Results 81 to 90 of about 5,245 (177)

The Morphology and Kinematics of a Giant, Symmetric Nebula around a Radio-loud Quasar 3C 57: Extended Rotating Gas or Biconical Outflows?

The Astrophysical Journal
Gas flows between galaxies and the circumgalactic medium play a crucial role in galaxy evolution. When ionized by a quasar, these gas flows can be directly traced as giant nebulae. We present a study of a giant nebula around a radio-loud quasar, 3C 57 at
Zhuoqi (Will) Liu, Sean D. Johnson, Jennifer I-Hsiu Li, Benoît Epinat, Gwen C. Rudie, Ana Monreal-Ibero, Sebastiano Cantalupo, Zhijie Qu, Mandy C. Chen, Wolfram Kollatschny, Sowgat Muzahid, Fakhri S. Zahedy, Elise Kesler, Nishant Mishra   +13 more
doaj   +1 more source

Characterizing the Circumgalactic Medium of Nearby Galaxies with HST/COS and HST/STIS Absorption-Line Spectroscopy: II. Methods and Models

, 2017
We present basic data and modeling for a survey of the cool, photo-ionized Circum-Galactic Medium (CGM) of low-redshift galaxies using far-UV QSO absorption line probes.
Danforth, Charles W., Froning, Cynthia S., Green, James C., Keeney, Brian A., Penton, Steven V., Pratt, Cameron T., Savage, Blair D., Shull, J. Michael, Stocke, John T.   +8 more
core   +1 more source

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

Fast Radio Burst Tomography of the Unseen Universe [PDF]

, 2019
The discovery of Fast Radio Bursts (FRBs) at cosmological distances has opened a powerful window on otherwise unseen matter in the Universe. In the 2020s, observations of $>10^{4}$ FRBs will assess the baryon contents and physical conditions in the hot ...
Battaglia, Nicholas, Burke-Spolaor, Sarah, Chatterjee, Shami, Cordes, James, Hallinan, Gregg, Law, Casey, Lazio, T. Joseph W., Masui, Kiyoshi, McQuinn, Matthew, Munoz, Julian B., Palliyaguru, Nipuni, Prochaska, J. Xavier, Ravi, Vikram, Seymour, Andrew, Vedantham, Harish, Zheng, Yong   +15 more
core   +2 more sources

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

Starburst and post-starburst high-redshift protogalaxies: The feedback impact of high energy cosmic rays

, 2019
Quenching of star-formation has been identified in many starburst and post-starburst galaxies, indicating burst-like star-formation histories (SFH) in the primordial Universe.
Jin, Xiangyu, Kataoka, Noriko, Owen, Ellis R., Surajbali, Pooja, Wu, Kinwah   +4 more
core   +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