Zobrazeno 1 - 10
of 130
pro vyhledávání: '"William G. Mathews"'
Autor:
William G. Mathews
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 506:2030-2040
An X-ray analysis revisits deep Chandra observations of the flamboyantly disturbed atmosphere in the galaxy/group NGC 4636. A known pair of faint cavities about 2–3.5 kpc from the centre is visible in azimuthally averaged Chandra data. These may be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9dd89e03be404b9fec39a13c630af56e
https://doi.org/10.1093/mnras/stab1745
https://doi.org/10.1093/mnras/stab1745
Autor:
Alastair C. Edge, Bradford Snios, Michael W. Wise, William G. Mathews, Robert Laing, Martin J. Hardcastle, Paul Nulsen, Ryan T. Duffy, M. N. de Vries, Leith Godfrey, Chris Carilli, D. Rafferty, Mark Birkinshaw, Judith H. Croston, Richard A. Perley, Brian R. McNamara, John McKean, Diana M Worrall
Publikováno v:
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 2018, ' The X-ray ribs within the cocoon shock of Cygnus A ', Monthly Notices of the Royal Astronomical Society, vol. 476, no. 4, pp. 4848-4860 . https://doi.org/10.1093/mnras/sty549
Monthly Notices of the Royal Astronomical Society, 476(4), 4848-4860. Oxford University Press
Monthly notices of the Royal Astronomical Society, 2018, Vol.476(4), pp.4848-4860 [Peer Reviewed Journal]
Monthly Notices of the Royal Astronomical Society, 476(4), 4848-4860. Oxford University Press
Monthly notices of the Royal Astronomical Society, 2018, Vol.476(4), pp.4848-4860 [Peer Reviewed Journal]
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fcb8a6ed24a28890a7d9750a4ee79e39
https://research.rug.nl/en/publications/d07cb9a8-c6d6-4512-a36a-b2d6420193b1
https://research.rug.nl/en/publications/d07cb9a8-c6d6-4512-a36a-b2d6420193b1
Autor:
Martin J. Hardcastle, Robert A. Laing, Paul Nulsen, Martijn de Vries, David Rafferty, Leith Godfrey, Mark Birkinshaw, Judith H. Croston, Ryan T. Duffy, Michael W. Wise, Brian R. McNamara, Chris L. Carilli, John McKean, Richard A. Perley, Alastair C. Edge, Bradford Snios, Andrew J. Young, Daniel E. Harris, William G. Mathews, Diana M Worrall, Ralph P. Kraft
Publikováno v:
Snios, B, Nulsen, P E J, Wise, M W, Vries, M D, Birkinshaw, M, Worrall, D M, Duffy, R T, Kraft, R P, McNamara, B R, Carilli, C, Croston, J H, Edge, A C, Godfrey, L E H, Hardcastle, M J, Harris, D E, Laing, R A, Mathews, W G, McKean, J P, Perley, R A, Rafferty, D A & Young, A J 2018, ' The Cocoon Shocks of Cygnus A : Pressures and Their Implications for the Jets and Lobes ', Astrophysical Journal, vol. 855, no. 1, pp. 855-871 . https://doi.org/10.3847/1538-4357/aaaf1a
Astrophysical Journal, 855(1):71. IOP Publishing Ltd.
Astrophysical journal, 2018, Vol.855(1), pp.71 [Peer Reviewed Journal]
Astrophysical Journal, 855(1):71. IOP Publishing Ltd.
Astrophysical journal, 2018, Vol.855(1), pp.71 [Peer Reviewed Journal]
We use 2.0 Msec of Chandra observations to investigate the cocoon shocks of Cygnus A and some implications for its lobes and jet. Measured shock Mach numbers vary in the range 1.18-1.66 around the cocoon. We estimate a total outburst energy of $\sime
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d37f63b9c35fb524c635d7bfc36f13e8
Autor:
William G. Mathews, Laurence P. David, Alexandre Amblard, Myriam Gitti, Fabrizio Brighenti, Pasquale Temi, Massimo Gaspari
We present new ALMA CO(2--1) observations of two well studied group-centered elliptical galaxies: NGC~4636 and NGC~5846. In addition, we include a revised analysis of Cycle 0 ALMA observations of the central galaxy in the NGC~5044 group that has been
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::359a0f1be20f963bd50a01174d140ebf
http://hdl.handle.net/20.500.12386/29230
http://hdl.handle.net/20.500.12386/29230
OVI absorption in quasar spectra caused by intervening circumgalactic atmospheres suggests a downturn in the atmospheric column density in sightlines passing beyond about 100 kpc from central star-forming galaxies. This turnover supports the hypothes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::78df3044a844528a6e8502d91518fb6e
http://arxiv.org/abs/1708.07140
http://arxiv.org/abs/1708.07140
Autor:
Laura Di Gesu, William G. Mathews, Dominique Eckert, David A. Buote, Fabrizio Brighenti, Mariachiara Rossetti, Fabio Gastaldello, Philip J. Humphrey, Stefano Ettori, Elke Roediger, Simona Giacintucci, Simona Ghizzardi, Marisa Girardi
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dc1ab8b304a88c0b36c8548c79644201
http://www.openaccessrepository.it/record/17212/files/1304.pdf
http://www.openaccessrepository.it/record/17212/files/1304.pdf
Publikováno v:
The Astrophysical Journal. 705:1672-1685
We describe two-dimensional gasdynamical computations of the X-ray emitting gas in the rotating elliptical galaxy NGC 4649 that indicate an inflow of about one solar mass per year at every radius. Such a large instantaneous inflow cannot have persist
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6466984c51435b588290384ba4fa9f03
https://doi.org/10.1088/0004-637x/705/2/1672
https://doi.org/10.1088/0004-637x/705/2/1672
Publikováno v:
The Astrophysical Journal. 695:1-11
We discuss infrared Spitzer observations of early type galaxies in the SAURON sample at 24, 60 and 170 microns. When compared with 2MASS Ks band luminosities, lenticular (S0) galaxies exhibit a much wider range of mid to far-infrared luminosities the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::71249e323e70a1aeeb17e2c0085b740a
https://doi.org/10.1088/0004-637x/695/1/1
https://doi.org/10.1088/0004-637x/695/1/1
Publikováno v:
The Astrophysical Journal. 673:L17-L20
The core of the relaxed cluster AWM 4 is characterized by a unique combination of properties which defy a popular scenario for ANG heating of cluster cores. A flat inner temperature profile is indicative of a past, major heating episode which complet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6c0fe5df707dfd63b56501522752ff1e
https://doi.org/10.1086/527472
https://doi.org/10.1086/527472
Publikováno v:
The Astrophysical Journal. 672:244-251
We describe photometry at mid-infrared passbands (1.2 - 24 microns) for a sample of 18 elliptical galaxies. All surface brightness distributions resemble de Vaucouleurs profiles, indicating that most of the emission arises from the photospheres or ci
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2f94aa05e530404667a3de5a36c50c3e
https://doi.org/10.1086/523668
https://doi.org/10.1086/523668