NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-07-16 T10:06:27 PDT
Help | Comment | NED Home

For refcode 2002A&A...383..773I:
Retrieve 105 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by European Southern Observatory (ESO). Reproduced by permission
2002A&A...383..773I A new measurement of the X-ray temperature function of clusters of galaxies Y. Ikebe, T. H. Reiprich, H. Bohringer, Y. Tanaka, and T. Kitayama Max-Planck-Institut fur extraterrestrische Physik, Postfach 1312, 85741 Garching, Germany Department of Astronomy, University of Virginia, PO Box 3818, 530 McCormick Road, Charlottesville, VA 22903-0818, USA Institute of Space and Astronautical Science, Yoshinodai 3-1-1, Sagamihara, Kanagawa 229-8510, Japan Department of Physics, Toho University, Miyama, Funabashi, Chiba 274-8510, Japan Received 7 June 2001/Accepted 11 December 2001 Abstract. We present a newly measured X-ray temperature function of galaxy clusters using a complete flux-limited sample of 61 clusters. The sample is constructed with the total survey area of 8.14 steradians and the flux limit of 1.99 x 10^-11^ ergs s^-1^ cm^-2^ in the 0.1-2.4 keV band. X-ray temperatures and fluxes of the sample clusters were accurately measured with ASCA and ROSAT data. The derived temperature function covers an unprecedentedly wide temperature range of 1.4-11 keV. By fitting these data with theoretically predicted temperature functions given by the Press-Schechter formalism together with a recent formation approximation and the CDM power spectrum, we obtained tight and individual constraints on {OMEGA}_m,0_ and {sigma}_8_. We also employed the Formation-Epoch model in which the distribution in the formation epoch of clusters as well as the temperature evolution are taken into account, showing significantly different results. Systematics caused by the uncertainty in the mass-temperature relation are studied and found to be as large as the statistical errors. Key words: cosmology: observations - cosmological: parameters - X-rays: galaxies: clusters
Retrieve 105 NED objects in this reference.
Please click here for ADS abstract

Back to NED Home