5 papers
Probing the gravitational potential of a nearby lensing cluster Abell 2104
H. Liang, L. Lemonon, I. Valtchanov +2
The cluster Abell 2104 is one of the lowest redshift clusters (z=0.153) known to have a gravitational lensing arc. We present detailed analysis of the cluster properties such as th…
A Radio Halo Found in the Hottest Known Cluster of Galaxies 1E0658-56
H. Liang
We report the detection of a diffuse radio halo source in the hottest known cluster of galaxies 1E0658-56 (RXJ0658-5557). The radio halo has a morphology similar to the X-ray emiss…
The enhancement and decrement of the Sunyaev-Zeldovich effect towards the ROSAT Cluster RXJ0658-5557
P. Andreani, H. Boehringer, G. Dall'Oglio +9
We report simultaneous observations at 1.2 and 2 mm, with a double channel photometer on the SEST Telescope, of the X-ray cluster RXJ0658-5557 in search for the Sunyaev-Zel'dovich…
Observations of the 57Fe+23 Hyperfine Transition in Clusters
H. Liang, J. M. Dickey, G. Moorey +1
We present a search for the hyperfine transition of the 57Fe+23 ion at 3.071 mm in clusters of galaxies with the ATNF Mopra telescope. The results are compared with a realistic est…
An X-ray and Radio study of the Cluster A2717
H. Liang, M. Pierre, A. Unewisse +1
We present an X-ray, radio and optical study of the cluster A2717. The central D galaxy is associated with a Wide-Angled-Tailed (WAT) radio source. A Rosat PSPC observation of the…