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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 2009Show all

7 papers · 1 filter

astro-ph.CO2009★ 81 cited

Cavities and shocks in the galaxy group HCG 62 as revealed by Chandra, XMM and GMRT data

Myriam Gitti, Ewan O'Sullivan, Simona Giacintucci +4

We report on the results of an analysis of Chandra, XMM-Newton and new GMRT data of the X-ray bright compact group of galaxies HCG 62, which is one of the few groups known to posse…

astro-ph.CO2009★ 28 cited

Comparing X-ray and Dynamical Mass Profiles in the Early-Type Galaxy NGC 4636

Ria Johnson, Dalia Chakrabarty, Ewan O'Sullivan +1

We present the results of an X-ray mass analysis of the early-type galaxy NGC 4636, using Chandra data. We have compared the X-ray mass density profile with that derived from a dyn…

astro-ph.CO2009★ 2 cited

AGN Feedback in the Compact Group of Galaxies HCG 62 - as revealed by Chandra, XMM and GMRT data

M. Gitti, E. O'Sullivan, S. Giacintucci +4

As a part of an ongoing study of a sample of galaxy groups showing evidence for AGN/hot gas interaction, we report on the preliminary results of an analysis of new XMM and GMRT dat…

astro-ph.CO2009★ 2 cited

AGN feedback in galaxy groups: a joint GMRT/X-ray study

S. Giacintucci, J. M. Vrtilek, E. O'Sullivan +5

We present an ongoing study of 18 nearby galaxy groups, chosen for the availability of Chandra and/or XMM-Newton data and evidence for AGN/hot intragroup gas interaction. We have o…

astro-ph.CO2009

AGN Feedback in groups and clusters of galaxies

S. Raychaudhury, S. Giacintucci, E. O'Sullivan +5

The lack of very cool gas at the cores of groups and clusters of galaxies, even where the cooling time is significantly shorter than the Hubble time, has been interpreted as eviden…

astro-ph.CO2009★ 1 cited

A Joint GMRT/X-ray study of galaxy groups

E. O'Sullivan, S. Giacintucci, J. M. Vrtilek +4

We present results from combined low-frequency radio and X-ray studies of nearby galaxy groups. We consider two main areas: firstly, the evolutionary process from spiral-dominated,…