Results 31 to 40 of about 2,374,498 (256)

Galactic winds in cosmological simulations of the circumgalactic medium [PDF]

Monthly Notices of the Royal Astronomical Society, 2013
(Abridged) We explore new observationally-constrained sub-resolution models of galactic outflows and investigate their impact on the circumgalactic medium (CGM) over redshifts z = 2 - 4. We perform cosmological hydrodynamic simulations, including star formation, chemical enrichment, and four cases of SNe-driven outflows: no wind (NW), an energy-driven ...
Paramita Barai, Matteo Viel, S. Borgani, Edoardo Tescari, L. Tornatore, Klaus Dolag, Madhura Killedar, Pierluigi Monaco, V. D’Odorico, S. Cristiani   +9 more
openalex   +7 more sources

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, Freeke van de Voort, Rebekka Bieri, Facundo A Gómez, Robert J J Grand, Thomas Guillet, Federico Marinacci, Christoph Pfrommer, Christine M Simpson, Volker Springel   +9 more
openaire   +5 more sources

The Circumgalactic Medium [PDF]

Annual Review of Astronomy and Astrophysics, 2017
The gas surrounding galaxies outside their disks or interstellar medium and inside their virial radii is known as the circumgalactic medium (CGM). In recent years this component of galaxies has assumed an important role in our understanding of galaxy evolution owing to rapid advances in observational access to this diffuse, nearly invisible material ...
Tumlinson, Jason, Peeples, Molly S., Werk, Jessica K.   +2 more
openaire   +2 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, Samantha C. Berek, J. Christopher Howk, Bart P. Wakker, Jason Tumlinson, Edward B. Jenkins, J. Xavier Prochaska, Ramona Augustin, Suoqing Ji, Claude-André Faucher-Giguère, Zachary Hafen, Molly S. Peeples, Kat A. Barger, Michelle A. Berg, Rongmon Bordoloi, Thomas M. Brown, Andrew J. Fox, Karoline M. Gilbert, Puragra Guhathakurta, Jason S. Kalirai, Felix J. Lockman, John M. O’Meara, D. J. Pisano, Joseph Ribaudo, Jessica K. Werk   +24 more
openaire   +3 more sources

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., McCarthy, I.G., Schaye, J., Theuns, Tom, Frenk, C.S.   +4 more
openaire   +6 more sources

Project AMIGA: The Inner Circumgalactic Medium of Andromeda from Thick Disk to Halo*

Astrophysical Journal
The inner circumgalactic medium (CGM) of galaxies, where disk and halo processes intersect, remains poorly characterized despite its critical role in regulating galaxy evolution.
Nicolas Lehner, J. Christopher Howk, Lucy Collins, Sameer, Bart P. Wakker, Ramona Augustin, Kathleen A. Barger, Michelle A. Berg, Rongmon Bordoloi, Thomas M. Brown, Frances H. Cashman, Claude-André Faucher-Giguère, Andrew J. Fox, David M. French, Karoline M. Gilbert, Puragra Guhathakurta, John J. O’Meara, B. W. O'Shea, M. Swain, D. J. Pisano, J. Xavier Prochaska, Dalya Baron, Jason Tumlinson, Jessica K. Werk, Benjamin F. Williams   +24 more
openalex   +2 more sources

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, Erik Solhaug, Yakov Faerman, Matthew McQuinn   +3 more
openaire   +2 more sources

X-Ray Emission Signatures of Galactic Feedback in the Hot Circumgalactic Medium: Predictions from Cosmological Hydrodynamical Simulations

Astrophysical Journal
Little is currently known about the physical properties of the hot circumgalactic medium (CGM) surrounding massive galaxies. Next-generation X-ray observatories will enable detailed studies of the hot CGM in emission.
Emily M. Silich, John ZuHone, Elena Bellomi, Cameron Hummels, Benjamin D. Oppenheimer, Philip F. Hopkins, Cassandra Lochhaas, Sam B. Ponnada, A. Vikhlinin   +8 more
openalex   +2 more sources

Constraining magnetic fields in the circumgalactic medium [PDF]

Monthly Notices of the Royal Astronomical Society, 2020
ABSTRACTWe study the properties of magnetic fields in the circumgalactic medium (CGM) of z < 1 galaxies by correlating Faraday rotation measures (RMs) of ∼1000 high-redshift radio sources with the foreground galaxy number density estimated from the DESI Legacy Imaging Surveys.
Ting-Wen Lan 藍鼎文, J Xavier Prochaska   +1 more
openaire   +2 more sources

Probing the Circumgalactic Medium at High-Redshift Using Composite BOSS Spectra of Strong Lyman-alpha Forest Absorbers [PDF]

, 2014
We present composite spectra constructed from a sample of 242,150 Lyman-alpha (Lya) forest absorbers at redshifts 2 ...
Bailey, Stephen J., Busca, Nicolas, Crighton, Neil, Frank, Stephan, Ge, Jian, Kirkby, David, Lee, Khee-Gan, Lundgren, Britt, Mathur, Smita, Mortonson, Michael J., Noterdaeme, Pasquier, Palanque-Delabrouille, Nathalie, Paris, Isabelle, Petitjean, Patrick, Pieri, Matthew M., Rich, James, Ross, Nicholas P., Schneider, Donald P., Weinberg, David H., York, Donald G.   +19 more
core   +7 more sources