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19 April 2024 |
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Diffuse radio emission in a REFLEX cluster | | L. Feretti
; P. Schuecker
; H. Boehringer
; F. Govoni
; G. Giovannini
; | | Date: |
10 Aug 2005 | | Subject: | astro-ph | | Affiliation: | IRA BO), P. Schuecker (MPE Garching), H. Boehringer (MPE Garching), F. Govoni (IRA BO and Univ. BO), G. Giovannini (IRA BO and Univ. BO | | Abstract: | Deep Very Large Array radio observations are presented for the REFLEX clusters RXCJ0437.1+0043 and RXCJ1314.4-2515. They are at similar distance and show similar X-ray luminosity, but they are quite different in X-ray structure. Indeed RXCJ0437.1+0043 is regular and relaxed, whereas RXCJ1314.4-2515 is characterized by substructure and possible merging processes. The radio images reveal no diffuse emission in RXCJ0437.1+0043, and a complex diffuse structure in RXCJ1314.4-2515. The diffuse source in the latter cluster consists of a central radio halo which extends to the West toward the cluster periphery and bends to the North to form a possible relic. Another extended source is detected in the eastern cluster peripheral region. Although there could be plausible optical identifications for this source, it might also be a relic candidate owing to its very steep spectrum. The present results confirm the tight link between diffuse cluster radio sources and cluster merger processes. | | Source: | arXiv, astro-ph/0508238 | | Services: | Forum | Review | PDF | Favorites | |
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