Discovery of depressions in the X-ray emission of the distant galaxy cluster RBS797 in a CHANDRA observation
Loading...
Official URL
Full text at PDC
Publication date
2001
Advisors (or tutors)
Editors
Journal Title
Journal ISSN
Volume Title
Publisher
EDP Sciencies
Citation
Cavaliere, A. and Fusco-Femiano, R., 1976, A&A 49, 137
Churazov, E., Brüggen, M., Kaiser, C. R., Böhringer, H., and Forman, W., 2000, astro-ph/0008215
Condon, J. J., Cotton, W. D., Greisen, E. W., Yin, Q. F., Perley, R. A., Taylor, G. B., and Broderick, J. J., 1998, AJ 115, 1693
David, L. P., Nulsen, P. E. J., McNamara, B. R., and et al., 2000, astro-ph/0010224
Dickey, J. M. and Lockman, F. J., 1990, ARA&A 28, 215
Ettori, S. and Fabian, A. C., 1999, MNRAS 305, 834
Fabian, A. C., 2001, Proc. of the XXI Moriond Conf: Galaxy Clusters and the High Redshift Universe Observed in X-rays, Neumann D.M. (ed.), in press
Fabian, A. C., Sanders, J. S., Ettori, S., Taylor, G. B., Allen, S. W., Crawford, C. S., Iwasawa, K., Johnstone, R. M., and Ogle, P. M., 2000, MNRAS 318, L65
Fischer, J., Hasinger, G., Schwope, A. D., Brunner, H., Boller, T., Trümper, J., Voges, W., and Neizvestny, S., 1998, Astronomische Nachrichten 319, 347
Heinz, S., Reynolds, C. S., and Begelman, M. C., 1998, ApJ 501, 126
Huang, Z. and Sarazin, C. L., 1998, ApJ 496, 728
Kaastra, J. S. and Mewe, R., 1993, A&AS 97, 443
Liedahl, D. A., Osterheld, A. L., and Goldstein, W. H., 1995, ApJ 438, L115
McNamara, B. R., 2001, Proc. of the IAP 2000 conference “Constructing the Universe with Clusters of Galaxies”, Durret F. and Gerbal D. (eds.),astro-ph/0012331
McNamara, B. R., Wise, M., Nulsen, P. E. J., David, L. P., Sarazin, C. L., Bautz, M., Markevitch, M., Vikhlinin, A., Forman, W. R., Jones, C., and Harris, D. E., 2000, ApJ 534, L135
Mohr, J. J., Mathiesen, B., and Evrard, A. E., 1999, ApJ 517, 627
Reynolds, C. S., Heinz, S., and Begelman, M. C., 2001, ApJ 549, L179
Sarazin, C. L., 2001, Proc. of the XXI Moriond Conf: Galaxy Clusters and the High Redshift Universe Observed in X-rays, Neumann D.M. (ed.), in press
Schindler, S., 1996, MNRAS 280, 309
Schindler, S., 1999, A&A 349, 435
Schwope, A., Hasinger, G., Lehmann, I., Schwarz, R., Brunner, H., Neizvestny, S., Ugryumov, A., Balega, Y., Trümper, J., and Voges, W., 2000, Astronomische Nachrichten 321, 1
Abstract
We present CHANDRA observations of the X-ray luminous, distant galaxy cluster RBS797 at z = 0.35. In the central region the X-ray emission shows two pronounced X-ray minima, which are located opposite to each other with respect to the cluster centre. These depressions suggest an interaction between the central radio galaxy and the intra-cluster medium, which would be the first detection in such a distant cluster. The minima are symmetric relative to the cluster centre and very deep compared to similar features found in a few other nearby clusters. A spectral and morphological analysis of the overall cluster emission shows that RBS797 is a hot cluster (T = 7.7(-1.0)(+1.2) keV) with a total mass of M-tot(r(500)) = 6.5(-1.2)(+1.6) x 10(14) M-..
Description
We thank Doug Burke and Valeri Hambaryan for help with the data analysis and Phil James for carefully reading the manuscript.