Institute of Astronomy

Dr Stephen Walker

E-mail: swalker@ast.cam.ac.uk

Personal Homepage

Office: Hoyle H54
Office Tel: 0
More Info (Internal)

Preprints
Publications

Research

Galaxy clusters: cluster outskirts, merging galaxy clusters, large scale gas motions, sound waves and cavities in the ICM due to AGN feedback, cooling flows, inverse Compton emission in clusters.

Selected papers

As first author:

Large scale gas sloshing out to half the virial radius in the strongest cool core REXCESS galaxy cluster, RXJ2014.8-2430

S. A. Walker, A. C. Fabian, J. S. Sanders, 2014, MNRAS in press, (arXiv:1402.6894)

An XMM-Newton view of the merging activity in the Centaurus cluster

S. A. Walker, A. C. Fabian, J. S. Sanders, 2013, MNRAS, 435, 3221, (arXiv:1308.2090)

X-ray exploration of the outskirts of the nearby Centaurus cluster using Suzaku and Chandra

S. A. Walker, A. C. Fabian, J. S. Sanders, A. Simionescu, Y. Tawara, 2013, MNRAS, 432, 554, (arXiv:1303.4240)

Galaxy cluster outskirts: a universal entropy profile for relaxed clusters?

S. A. Walker, A. C. Fabian, J. S. Sanders, M. R. George, 2012, MNRAS, 427, L45-L49 (arXiv:1208.5950)

Further X-ray observations of the galaxy cluster PKS 0745-191 to the virial radius and beyond 

S. A. Walker, A. C. Fabian, J. S. Sanders, M. R. George, 2012, MNRAS, 424, 1826 (arXiv:1205.2276)

X-ray observations of the galaxy cluster Abell 2029 to the virial radius

S. A. Walker, A. C. Fabian, J. S. Sanders, M. R. George, Y. Tawara, 2012, MNRAS,422, 3503 (arXiv:1203.0486)

As co-author:

X-ray mapping the outer regions of galaxy clusters at z= 0.23 and 0.45

Q. Daniel Wang and Stephen Walker, 2014, MNRAS in press (arXiv:1401.6205)

The X-ray coronae of the two brightest galaxies in the Coma cluster

J. S. Sanders, A. C. Fabian, M. Sun, E. Churazov, A. Simionescu, S. A. Walker, N. Werner, 2014, MNRAS in press (arXiv:1401.3131)

Linear structures in the core of the Coma cluster

J. S. Sanders, A. C. Fabian, E. Churazov, A. A. Schekochihin, A. Simionescu, S. A. Walker, N. Werner, 2013, Science, Vol. 341 no. 6152 pp. 1365-1368 (arXiv:1309.4866)

Thermodynamics of the Coma Cluster Outskirts 

A. Simionescu, N. Werner, O. Urban, S. W. Allen, A. C. Fabian, A. Mantz, K. Matsushita, P. E. J. Nulsen, J. S. Sanders, T. Sasaki, T. Sato, Y. Takei, S. A. Walker, 2013, ApJ, 775, (arXiv:1302.4140)

 

Selected Posters

XMM-Newton 2012 Science Workshop: Galaxy Clusters as Giant Cosmic Laboratories (ESAC, Madrid, Spain 21st - 23rd May 2012) - Exploring the outskirts of the galaxy clusters Abell 2029 and PKS 0745-191 to the virial radius

Page last updated: 28 February 2014 at 11:26