Results 101 to 110 of about 2,374,498 (256)

Unveiling the Sources of X-Ray Luminosity in DESI Galaxy Groups: Insights from the SRG/eROSITA All-sky Survey

The Astrophysical Journal
We use the first eROSITA all-sky survey to investigate the contributions of active galactic nuclei (AGN) and extended gas to the total X-ray luminosity ( L _X ) of galaxy groups with different halo masses ( M _h ) at different redshifts.
Yun-Liang Zheng, Xiaohu Yang, Teng Liu, Shijiang Chen, Esra Bulbul, Ang Liu, Yi Zhang, Dawei Li, Xi Kang, Yizhou Gu, Yirong Wang, Qingyang Li, Jiaqi Wang   +12 more
doaj   +1 more source

CloudFlex: A Flexible Parametric Model for the Small-Scale Structure of the Circumgalactic Medium [PDF]

, 2023
Cameron Hummels, Kate H. R. Rubin, Evan E. Schneider, Drummond B. Fielding   +3 more
openalex   +1 more source

Gravitational lensing reveals ionizing ultraviolet photons escaping from a distant galaxy [PDF]

, 2019
During the epoch of reionisation, neutral gas in the early Universe was ionized by hard ultraviolet radiation emitted by young stars in the first galaxies. To do so, ionizing ultraviolet photons must escape from the host galaxy.
Bayliss, Matthew, Chisholm, John, Dahle, Håkon, Florian, Michael K., Gladders, Michael D., Gronke, Max, Mahler, Guillaume, Rigby, Jane R., Rivera-Thorsen, T. Emil, Sharon, Keren   +9 more
core   +1 more source

The AGORA High-resolution Galaxy Simulations Comparison Project. VI. Similarities and Differences in the Circumgalactic Medium [PDF]

Astrophysical Journal
We analyze the circumgalactic medium (CGM) for eight commonly-used cosmological codes in the AGORA collaboration. The codes are calibrated to use identical initial conditions, cosmology, heating and cooling, and star formation thresholds, but each ...
C. Strawn, S. Roca-Fàbrega, J. Primack, Ji-hoon Kim, Anna Genina, L. Hausammann, Hyeonyong Kim, A. Lupi, K. Nagamine, Johnny W. Powell, Y. Revaz, I. Shimizu, Héctor Velázquez, Tom Abel, D. Ceverino, Bili Dong, Minyong Jung, Thomas R. Quinn, Eunjee Shin, Kirk S. S. Barrow, A. Dekel, B. Oh, Nir Mandelker, R. Teyssier, C. Hummels, Soumily Maji, Antonio Man, Paul Mayerhofer   +27 more
semanticscholar   +1 more source

MUSEQuBES: The Kinematics of O vi-bearing Gas in and around Low-redshift Galaxies

The Astrophysical Journal
We present a detailed study of the kinematics of O vi -bearing gas around 60 low-mass (median ${\mathrm{log}}_{10}({M}_{\star }/{M}_{\odot })$  = 8.9) galaxies at low redshift (0.1 
Sayak Dutta, Sowgat Muzahid, Joop Schaye, Sebastiano Cantalupo, Hsiao-Wen Chen, Sean Johnson   +5 more
doaj   +1 more source

Validating Semi-Analytic Models of High-Redshift Galaxy Formation using Radiation Hydrodynamical Simulations [PDF]

, 2018
We use a cosmological hydrodynamic simulation calculated with Enzo and the semi-analytic galaxy formation model (SAM) GAMMA to address the chemical evolution of dwarf galaxies in the early universe.
Côté, Benoit, O'Shea, Brian W., Silvia, Devin, Smith, Britton, Wise, John H.   +4 more
core   +2 more sources

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

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

An HST/COS legacy survey of intervening SiIII absorption in the extended gaseous halos of low-redshift galaxies

, 2016
Doubly ionized silicon (SiIII) is a powerful tracer of diffuse ionized gas inside and outside of galaxies. It can be observed in the local Universe in ultraviolet (UV) absorption against bright extragalactic background sources.
Fechner, C., Fox, A. J., Herenz, P., Richter, P., Tepper-Garcia, T., Wakker, B. P.   +5 more
core   +1 more source

X-Raying CAMELS: Constraining Baryonic Feedback in the Circumgalactic Medium with the CAMELS Simulations and eRASS X-Ray Observations [PDF]

Astrophysical Journal
The circumgalactic medium (CGM) around massive galaxies plays a crucial role in regulating star formation and feedback. Using the Cosmology and Astrophysics with MachinE Learning Simulations (CAMELS) suite, we develop emulators for the X-ray surface ...
E. Lau, D. Nagai, Á. Bogdán, Isabel Medlock, B. Oppenheimer, Nicholas Battaglia, D. Angl'es-Alc'azar, S. Genel, Yueying Ni, F. Villaescusa-Navarro   +9 more
semanticscholar   +1 more source