activity
20012025
most citedA galaxy lacking dark matter

448 citations · 4.1k across the 101 of their papers we have counts for

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Showing 2021 · astro-ph.GAShow all

7 papers · 2 filters

astro-ph.GA2021★ 17 cited

The Complete Local Volume Groups Sample -- IV. Star formation and gas content in group-dominant galaxies

Konstantinos Kolokythas, Sravani Vaddi, Ewan O'Sullivan +5

Using multi-band data we examine the star formation activity of the nearby group-dominant early-type galaxies of the Complete Local-volume Groups Sample (CLoGS), and the relation b…

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

1321+045: a Compact Steep Spectrum radio source in a cool-core galaxy cluster

Ewan O'Sullivan, Magdalena Kunert-Bajraszewska, Aneta Siemiginowska +4

Cluster-central gigahertz peak and compact steep spectrum (CSS) sources offer an opportunity to study the earliest phases of AGN feedback, but few have yet been examined in detail.…

astro-ph.GA2021★ 14 cited

Molecular gas along the old radio jets of the cluster-central type 2 quasar IRAS 09104+4109

Ewan O'Sullivan, Françoise Combes, Arif Babul +4

We present Northern Extended Millimeter Array (NOEMA) CO(2-1) maps of the z=0.4418 cluster-central QSO IRAS 09104+4109, which trace ~4.5x10^10 Msol of molecular gas in and around t…

astro-ph.GA2021

An XMM-Newton Early-type Galaxy Atlas

Nazma Islam, Dong-Woo Kim, Kenneth Lin +9

The distribution of hot interstellar medium in early-type galaxies bears the imprint of the various astrophysical processes it underwent during its evolution. The X-ray observation…

astro-ph.GA2021★ 132 cited

Feedback from Active Galactic Nuclei in Galaxy Groups

Dominique Eckert, Massimo Gaspari, Fabio Gastaldello +2

The co-evolution between supermassive black holes and their environment is most directly traced by the hot atmospheres of dark matter halos. Cooling of the hot atmosphere supplies…

astro-ph.GA2021★ 1 cited

A first Chandra view of the cool core cluster A1668: offset cooling and AGN feedback cycle

Thomas Pasini, Myriam Gitti, Fabrizio Brighenti +4

We present a multi-wavelength analysis of the galaxy cluster A1668, performed by means of new EVLA and Chandra observations and archival H data. The radio images exhibit a small…