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Relics in galaxy clusters at high radio frequencies
Maja Kierdorf, Rainer Beck, Matthias Hoeft +4
We observed three radio relics in galaxy clusters and one radio relic candidate at 4.85 and 8.35 GHz in total emission and linearly polarized emission with the Effelsberg 100-m tel…
Suzaku observations of the merging galaxy cluster Abell2255: The northeast radio relic
H. Akamatsu, M. Mizuno, N. Ota +12
We present the results of deep 140 ks Suzaku X-ray observations of the north-east (NE) radio relic of the merging galaxy cluster Abell2255. The temperature structure of Abell2255 i…
A large H survey of star formation in relaxed and merging galaxy cluster environments at
Andra Stroe, David Sobral, Ana Afonso +4
We present the first results from the largest H survey of star formation and AGN activity in galaxy clusters. Using 9 different narrow band filters, we select H emitt…
The LOFAR Two-metre Sky Survey - I. Survey Description and Preliminary Data Release
T. W. Shimwell, H. J. A. Röttgering, P. N. Best +69
The LOFAR Two-metre Sky Survey (LoTSS) is a deep 120-168 MHz imaging survey that will eventually cover the entire Northern sky. Each of the 3170 pointings will be observed for 8 hr…
Tracing low-mass galaxy clusters with radio relics: the discovery of Abell 3527-bis
F. de Gasperin, H. T. Intema, J. Ridl +6
Galaxy clusters undergo mergers that can generate extended radio sources called radio relics. Radio relics are the consequence of merger-induced shocks that propagate in the intra…
Carbon and hydrogen radio recombination lines from the cold clouds towards Cassiopeia A
J. B. R. Oonk, R. J. van Weeren, P. Salas +5
We use the Low Frequency Array to perform a systematic high spectral resolution investigation of the low-frequency 33-78 MHz spectrum along the line of sight to Cassiopeia A. We co…