models are often used to infer the underlying physical properties of galaxy halos probed in absorption with ions at different ionization potentials. To incorporate the effects of turbulence, we use the Models of Agitated and Illuminated Hindering and Emitting Media (MAIHEM) code to ...
Edward Buie, Michele Fumagalli, Evan Scannapieco   +2 more
openaire   +5 more sources