Results 61 to 70 of about 437 (157)

Cosmic Ray Mediated Thermal Fronts in the Warm-hot Circumgalactic Medium

The Astrophysical Journal
We investigate the 1D plane-parallel front connecting the warm (10 ^4 K) and hot (10 ^6 K) phases of the circumgalactic medium (CGM), focusing on the influence of cosmic rays (CRs) in shaping these transition layers.
Hanjue Zhu, Ellen G. Zweibel, Nickolay Y. Gnedin   +2 more
doaj   +1 more source

The Cosmic Ultraviolet Baryon Survey (CUBS). IX. The Enriched Circumgalactic and Intergalactic Medium Around Star-forming Field Dwarf Galaxies Traced by O vi Absorption

The Astrophysical Journal
The shallow potential wells of star-forming dwarf galaxies make their surrounding circumgalactic and intergalactic medium (CGM/IGM) sensitive laboratories for studying the inflows and outflows thought to regulate galaxy evolution.
Nishant Mishra, Sean D. Johnson, Gwen C. Rudie, Hsiao-Wen Chen, Joop Schaye, Zhijie Qu, Fakhri S. Zahedy, Erin T. Boettcher, Sebastiano Cantalupo, Mandy C. Chen, Claude-André Faucher-Giguére, Jenny E. Greene, Jennifer I-Hsiu Li, Zhuoqi (Will) Liu, Sebastian Lopez, Patrick Petitjean   +15 more
doaj   +1 more source

Understanding gas mixing in the circumgalactic medium

Monthly Notices of the Royal Astronomical Society
ABSTRACT We study gas mixing in a simulated Milky Way–mass galaxy’s circumgalactic medium (CGM) using cosmological ‘zoom-in’ simulations. We insert tracer dyes in the CGM with different gas flows (shearing, coherent, and static) and diverse physical properties to track gas mixing.
Hilay Shah, Freeke van de Voort, Amit Seta, Christoph Federrath   +3 more
openaire   +2 more sources

Impacts of the Metagalactic Ultraviolet Background on Circumgalactic Medium Absorption Systems

The Astrophysical Journal
Among the many different pieces of physics that go into simulations of the circumgalactic medium (CGM), the metagalactic ultraviolet background (UVB) plays a significant role in determining the ionization state of different metal species.
Elias Taira, Claire Kopenhafer, Brian W. O’Shea, Alexis Manning, Evelyn Fuhrman, Molly S. Peeples, Jason Tumlinson, Britton D. Smith   +7 more
doaj   +1 more source

On the Origin of the 107 K Hot Emitting Gas in the Circumgalactic Medium of the Milky Way

The Astrophysical Journal
The presence of the ≈10 ^6 K gas in the circumgalactic medium of the Milky Way (MW) has been well established. However, the location and the origin of the newly discovered hot gas at “supervirial (SV)” temperatures of ≈10 ^7 K have been puzzling.
Mukesh Singh Bisht, Biman B. Nath, Smita Mathur   +2 more
doaj   +1 more source

Resolving Turbulence Drivers in Two Luminous Obscured Quasars with JWST/NIRSpec Integral Field Unit

The Astrophysical Journal Letters
In this Letter, we investigate the turbulence and energy injection in the extended nebulae surrounding two luminous obscured quasars, WISEA J100211.29+013706.7 ( z = 1.5933) and SDSS J165202.64+172852.3 ( z = 2.9489).
Mandy C. Chen, Hsiao-Wen Chen, Michael Rauch, Andrey Vayner, Weizhe Liu, David S. N. Rupke, Jenny E. Greene, Nadia L. Zakamska, Dominika Wylezalek, Guilin Liu, Sylvain Veilleux, Nicole P. H. Nesvadba, Caroline Bertemes   +12 more
doaj   +1 more source

Stellar Mass–Dispersion Measure Correlations Constrain Baryonic Feedback in Fast Radio Burst Host Galaxies

The Astrophysical Journal Letters
Low-redshift fast radio bursts (FRBs) enable robust measurements of the host galaxy contribution to the dispersion measure (DM), offering valuable constraints on the circumgalactic medium (CGM) of FRB hosts.
Calvin Leung, Sunil Simha, Isabel Medlock, Daisuke Nagai, Kiyoshi W. Masui, Lordrick A. Kahinga, Adam E. Lanman, Shion Andrew, Kevin Bandura, Alice P. Curtin, B. M. Gaensler, Nina Gusinskaia, Ronniy C. Joseph, Mattias Lazda, Lluis Mas-Ribas, Bradley W. Meyers, Kenzie Nimmo, Aaron B. Pearlman, J. Xavier Prochaska, Mawson W. Sammons, Kaitlyn Shin, Kendrick Smith, Haochen Wang, (CHIME/FRB Collaboration)   +23 more
doaj   +1 more source

A Comprehensive Characterization of Galaxy-cool CGM Connections at z < 0.4 with DESI Year 1 Data

The Astrophysical Journal
We investigate the relationships between the cool circumgalactic medium (CGM), traced by Ca ii absorption lines, and galaxy properties at z  
Yu Voon Ng, Ting-Wen Lan, J. Xavier Prochaska, Amélie Saintonge, Yu-Ling Chang, Małgorzata Siudek, J. Aguilar, S. Ahlen, D. Bianchi, D. Brooks, T. Claybaugh, A. de la Macorra, A. Dey, P. Doel, S. Ferraro, J. E. Forero-Romero, E. Gaztañaga, S. Gontcho A Gontcho, G. Gutierrez, K. Honscheid, M. Ishak, S. Juneau, T. Kisner, A. Kremin, M. Landriau, L. Le Guillou, M. Manera, A. Meisner, R. Miquel, J. Moustakas, A. D. Myers, S. Nadathur, C. Poppett, I. Pérez-Ràfols, G. Rossi, E. Sanchez, D. Schlegel, M. Schubnell, H. Seo, J. Silber, G. Tarlé, B. A. Weaver, R. Zhou, H. Zou   +43 more
doaj   +1 more source

Dynamics of Multiphase Carbon in the Turbulent Circumgalactic Medium

The Astrophysical Journal
The circumgalactic medium (CGM) plays a crucial role in regulating material and energy exchange between galaxies and their environments. The best means of observing this medium is through absorption-line spectroscopy, but we have yet to develop a ...
Yue Hu, Evan Scannapieco, Edward Buie II, Siyao Xu, Samuel T Sebastian, Om Biswal   +5 more
doaj   +1 more source

Characterizing the Circumgalactic Medium in Emission

, 2015
In this thesis I focus on understanding the physical properties of extended Lyman-alpha emitting gas at high redshift, from the circumgalactic medium (CGM) and intergalactic medium (IGM). First, I investigate the physics of giant, luminous Lyman-alpha nebulae known as Lyman alpha blobs (LABs).
openaire   +2 more sources