activity
20092026
most citedThe Extended Distribution of Baryons Around Galaxies

137 citations · 1.4k across the 85 of their papers we have counts for

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44 papers · 1 filter

astro-ph.GA2026

Chemical enrichment of the Perseus cluster core seen by XRISM/Resolve

XRISM Collaboration, Marc Audard, Hisamitsu Awaki +143

The intracluster medium (ICM) is rich in chemical elements, produced by core-collapse (SNcc) and Type Ia supernovae (SNIa) over the last 12 Gyr. Whereas cluster outskirts are…

astro-ph.GA2026

XRISM Reveals a Kinematically Coherent Core System of the Nearby Cool-Core Cluster Abell 2199

Kazunori Suda, Kyoko Matsushita, Kosuke Sato +14

We present the results of a deep 251 ks XRISM/Resolve observation of the cool core of the galaxy cluster Abell 2199. From the integrated spectrum of the central Reso…

astro-ph.GA2026

High-resolution X-ray spectroscopy with XRISM/Resolve reveals super-Solar abundance ratios in Virgo/M87

J. Martin, A. Simionescu, F. Mernier +26

The chemical composition of the intracluster medium (ICM) provides key insights into the enrichment history of galaxy clusters. However, high-resolution abundance measurements with…

astro-ph.GA2026★ 6 cited

Dynamics of AGN feedback in the X-ray bright East and Southwest arms of M87, mapped by XRISM

A. Simionescu, C. Kilbourne, H. R. Russell +24

As the central galaxy in the nearest cluster, M87 provides the best spatial resolution for disentangling the complex interactions between AGN jets and the surrounding environment.…

astro-ph.GA2025

A XRISM/Resolve view of the dynamics in the hot gaseous atmosphere of M87

XRISM Collaboration, M. Audard, H. Awaki +138

The XRISM/Resolve microcalorimeter directly measured the gas velocities in the core of the Virgo Cluster, the closest example of AGN feedback in a cluster. This proximity allows us…

astro-ph.GA2025

Comparing XRISM cluster velocity dispersions with predictions from cosmological simulations: are feedback models too ejective?

XRISM Collaboration, Marc Audard, Hisamitsu Awaki +147

The dynamics of the intra-cluster medium (ICM), the hot plasma that fills galaxy clusters, are shaped by gravity-driven cluster mergers and feedback from supermassive black holes (…

astro-ph.GA2025

Central Massive Black Holes Are Not Ubiquitous in Local Low-Mass Galaxies

Fan Zou, Elena Gallo, Anil C. Seth +13

The black-hole occupation fraction () defines the fraction of galaxies that harbor central massive black holes (MBHs), irrespective of their accretion activity leve…

astro-ph.GA2025

Seoul National University AGN Monitoring Project. V. Velocity-resolved H-beta Reverberation Mapping and Evidence of Kinematics Evolution

Shu Wang, Jong-Hak Woo, Aaron J. Barth +13

We present velocity-resolved reverberation lags of H-beta for 20 active galactic nuclei (AGNs) from the Seoul National University AGN Monitoring Project. We detect unambiguous velo…

astro-ph.GA2025★ 1 cited

A XRISM Observation of the Archetypal Radio-Mode Feedback System Hydra-A: Measurements of Atmospheric Motion and Constraints on Turbulent Dissipation

Tom Rose, B. R. McNamara, Julian Meunier +14

We present XRISM Resolve observations centered on Hydra-A, a redshift z = 0.054 brightest cluster galaxy which hosts one of the largest and most powerful FR-I radio sources in the…

astro-ph.GA2024

Evidence for a Fast Soft X-ray Wind in M82 from XMM-RGS

Erin Boettcher, Edmund Hodges-Kluck

Starburst wind models predict that metals and energy are primarily carried out of the disk by hot gas ( K), but the low energy resolution of X-ray CCD observations resu…

astro-ph.GA2024

Illuminating the Incidence of Extraplanar Dust Using Ultraviolet Reflection Nebulae with GALEX

Erin Boettcher, Edmund Hodges-Kluck

Circumgalactic dust grains trace the circulation of mass and metals between star-forming regions and gaseous galactic halos, giving insight into feedback and tidal stripping proces…

astro-ph.GA2024

Kpc-Scale Neutral Iron K Emission in the Starburst-AGN NGC 4945: a Relic AGN Outflow?

Kimberly A. Weaver, Jenna M. Cann, Lynne Valencic +8

NGC 4945 contains a well-known heavily obscured active galactic nucleus (AGN) at its core, with prior reports of strong nuclear and off-nuclear neutral Fe K emission due to the…

astro-ph.GA2024

Haro 11: The Spatially Resolved Lyman Continuum Sources

Lena Komarova, M. S. Oey, Svea Hernandez +13

As the nearest confirmed Lyman continuum (LyC) emitter, Haro 11 is an exceptional laboratory for studying LyC escape processes crucial to cosmic reionization. Our new HST/COS G130M…

astro-ph.GA2023★ 5 cited

X-ray Redshifts for Obscured Active Galactic Nuclei with AXIS Deep and Intermediate Surveys

Alessandro Peca, Nico Cappelluti, Stefano Marchesi +2

This study presents the capabilities of the AXIS telescope in estimating redshifts from X-ray spectra alone (X-ray redshifts, XZs). Through extensive simulations, we establish that…

astro-ph.GA2023★ 19 cited

Scientific Objectives of the Hot Universe Baryon Surveyor (HUBS) Mission

Joel Bregman, Renyue Cen, Yang Chen +51

The Hot Universe Baryon Surveyor (HUBS) is a proposed space-based X-ray telescope for detecting X-ray emissions from the hot gas content in our universe. With its unprecedented spa…

astro-ph.GA2023

Modeling the High-Energy Ionizing Output from Simple Stellar and X-ray Binary Populations

Kristen Garofali, Antara R. Basu-Zych, Benjamin D. Johnson +9

We present a methodology for modeling the joint ionizing impact due to a "simple X-ray population" (SXP) and its corresponding simple stellar population (SSP), where "simple" refer…

astro-ph.GA2023

The Seoul National University AGN Monitoring Project IV: H reverberation mapping of 6 AGNs and the H Size-Luminosity Relation

Hojin Cho, Jong-Hak Woo, Shu Wang +29

The broad line region (BLR) size-luminosity relation has paramount importance for estimating the mass of black holes in active galactic nuclei (AGNs). Traditionally, the size of th…

astro-ph.GA2022★ 36 cited

Widespread Detection of Two Components in the Hot Circumgalactic Medium of the Milky Way

Jesse Bluem, Philip Kaaret, K. D. Kuntz +6

Surrounding the Milky Way (MW) is the circumgalactic medium (CGM), an extended reservoir of hot gas that has significant implications for the evolution of the MW. We used the HaloS…

astro-ph.GA2021★ 11 cited

Exploring the Dust Content of Galactic Halos with Herschel. IV. NGC 3079

S. Veilleux, M. Melendez, M. Stone +11

We present the results from an analysis of deep Herschel far-infrared observations of the edge-on disk galaxy NGC 3079. The PSF-cleaned PACS images at 100 and 160 um display a 25 k…

astro-ph.GA2021★ 20 cited

H Reverberation Mapping of the Intermediate-Mass Active Galactic Nucleus in NGC 4395

Hojin Cho, Jong-Hak Woo, Tommaso Treu +24

We present the results of a high-cadence spectroscopic and imaging monitoring campaign of the active galactic nucleus (AGN) of NGC 4395. High signal-to-noise-ratio spectra were obt…

astro-ph.GA2021★ 56 cited

Hot Extended Galaxy Halos Around Local L* Galaxies From Sunyaev-Zeldovich Measurements

Joel N. Bregman, Edmund Hodges-Kluck, Zhijie Qu +3

Most of the baryons in L* galaxies are unaccounted for and are predicted to lie in hot gaseous halos (T ~ 3E6 K) that may extend beyond R200. A hot gaseous halo will produce a ther…

astro-ph.GA2020★ 63 cited

A disk-dominated and clumpy circumgalactic medium of the Milky Way seen in X-ray emission

P. Kaaret, D. Koutroumpa, K. D. Kuntz +7

The Milky Way galaxy is surrounded by a circumgalactic medium (CGM) that may play a key role in galaxy evolution as the source of gas for star formation and a repository of metals…

astro-ph.GA2020★ 26 cited

A 60-kpc Galactic Wind Cone in NGC 3079

Edmund Hodges-Kluck, Mihoko Yukita, Ryan Tanner +3

Galactic winds are associated with intense star formation and AGNs. Depending on their formation mechanism and velocity they may remove a significant fraction of gas from their hos…

astro-ph.GA2020★ 9 cited

Ultraviolet and X-ray Properties of Coma's Ultra-Diffuse Galaxies

Chris H. Lee, Edmund Hodges-Kluck, Elena Gallo

Many ultra-diffuse galaxies (UDGs) have been discovered in the Coma cluster, and there is evidence that some, notably Dragonfly 44, have Milky Way-like dynamical masses despite dwa…