activity
20092026
most citedThe Hot and Energetic Universe: A White Paper presenting the science theme motivating the Athena+ mission

395 citations · 4.1k across the 114 of their papers we have counts for

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Showing astro-ph.GAShow all

31 papers · 1 filter

astro-ph.GA2026★ 1 cited

Mechanisms Affecting Galaxies Nearby and Environmental Trends (MAGNET)

Benedetta Vulcani, Gabriella De Lucia, Daria Zakharova +28

[ABRIDGED] Galaxy evolution is shaped by internal and external mechanisms that regulate the baryon cycle and star formation activity. We present a theoretical framework based on th…

astro-ph.GA2026

The stellar-to-halo mass relation of central galaxies across three orders of halo mass

Victoria Toptun, Paola Popesso, Ilaria Marini +9

The stellar content of galaxies is tightly connected to the mass and growth of their host dark matter halos. Observational constraints on this relation remain limited, particularly…

astro-ph.GA2025

Unveiling Chemical Enrichment in the Abell 2029 Core with XRISM, XMM-Newton, and Chandra

Arnab Sarkar, Eric D. Miller, Brian McNamara +6

We present new measurements of the chemical abundance pattern in the core of the nearby galaxy cluster Abell~2029, based on XRISM observations with Resolve (37 ks) and Xtend (500 k…

astro-ph.GA2025

Measuring the Temperature of Extremely Hot Shock-Heated Gas in the Major Merger MACS J0717.5+3745 With Relativistic Corrections to the Sunyaev-Zel'dovich Effect

Benjamin J. Vaughan, Jack Sayers, Locke Spencer +10

The conversion of gravitational potential to kinetic energy results in an intracluster medium (ICM) gas with a characteristic temperature near 10 keV in the most massive galaxy clu…

astro-ph.GA2025★ 3 cited

Extreme AGN feedback in the fossil galaxy group SDSSTG 4436

D. Eckert, F. Gastaldello, L. Lovisari +20

Supermassive black hole feedback is the currently favoured mechanism to regulate the star formation rate of galaxies and prevent the formation of ultra-massive galaxies ($M_\star>1…

astro-ph.GA2025★ 4 cited

The eROSITA view on the halo mass-temperature relation: From low-mass groups to massive clusters

V. Toptun, P. Popesso, I. Marini +15

Galaxy groups and clusters are among the best probes of structure formation and growth in a cosmological context. Most of their baryonic component is dominated by the intracluster…

astro-ph.GA2025★ 2 cited

Relighting the fire in Hickson Compact Group (HCG) 15: magnetised fossil plasma revealed by the SKA Pathfinders & Precursors

C. J. Riseley, T. Vernstrom, L. Lovisari +26

In the context of the life cycle and evolution of active galactic nuclei (AGN), the environment plays an important role. In particular, the over-dense environments of galaxy groups…

astro-ph.GA2025

Understanding entropy in massive halos: The role of baryon decoupling

S. Molendi, M. Balboni, I. Bartalucci +8

The goal of the work presented in this paper is to use observed entropy profiles to infer constraints on the accretion process in massive halos. We compare entropy profiles from va…

astro-ph.GA2024★ 10 cited

Average X-ray properties of galaxy groups. From Milky Way-like halos to massive clusters

P. Popesso, I. Marini, K. Dolag +20

This study examines the average X-ray properties of massive halos at z< 0.2, covering the largest halo mass range to date, from Milky Way-like halos to massive clusters. The analys…

astro-ph.GA2024★ 11 cited

The hot gas mass fraction in halos. From Milky Way-like groups to massive clusters

P. Popesso, A. Biviano, I. Marini +21

By using eROSITA data in the eFEDS area, we provide a measure of the hot gas fraction vs. halo mass relation over the largest halo mass range, from Milky Way-sized halos to massive…

astro-ph.GA2024★ 7 cited

The perils of stacking optically selected groups in eROSITA data. The Magneticum perspective

P. Popesso, I. Marini, K. Dolag +23

Hydrodynamical simulation predictions are often compared with observational data without fully accounting for systematics and biases specific to observational techniques. Using the…

astro-ph.GA2024

Metal enrichment: the apex accretor perspective

S. Molendi, S. Ghizzardi, S. De Grandi +7

Aims. The goal of this work is to devise a description of the enrichment process in large-scale structure that explains the available observations and makes predictions for future…

astro-ph.GA2023★ 8 cited

Weak-Lensing Analysis of the Complex Cluster Merger Abell 746 with Subaru/Hyper Suprime-Cam

Kim HyeongHan, Hyejeon Cho, M. James Jee +15

The galaxy cluster Abell 746 (A746; =0.214), featuring a double radio relic system, two isolated radio relics, a possible radio halo, disturbed V-shaped X-ray emission, and intr…

astro-ph.GA2022★ 5 cited

The cavity of 3CR 196.1: H emission spatially associated with an X-ray cavity

A. Jimenez-Gallardo, E. Sani, F. Ricci +20

We present a multifrequency analysis of the radio galaxy 3CR 196.1 (), associated with the brightest galaxy of the cool core cluster CIZAJ0815.4-0303. This nearby radio…

astro-ph.GA2022

Detection of a Superluminous Spiral Galaxy in the Heart of a Massive Galaxy Cluster

Akos Bogdan, Lorenzo Lovisari, Patrick Ogle +5

It is well established that brightest cluster galaxies (BCGs), residing in the center of galaxy clusters, are typically massive and quenched galaxies with cD or elliptical morpholo…

astro-ph.GA2022★ 42 cited

The galaxy group NGC 507: newly detected AGN remnant plasma transported by sloshing

M. Brienza, L. Lovisari, K. Rajpurohit +15

Jets from active galactic nuclei (AGN) are known to recurrently enrich their surrounding medium with mildly-relativistic particles and magnetic fields. Here, we present a detailed…

astro-ph.GA2021★ 20 cited

The unusually weak and exceptionally steep radio relic in Abell 2108

Gerrit Schellenberger, Simona Giacintucci, Lorenzo Lovisari +9

Mergers between galaxy clusters often drive shocks into the intra cluster medium (ICM), the effects of which are sometimes visible via temperature and density jumps in the X-ray, a…

astro-ph.GA2021★ 47 cited

The intra-cluster magnetic field in the double relic galaxy cluster Abell 2345

C. Stuardi, A. Bonafede, L. Lovisari +5

Magnetic fields are ubiquitous in galaxy clusters, yet their radial profile, power spectrum, and connection to host cluster properties are poorly known. Merging galaxy clusters hos…

astro-ph.GA2019★ 24 cited

Extended X-ray study of M49: the frontier of the Virgo Cluster

Y. Su, R. P. Kraft, P. E. J. Nulsen +10

The M49 group, resident outside the virial radius of the Virgo cluster, is falling onto the cluster from the south. We report results from deep {\sl XMM-Newton} mosaic observations…

astro-ph.GA2019★ 20 cited

Projection effects in galaxy cluster samples: insights from X-ray redshifts

M. E. Ramos-Ceja, F. Pacaud, T. H. Reiprich +3

Up to now, the largest sample of galaxy clusters selected in X-rays comes from the ROSAT All-Sky Survey (RASS). Although there have been many interesting clusters discovered with t…

astro-ph.GA2019★ 20 cited

Expanding the Sample: The Relationship Between the Black Hole Mass of BCGs and the Total Mass of Galaxy Clusters

Frederika Phipps, Akos Bogdan, Lorenzo Lovisari +3

Supermassive Black Holes (BHs) residing in brightest cluster galaxies (BCGs) are overly massive when considering the local relationships between the BH mass and stellar bulge mass…

astro-ph.GA2019★ 210 cited

RELICS: Reionization Lensing Cluster Survey

Dan Coe, Brett Salmon, Marusa Bradac +54

Large surveys of galaxy clusters with the Hubble and Spitzer Space Telescopes, including CLASH and the Frontier Fields, have demonstrated the power of strong gravitational lensing…

astro-ph.GA2018★ 3 cited

Detection of a Star Forming Galaxy in the Center of a Low-Mass Galaxy Cluster

Akos Bogdan, Lorenzo Lovisari, Orsolya E. Kovacs +4

Brightest Cluster Galaxies (BCGs) residing in the centers of galaxy clusters are typically quenched giant ellipticals. A recent study hinted that star-forming galaxies with large d…

astro-ph.GA2018★ 39 cited

RELICS: Strong Lensing Analysis of MACS J0417.5-1154 and Predictions for Observing the Magnified High-Redshift Universe with JWST

Guillaume Mahler, Keren Sharon, Carter Fox +37

Strong gravitational lensing by clusters of galaxies probes the mass distribution at the core of each cluster and magnifies the universe behind it. MACS J0417.5-1154 at z=0.443 is…