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#CGM #Medistar

Praxissoftware von CGM funktioniert nicht mit Rise-Konnektoren
Zwischen CGMs Software und Rise-Konnektoren hakt es mal wieder. Betroffene Praxen können die elektronische Patientenakte nicht befüllen.
https://…

COS-EDGES: Co-rotation and Kinematic Stratification of the Multi-Phase CGM Around Edge-On Galaxies
Glenn G. Kacprzak, Benjamin D. Oppenheimer, Nikole M. Nielsen, Antonia Fernandez-Figueroa, Michael T. Murphy, Rebecca J. Allen, Tania M. Barone, Sameer, Christopher W. Churchill, Joseph N. Burchett, Kaustubh R. Gupta, Jane C. Charlton, Caleb B. Platukis

COS-EDGES: Co-rotation and Kinematic Stratification of the Multi-Phase CGM Around Edge-On Galaxies
We present the first results from the COS-EDGES survey, targeting the kinematic connection between the ISM and multi-phase circumgalactic medium (CGM) in nine isolated, edge-on galaxies at z~0.2, each probed along its major axis by a background quasar at impact parameters of 13-38kpc. Using VLT/UVES and HST/COS quasar spectra, we analyse MgI, MgII, HI, CII, CIII, and OVI absorption relative to galaxy rotation curves from Keck/LRIS and Magellan/MagE spectra. We find that at lower $D/R_{vir}$ ($D…

Molecular Hydrogen in High-redshift Damped Lyman-{\alpha} Absorbers
Alon Gurman, Amiel Sternberg, Shmuel Bialy, Rachel K. Cochrane, Jonathan Stern
https://arxiv.org/abs/2508.13080

Molecular Hydrogen in High-redshift Damped Lyman-α Absorbers
Simulations predict that circumgalactic hydrogen gas surrounding massive ($M_{\rm{halo}}^{z=1}=10^{12}-10^{13}\ M_{\odot}$) galaxies at $z\sim4$ may be predominantly neutral, and could produce damped Ly$α$ absorbers (DLAs) along sight-lines to background quasars \citep{Stern2021}. A circumgalactic medium (CGM) origin for DLAs naturally explains high redshift HI absorption-selected galaxy detections at physical separations much greater than the likely extents of the galaxy disks \citep{Neeleman…

Where is the Supervirial Gas? III. Insights from X-ray Shadow Observations and a revised Model for the Soft Diffuse X-ray Background
Anjali Gupta, Smita Mathur, Joshua Kingsbury, Esma Korkmaz, Sanskriti Das, Yair Krongold, Manami Roy, Armando Lara-DI
https://arxiv.org/abs/2507.13331

Where is the Supervirial Gas? III. Insights from X-ray Shadow Observations and a revised Model for the Soft Diffuse X-ray Background
Shadow observations provide a powerful tool to separate foreground components of the soft diffuse X-ray background (SDXB) from the background components. Such observations have now established that the ``local'' foreground is made of the solar wind charge exchange and the local bubble, and the background emission is from the extended circumgalactic medium (CGM) of the Milky Way and from the unresolved extragalactic sources. New data and careful analyses of the SDXB led to two new discoveries in…

Stars Born in the Wind: M82's Outflow and Halo Star Formation
Vaishnav V. Rao, Adam Smercina, Eric F. Bell, Benjamin Williams, Julianne J. Dalcanton, Andrew Dolphin, Adam Leroy, Antonela Monachesi, Jeremy Bailin, Roelof S. de Jong, Fabian Walter
https://arxiv.org/abs/2508.10895

Stars Born in the Wind: M82's Outflow and Halo Star Formation
Starburst galaxies, like M82, launch kiloparsec-scale galactic outflows that interact with the circumgalactic medium (CGM) in complex ways. Apart from enriching the CGM with metals and energy, these outflows may trigger star formation in the halo -- either by driving shocks into the CGM or transporting cold, star-forming gas. To investigate such processes, we analyze the star formation history (SFH) of the Southern Arcs -- arc-like stellar features located ~5 kpc from M82's star-forming disk al…

Thermal Sunyaev-Zel'dovich Effect in the circumgalactic medium -- II: dependence on star formation
Sanskriti Das, Nhut Truong, Yi-Kuan Chiang, Smita Mathur
https://arxiv.org/abs/2508.09514

Thermal Sunyaev-Zel'dovich Effect in the circumgalactic medium -- II: dependence on star formation
We measure thermal Sunyaev-Zel'dovich (tSZ) Effect in the circumgalactic medium (CGM) of $\approx$2.5 million $\rm M_{200}$=$\rm 10^{12-14}\,M_\odot$ WISE$\times$DESI galaxies out to $z$=1.2. We split the sample into quiescent (0.7 million) and star-forming (1.8 million) galaxies, exploring the relation between the thermal pressure of the CGM and star formation for the first time. We develop and implement a novel probabilistic approach to cross-correlate the galaxy catalog with the Atacama Cosm…

Eutelsat, concurrent européen de Starlink, prépare une augmentation de capital qui fera de l’Etat français son premier actionnaire
https://www.lemonde.fr/economie/…

Eutelsat, concurrent européen de Starlink, prépare une augmentation de capital qui fera de l’Etat français son premier actionnaire
Trois autres actionnaires, l’armateur français CMA CGM, l’opérateur indien Bharti Airtel ainsi que le Fonds stratégique de participations sont aussi impliqués dans le projet.

Testing the AGN unified model with simulated emission lines from the circumgalactic medium (CGM)
Shiwu Zhang, Zheng Cai, Aura Obreja, Fabrizio Arrigoni Battaia, L\'eo Michel-Dansac, J\'er\'emy Blaizot, Donghui Quan, Mingyu Li
https://arxiv.org/abs/2507.19585

Testing the AGN unified model with simulated emission lines from the circumgalactic medium (CGM)
The CGM around unobscured AGN has received much attention in recent years. Comparatively, nebulae associated with obscured AGN are less studied. Here, we simulate the Ly$α$, H$α$, and HeII nebulae around the two types of AGN at $z=2-3$ with ten massive systems from the FIRE simulations based on the unified model to show their differences and to test if they can be used to constrain the AGN model. We post-process the data with the CLOUDY and the Ly$α$ radiative transfer code, RASCAS. Overall,…

Magnetic fields in galactic environments probed by Fast Radio Bursts
Ilya S. Khrykin, Nicolas Tejos, J. Xavier Prochaska, Alexandra Mannings, Lluis Mas-Ribas, Kentaro Nagamine, Khee-Gan Lee, Bryan Gaensler, Zhao Joseph Zhang, Lucas Bernales-Cortes
https://arxiv.org/abs/2509.08896

Magnetic fields in galactic environments probed by Fast Radio Bursts
FRBs constitute a unique probe of various astrophysical and cosmological environments via their characteristic dispersion and rotation (RM) measures that encode information about the ionized gas traversed by the FRB sightlines. In this work, we analyse observed RM measured for 14 localized FRBs at $0.05 \lesssim z \lesssim 0.5$, to infer total magnetic fields in various galactic environments. Additionally, we calculate $f_{\rm gas}$ - the average fraction of halo baryons in the ionized CGM. We …

XMAGNET : Kinetic, Thermal and Magnetic AGN Feedback in Massive Galaxies at Halo Masses $\sim 10^{13.5}$ M$_\odot$
Deovrat Prasad, Philipp Grete, Brian O'Shea, Forrest Glines, Mark Voit, Freeke van de Voort, Martin Fournier, Benjamin Wibking
https://arxiv.org/abs/2508.17508

XMAGNET : Kinetic, Thermal and Magnetic AGN Feedback in Massive Galaxies at Halo Masses $\sim 10^{13.5}$ M$_\odot$
The interplay between radiative cooling of the circumgalactic medium (CGM) and feedback heating governs the evolution of the universe's most massive galaxies. This paper presents simulations of feedback processes in massive galaxies showing how kinetic, thermal, and magnetic active galactic nuclei (AGN) feedback interacts with the CGM under different environmental conditions. We find that in massive galaxies with shallower central gravitational potential and higher CGM pressure (multiphase gala…

Detection of 'super-virial' gas in the Circumgalactic medium of the Milky Way towards PKS 2155-304
Mukesh Singh Bisht, Sanskriti Das, Smita Mathur, Manami Roy, Yair Krongold, Anjali Gupta
https://arxiv.org/abs/2509.02019

Detection of 'super-virial' gas in the Circumgalactic medium of the Milky Way towards PKS 2155-304
We present the first simultaneous detection of four distinct highly ionized $z=0$ absorbing phases using Chandra and XMM-Newton grating spectra toward the blazar PKS 2155$\hbox{-}$304. We detect the MgXII K$α$ absorption line for the first time in the circumgalactic medium (CGM) of the Milky Way. Along with MgXII K$α$, we detect SiXIV K$α$ absorption, which are the tell-tale signatures of the hot 'super-virial' gas in the CGM. Both from the model-independent calculations and hybrid-ionizatio…

X-ray emission signatures of galactic feedback in the hot circumgalactic medium: predictions from cosmological hydrodynamical simulations
Emily M. Silich, John ZuHone, Elena Bellomi, Cameron Hummels, Benjamin Oppenheimer, Philip F. Hopkins, Cassandra Lochhaas, Sam B. Ponnada, Alexey Vikhlinin
https://arxiv.org/abs/2506.17440

X-ray emission signatures of galactic feedback in the hot circumgalactic medium: predictions from cosmological hydrodynamical simulations
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. To support these future efforts, we make predictions of the X-ray emission from the hot CGM using a sample of 28 $\sim$Milky Way-mass disk galaxies at $z=0$ from seven cosmological hydrodynamical simulation suites incorporating a wide range of galactic feedback prescriptions. The …

Intergalactic Medium Tomography with the Sunburst Arc
Michelle A. Berg, John Chisholm, J. Xavier Prochaska, T. Emil Rivera-Thorsen, Michael D. Gladders, Keren Sharon, Claus Leitherer, J. J. Eldridge, Matthew Bayliss, Haakon Dahle, Jane R. Rigby, Anne Verhamme
https://arxiv.org/abs/2507.06443…

Intergalactic Medium Tomography with the Sunburst Arc
Gravitational lensing has transformed the field of gas tomography in the intergalactic medium (IGM) and circumgalactic medium (CGM). Here we use the brightest lensed galaxy identified to date, the Sunburst Arc ($z$$\approx$2.37), to constrain the physical size of foreground absorbers at $z$$\approx$2 in 2D. This galaxy is a confirmed Lyman continuum leaker, where its single leaking region is imaged 12 times over four separate arcs. The separations between the arcs allows for large scale tomogra…

Cosmic Rays on Galaxy Scales: Progress and Pitfalls for CR-MHD Dynamical Models
Philip F. Hopkins
https://arxiv.org/abs/2509.07104 https://arxiv.org/pdf/25…

Cosmic Rays on Galaxy Scales: Progress and Pitfalls for CR-MHD Dynamical Models
Recent years have seen many arguments for cosmic rays (CRs) as an important influence on galactic and circumgalactic (CGM) physics, star and galaxy formation. We present a pedagogical overview of state-of-the-art modeling of CR-magnetohydrodynamics (CR-MHD) on macro scales (~kpc), highlighting their fundamental dependence on the micro (< au) scales of CR gyro orbits and meso (~pc) scales of CR mean-free-paths, intended to connect the extragalactic, Galactic, and plasma CR transport modeling com…

Unveiling the Impact of Cosmic Rays on the Disc Sizes and Outflows from Dwarf Scales to Galaxy Groups
Rebekka Bieri, R\"udiger Pakmor, Freeke van de Voort, Rosie Y. Talbot, Maria Werhahn, Christoph Pfrommer, Volker Springel
https://arxiv.org/abs/2509.07124

Unveiling the Impact of Cosmic Rays on the Disc Sizes and Outflows from Dwarf Scales to Galaxy Groups
Cosmic rays (CRs) are a non-thermal energy component in the interstellar and circumgalactic medium (CGM) that can act as an additional feedback channel beyond thermal and kinetic feedback from stars and AGN. They influence galaxy evolution by altering gas properties, regulating star formation, and shaping galactic outflows. We investigate these effects using a suite of cosmological zoom-in simulations, which incorporate CR transport and feedback on top of the Auriga galaxy formation model. Our …

Project AMIGA: The Inner Circumgalactic Medium of Andromeda from Thick Disk to Halo
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-Andr\'e Faucher-Gigu\`ere, Andrew J. Fox, David M. French, Karoline M. Gilbert, Puragra Guhathakurta, John M. O'Meara, Brian W. O'Shea, Molly S. Peeples, D. J. Pisano, J. Xavier Prochaska, Jonathan Ste…

Project AMIGA: The Inner Circumgalactic Medium of Andromeda from Thick Disk to Halo
The inner circumgalactic medium (CGM) of galaxies, where disk and halo processes intersect, remains poorly characterized despite its critical role in regulating galaxy evolution. We present results from Project AMIGA Insider, mapping Andromeda's (M31) inner CGM within 0.25 R_vir (~75 kpc) using 11 QSO sightlines, bringing our total sample to 54 sightlines from the disk to 2 R_vir. We detect a clear transition between M31's thick disk and CGM at R < 30 kpc, where low/intermediate ions show thick…

X-ray view of a massive node of the Cosmic Web at z=3 II. Discovery of extended X-ray emission around a hyperluminous QSO
Andrea Travascio, Sebastiano Cantalupo, Gabriele Pezzulli, Paolo Tozzi, Luca Di Mascolo, Michela Esposito, Titouan Lazeyras, Marika Lepore, Stefano Borgani, Martin Elvis, Giuseppina Fabbiano, Marta Galbiati, Nicholas Ledos, Riccardo Middei, Antonio Pensabene, Enrico Piconcelli, Giada Quadri, Fabio Vito, Weichen Wang, Luca Zappacosta

X-ray view of a massive node of the Cosmic Web at z=3 II. Discovery of extended X-ray emission around a hyperluminous QSO
While the warm, ionized gas in the CGM at z>3 is now routinely observed around bright QSOs in Lya emission, little is known about the CGM hot phase due to its expected faintness in the X-ray band, often referred to as the ICM. Here, we report the analysis of 634 ks of Chandra X-ray observations in the MQN01 Cosmic Node, a region containing one of the brightest Lya nebulae and the largest galaxy overdensity discovered so far at z>3. We detect 66 net counts of X-ray emission in the 0.5-2 keV band…

Dynamics of Multiphase Carbon in the Turbulent Circumgalactic Medium
Yue Hu, Evan Scannapieco, Edward Buie II, Siyao Xu, Samuel T Sebastian, Om Biswal
https://arxiv.org/abs/2506.17554

Dynamics of Multiphase Carbon in the Turbulent Circumgalactic Medium
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 consistent physical model that fully explains these results. Here we investigate the impact of turbulence and non-equilibrium chemistry on the properties of the CGM, using three-dimensional hydrodynamic simulations that include the impact of an ionizin…

The role of magnetic fields in ram pressure stripping of satellite galaxies in the circumgalactic medium around massive galaxies
Thomas A. Rintoul (Cardiff), Freeke van de Voort (Cardiff), Andrew T. Hannington (Cardiff), R\"udiger Pakmor (MPA), Rebekka Bieri (Zurich), Maria Werhahn (MPA), Rosie Y. Talbot (MPA)
https://arxiv…

The role of magnetic fields in ram pressure stripping of satellite galaxies in the circumgalactic medium around massive galaxies
The presence of magnetic fields in galaxies and their haloes could have important consequences for satellite galaxies moving through the magnetised circumgalactic medium (CGM) of their host. We therefore study the effect of magnetic fields on ram pressure stripping of satellites in the CGM of massive galaxies. We use cosmological `zoom-in' simulations of three massive galaxy haloes ($M_{\rm{200c}} = 10^{12.5-13}$M$_\odot$), each simulated with and without magnetic fields. The fraction of gas re…

Impact of the large-scale cosmic web on the X-ray emitting circumgalactic medium
Soumya Shreeram, Daniela Gal\'arraga-Espinosa, Johan Comparat, Andrea Merloni, Daisuke Nagai, C\'eline Peroux, Ilaria Marini, C\'eline Gouin, Kirpal Nandra, Yi Zhang, Gabriele Ponti, Anna Olechowska
https://arxiv.org/abs/2506.17222

Impact of the large-scale cosmic web on the X-ray emitting circumgalactic medium
The hot circumgalactic medium (CGM), probed by X-ray observations, plays a central role in understanding gas flows that drive a galaxy's evolution. While CGM properties have been widely studied, the influence of a galaxy's large-scale cosmic environment on the hot gas content remains less explored. We investigate how the large-scale cosmic web affects the X-ray surface brightness (XSB) profiles of galaxies in the context of cosmological simulations. We use our novel IllustrisTNG-based lightcone…

QSO MUSEUM III: the circumgalactic medium in Ly$\alpha$ emission around 120 $z\sim3$ quasars covering the SDSS parameter space. Witnessing the instantaneous AGN feedback on halo scales
Jay Gonz\'alez Lobos, Fabrizio Arrigoni Battaia, Aura Obreja, Guinevere Kauffmann, Emanuele Paolo Farina, Tiago Costa
https://arxiv.org/abs/2…

QSO MUSEUM III: the circumgalactic medium in Ly$α$ emission around 120 $z\sim3$ quasars covering the SDSS parameter space. Witnessing the instantaneous AGN feedback on halo scales
Recent surveys show that $z>2$ quasars are surrounded by Hydrogen Lyman-$α$ (Ly$α$) glows with diverse emission levels and extents. These seem to depend on the activity of embedded quasars, the number of active galactic nucleus (AGN) photons able to reach the halo gas or circumgalactic medium (CGM) and the physical properties of the CGM. In this framework, we present VLT/MUSE snapshot observations (45 min/source) of 59 $z\sim3$ quasars extending the long-term QSO MUSEUM campaign to fainter SD…

Deciphering The Launching of Multi-phase AGN-driven Outflows and Their (Spatially Resolved) Multi-scale Impact
Lulu Zhang, Gagandeep Kaur, Tianmu Gao, \'Alvaro Labiano, Erin K. S. Hicks, Vivian U, Chris Packham, Missagh Mehdipour, Travis Fischer, Thaisa Storchi Bergmann, Namrata Roy, Isabel M\'arquez, Christiaan Boersma
https://arx…

Deciphering The Launching of Multi-phase AGN-driven Outflows and Their (Spatially Resolved) Multi-scale Impact
Beyond deepening our understanding of the formation, growth, and evolution of supermassive black holes, it is crucial to uncover the role of feeding and feedback processes from growing black holes (i.e., active galactic nucleus; AGN) in shaping the cosmic ecosystem. Such studies include understanding the dynamics of gas flows in the interstellar (ISM), circumgalactic (CGM), intracluster (ICM), and intergalactic media (IGM). As the output of a sub-group in Habitable Worlds Observatory (HWO) AGN …

Time-Dependent Cosmic Ray Halos from Bursty Star Formation and Active Galactic Nuclei: Semi-Analytic Formalism and Galaxy Formation Implications
Sam B. Ponnada
https://arxiv.org/abs/2509.02697

Time-Dependent Cosmic Ray Halos from Bursty Star Formation and Active Galactic Nuclei: Semi-Analytic Formalism and Galaxy Formation Implications
Cosmic ray (CR) feedback in galaxy evolution has seen a theoretical resurgence in the past decade, but significant uncertainties remain in CR transport through the interstellar and circum-galactic media (ISM and CGM). While several works indicate CR effects may be notable in both star-forming and quenched massive galaxies, modeling the vast CR transport parameter space currently allowed by observations is computationally restrictive to survey. Analytic treatments of CR feedback have provided us…

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

Stellar Mass-Dispersion Measure Correlations Constrain Baryonic Feedback in Fast Radio Burst Host Galaxies
Low redshift fast radio bursts (FRBs) provide robust measurements of the host-galaxy contribution to the dispersion measure (DM), which can constrain the circumgalactic medium (CGM) of the hosts. We curate a sample of 20 nearby FRBs with low scattering timescales and face-on host galaxies with stellar masses ranging from $10^9 < M^* / M_\odot < 10^{11}$. We fit the distribution of the host galaxy DM to a quadratic model as a function of stellar mass with a mass-independent scatter and find that…