Zobrazeno 1 - 10
of 11
pro vyhledávání: '"O'Sullivan, Ewan"'
Autor:
Grossová, Romana, Werner, Norbert, Massaro, Francesco, Lakhchaura, Kiran, Plšek, Tomáš, Gabányi, Krizstina, Rajpurohit, Kamlesh, Canning, Rebecca E. A., Nulsen, Paul, O'Sullivan, Ewan, Allen, Steven W., Fabian, Andrew
Many massive early-type galaxies host central radio sources and hot X-ray atmospheres indicating the presence of radio-mechanical active galactic nucleus (AGN) feedback. The duty cycle and detailed physics of the radio-mode AGN feedback is still a ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=arXiv_______::d7cbbc9a328be248d36064da37e6fb7e
http://arxiv.org/abs/2111.02430
http://arxiv.org/abs/2111.02430
Autor:
O'Sullivan, Ewan, Schellenberger Gerrit, Burke, Douglas, Sun, Ming, Vrtilek, Jan M, David, Laurence P, Sarazin, Craig
We present deep Chandra, XMM-Newton, GMRT and Halpha observations of the high-velocity group-group merger NGC 6338. X-ray imaging and spectral mapping show that as well as trailing tails of cool, enriched gas, the two cores are embedded in a ~250 kpc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6709eb285c67ed0c86b0e5d3d685cbb1
For a sample of 9 well-studied giant ellipticals we compare the projected radial distribution of their red and blue globular cluster (GC) subpopulations with their host galaxy stellar and X-ray surface brightness profiles. We support previous finding
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bbf401c4372297ace5e9b992349a65c1
Autor:
O'Sullivan, Ewan, Giacintucci, Simona, Babul, Arif, Raychaudhury, Somak, Venturi, Tiziana, Bildfell, Chris, Mahdavi, Andisheh, Oonk, J. B. R., Murray, Norman, Hoekstra, Henk, Donahue, Megan
IRAS 09104+4109 is a rare example of a dust enshrouded type 2 QSO in the centre of a cool-core galaxy cluster. Previous observations of this z=0.44 system showed that as well as powering the hyper-luminous infrared emission of the cluster-central gal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b7ab2d48408bced86525cf90a85c0cbe
Autor:
O'Sullivan, Ewan, Worrall, Diana M., Birkinshaw, Mark, Trinchieri, Ginevra, Wolter, Anna, Zezas, Andreas, Giacintucci, Simona
Using observations from the Chandra and XMM-Newton X-ray observatories, we examine the interaction between the intra-group medium and central radio source in the nearby NGC 4261 galaxy group. We confirm the presence of cavities associated with the ra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::54e8598798b0f0ff642259849bf72e9f
http://arxiv.org/abs/1106.2449
http://arxiv.org/abs/1106.2449
Autor:
O'Sullivan, Ewan, Giacintucci, Simona, David, Laurence P., Vrtilek, Jan M., Raychaudhury, Somak
We use a Chandra observation of the poor cluster AWM4 to map the temperature and abundance of the intra-cluster medium, so as to examine the influence of the central radio galaxy on its environment. While the cluster core is generally enriched to nea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::869d51548c170eb0388fbb4d0ab68b67
http://arxiv.org/abs/1010.0610
http://arxiv.org/abs/1010.0610
Autor:
David, Laurence P., O'Sullivan, Ewan, Jones, Christine, Giacintucci, Simona, Vrtilek, Jan, Raychaudhury, Somak, Nulsen, Paul E. J., Forman, William, Sun, Ming, Donahue, Megan
A deep Chandra observation of the X-ray bright group, NGC 5044, shows that the central region of this group has been strongly perturbed by repeated AGN outbursts. These recent AGN outbursts have produced many small X-ray cavities, cool filaments and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::603e412eeaf933412e0c7110a9570627
http://arxiv.org/abs/1010.0650
http://arxiv.org/abs/1010.0650
Autor:
O'Sullivan, Ewan, Giacintucci, Simona, David, Laurence P., Vrtilek, Jan M., Raychaudhury, Somak
Using observations from the Chandra X-ray Observatory and Giant Metrewave Radio Telescope, we examine the interaction between the intracluster medium and central radio source in the poor cluster AWM 4. In the Chandra observation a small cool core or
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ae87a4684d2970556504aa70d5902626
Autor:
Gitti, Myriam, O'Sullivan, Ewan, Giacintucci, Simona, David, Laurence P., Vrtilek, Jan, Raychaudhury, Somak, Nulsen, Paul E. J.
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 possess clear, small X-ray cavities in the inner regions. This is part of a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9795425d5019ff2975566df009725645
Autor:
Romana Grossová, Norbert Werner, Francesco Massaro, Kiran Lakhchaura, Tomáš Plšek, Krisztina Gabányi, Kamlesh Rajpurohit, Rebecca E. A. Canning, Paul Nulsen, Ewan O’Sullivan, Steven W. Allen, Andrew Fabian
Many massive early-type galaxies host central radio sources and hot X-ray atmospheres indicating the presence of radio-mechanical active galactic nucleus (AGN) feedback. The duty cycle and detailed physics of the radio-mode AGN feedback is still a ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20b2041f97463a87439d91a9ab1e092e