Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Mathews, W. G."'
Autor:
Duffy, R. T., Worrall, D. M., Birkinshaw, M., Nulsen, P. E. J., Wise, M. W., de Vries, M. N., Snios, B., Mathews, W. G., Perley, R. A., Hardcastle, M. J., Rafferty, D. A., McNamara, B. R., Edge, A. C., McKean, J. P., Carilli, C. L., Croston, J. H., Godfrey, L. E. H., Laing, R. A.
We use new and archival Chandra observations of Cygnus A, totalling $\sim$1.9 Ms, to investigate the distribution and temperature structure of gas lying within the projected extent of the cocoon shock and exhibiting a rib-like structure. We confirm t
Externí odkaz:
http://arxiv.org/abs/1802.09476
Autor:
Gastaldello, F., Di Gesu, L., Ghizzardi, S., Giacintucci, S., Girardi, M., Roediger, E., Rossetti, M., Brighenti, F., Buote, D. A., Eckert, D., Ettori, S., Humphrey, P. J., Mathews, W. G.
We present a combined X-ray, optical, and radio analysis of the galaxy group IC 1860 using the currently available Chandra and XMM data, literature multi-object spectroscopy data and GMRT data. The Chandra and XMM imaging and spectroscopy reveal two
Externí odkaz:
http://arxiv.org/abs/1304.5478
Autor:
Mathews, W. G., Brighenti, F.
We describe the formation and evolution of X-ray cavities in the hot gas of galaxy clusters. The cavities are formed only with relativistic cosmic rays that eventually diffuse into the surrounding gas. We explore the evolution of cavities formed with
Externí odkaz:
http://arxiv.org/abs/0805.2441
Autor:
Mathews, W. G., Brighenti, F.
Publikováno v:
Astrophys.J.660:1137-1145,2007
We describe how AGN-produced cosmic rays form large X-ray cavities and radio lobes in the hot diffuse gas in galaxy groups and clusters. Cosmic rays are assumed to be produced in a small shocked region near the cavity center, such as at the working s
Externí odkaz:
http://arxiv.org/abs/astro-ph/0701712
Autor:
Mathews, W. G., Brighenti, F., Faltenbacher, A., Buote, D. A., Humphrey, P. J., Gastaldello, F., Zappacosta, L.
Publikováno v:
Astrophys.J.652:L17-L20,2006
The enormous range of X-ray luminosities among elliptical galaxies with similar optical luminosities can be attributed to large scatter and systematic variations in the dark halo mass determined from X-ray observations. The mean halo mass decreases s
Externí odkaz:
http://arxiv.org/abs/astro-ph/0610694
Within the cosmic framework clusters of galaxies are relatively young objects. Many of them have recently experienced major mergers. Here we investigate an equal mass merging event at z = ~0.6 resulting in a dark matter haloe of ~2.2 times 10^{14} Ms
Externí odkaz:
http://arxiv.org/abs/astro-ph/0609615
Publikováno v:
Astrophys.J.634:L137-L140,2005
Elliptical galaxies and their groups having the largest L_x/L_B lie close to the locus in the L_x,L_B diagram expected for closed systems with baryon fractions equal to the cosmic mean value, f_b = 0.16. The estimated baryon fractions for several of
Externí odkaz:
http://arxiv.org/abs/astro-ph/0511152
Publikováno v:
Astrophys.J.638:659-667,2006
The discovery of extended, approximately spherical weak shock waves in the hot intercluster gas in Perseus and Virgo has precipitated the notion that these waves may be the primary heating process that explains why so little gas cools to low temperat
Externí odkaz:
http://arxiv.org/abs/astro-ph/0511151
We present ISOPHOT P32 oversampled maps and P37/39 sparse maps, of three bright elliptical galaxies in the Virgo Cluster. The maps reach the limiting sensitivity of the ISOPHOT instrument at 60, 100, 170 and 200 microns. Two elliptical galaxies show
Externí odkaz:
http://arxiv.org/abs/astro-ph/0209597
Autor:
Mathews, W. G.
Publikováno v:
The Virginia Law Register, 1901 Dec 01. 7(8), 521-529.
Externí odkaz:
https://www.jstor.org/stable/1100506