Research

Galaxy cluster formation and the study of galaxy cluster outskirts using data from the Suzaku telescope.

My reseach currently focuses on the outskirts of galaxy clusters Abell 2029, PKS 0745-191 and the Centaurus cluster using Suzaku observations. Please see my personal homepage for more details.

Selected papers

As first author:

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, MNRAS in press, 2013, (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:

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, (arXiv:1302.4140)

Selected Posters

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