Measurement of temperature profiles of AMW 7 and A2104 within the virial radii
Abstract
We present results on AWM7 and A2104 observed with Suzaku. We measured significant asymmetric structure in electron temperature of AWM7:2.90+1.06-0.99 keV in the east and 1.11+0.62-0.38 keV in the south. In A2104, we measured temperature drop from 8.11+0.35-0.34 keV to 2.33+2.62-0.71 keV at 1.2r200. We also looked into entropy, gravitational mass, and equilibrational timescale in the cluster outskirt. We found tei > telapsed in 7'-11'.5, suggesting a significant difference between Te and Ti through entropy profile shows hydrostatic equilibrium in the same region. Gravitational mass of A2104 is 1.18+/-0.63×1015Msolar. It is consistent with the optical result, and gas mass fraction is 3.17+0.44-0.49% at 10' which is close to r200 which is much lower than the value considered from LCDM prediction.
- Publication:
-
Suzaku 2011: Exploring the X-ray Universe: Suzaku and Beyond
- Pub Date:
- March 2012
- DOI:
- 10.1063/1.3696231
- Bibcode:
- 2012AIPC.1427..336H