Zobrazeno 1 - 10
of 294
pro vyhledávání: '"Sakelliou, I."'
The nearby cluster Abell 194 hosts two luminous, distorted radio galaxies. Both reside within the cluster's core region, being separated in projection by only 100 kpc. It is often suggested that tailed radio galaxies such as these reside in clusters
Externí odkaz:
http://arxiv.org/abs/0709.2133
Autor:
Finoguenov, A., Guzzo, L., Hasinger, G., Scoville, N. Z., Aussel, H., Boehringer, H., Brusa, M., Capak, P., Cappelluti, N., Comastri, A., Giodini, S., Griffiths, R. E., Impey, C., Koekemoer, A. M., Kneib, J. -P., Leauthaud, A., Fevre, O. Le, Lilly, S., Mainieri, V., Massey, R., McCracken, H. J., Mobasher, B., Murayama, T., Peacock, J. A., Sakelliou, I., Schinnerer, E., Silverman, J. D., Smolcic, V., Taniguchi, Y., Tasca, L., Taylor, J. E., Trump, J. R., Zamorani, G.
We present the results of a search for galaxy clusters in the first 36 XMM-Newton pointings on the COSMOS field. We reach a depth for a total cluster flux in the 0.5-2 keV band of 3x10-15 ergs cm-2 s-1, having one of the widest XMM-Newton contiguous
Externí odkaz:
http://arxiv.org/abs/astro-ph/0612360
Autor:
Smolcic, V., Schinnerer, E., Finoguenov, A., Sakelliou, I., Carilli, C. L., Botzler, C. S., Brusa, M., Scoville, N., Ajiki, M., Capak, P., Guzzo, L., Hasinger, G., Impey, C., Jahnke, K., Kartaltepe, J. S., McCracken, H. J., Mobasher, B., Murayama, T., Sasaki, S. S., Shioya, Y., Taniguchi, Y., Trump, J. R.
We have identified a complex galaxy cluster system in the COSMOS field via a wide angle tail (WAT) radio galaxy consistent with the idea that WAT galaxies can be used as tracers of clusters. The WAT galaxy, CWAT-01, is coincident with an elliptical g
Externí odkaz:
http://arxiv.org/abs/astro-ph/0610921
Autor:
Sakelliou, I., Acreman, D. M., Hardcastle, M. J., Merrifield, M. R., Ponman, T. J., Stevens, I. R.
Publikováno v:
Mon.Not.Roy.Astron.Soc. 360 (2005) 1063-1068
We present XMM-Newton observations of the wake-radiogalaxy system 4C34.16, which shows a cool and dense wake trailing behind 4C34.16's host galaxy. A comparison with numerical simulations is enlightening, as they demonstrate that the wake is produced
Externí odkaz:
http://arxiv.org/abs/astro-ph/0504420
Publikováno v:
Mon.Not.Roy.Astron.Soc.359:1007-1021,2005
We have observed the prototypical wide-angle tail radio galaxy 3C465 with Chandra and XMM-Newton. X-ray emission is detected from the active nucleus and the inner radio jet, as well as a small-scale, cool component of thermal emission, a number of th
Externí odkaz:
http://arxiv.org/abs/astro-ph/0502575
Publikováno v:
Mon.Not.Roy.Astron.Soc. 358 (2005) 1394-1404
We present Chandra and VLA observations of two galaxy clusters, Abell 160 and Abell 2462, whose brightest cluster galaxies (BCGs) host wide angle tailed radio galaxies (WATs). We search for evidence of interactions between the radio emission and the
Externí odkaz:
http://arxiv.org/abs/astro-ph/0501432
Autor:
Hardcastle, M. J., Sakelliou, I.
Publikováno v:
Mon.Not.Roy.Astron.Soc. 349 (2004) 560
Wide-angle tail radio galaxies (WATs) are an uncommon class of radio sources with luminosities near the FRI/FRII break, and are usually associated with central cluster galaxies. Their defining characteristic when imaged sensitively at high resolution
Externí odkaz:
http://arxiv.org/abs/astro-ph/0312245
Autor:
Sakelliou, I., Peterson, J. R., Tamura, T., Paerels, F. B. S., Kaastra, J. S., Belsole, E., Boehringer, H., Branduardi-Raymont, G., Ferrigno, C., Herder, J. W. den, Kennea, J., Mushotzky, R. F., Vestrand, W. T., Worrall, D. M.
We present high-resolution X-ray spectroscopic observations of M87 with the Reflection Grating Spectrometers on XMM-Newton. We detect strong K-shell line emission from N, O, Ne, Mg, some emission from He-like Si, a fully resolved set of Fe L-shell em
Externí odkaz:
http://arxiv.org/abs/astro-ph/0206249
Autor:
Guedel, M., Audard, M., Boggende, A. J. den, Brinkman, A. C., Herder, J. W. den, Kaastra, J. S., Mewe, R., Raassen, A. J. J., de Vries, C., Behar, E., Cottam, J., Kahn, S. M., Paerels, F. B. S., Peterson, J. M., Rasmussen, A. P., Sako, M., Branduardi-Raymont, G., Sakelliou, I., Erd, C.
First results from high-resolution coronal spectroscopy with the {\it XMM-Newton} Reflection Grating Spectrometers (RGS) are reviewed. Five stellar systems (HR 1099, Capella, Procyon, YY Gem, AB Dor) have been observed. The emphasis of the present pa
Externí odkaz:
http://arxiv.org/abs/astro-ph/0011573
Autor:
Audard, M., Guedel, M., Boggende, A. J. den, Brinkman, A. C., Herder, J. W. den, Kaastra, J. S., Mewe, R., Raassen, A. J. J., de Vries, C., Behar, E., Cottam, J., Kahn, S. M., Paerels, F. B. S., Peterson, J. M., Rasmussen, A. P., Sako, M., Branduardi-Raymont, G., Sakelliou, I., Erd, C.
First results from high-resolution coronal spectroscopy of flares with the Reflection Grating Spectrometers on board the \textit{XMM-Newton} satellite are reviewed. Rotational modulation in the X-ray light curve of HR 1099 is discussed. Results from
Externí odkaz:
http://arxiv.org/abs/astro-ph/0011574