T. W. Shimwell

The LOFAR Two-metre Sky Survey: Deep Fields Data Release 2

T. W. Shimwell, C. L. Hale, P. N. Best, A. Botteon et autres

We present the final 6″ resolution data release of the ELAIS-N1 field from the LOw-Frequency ARray (LOFAR) Two-metre Sky Survey Deep Fields project (LoTSS Deep). The 144 MHz images are the most sensitive achieved to date at this frequency and were created …

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A Deep Dive into the NGC 741 Galaxy Group: Insights into a Spectacular Head-Tail Radio Galaxy from VLA, MeerKAT, uGMRT and LOFAR

K. Rajpurohit, Ewan O’Sullivan, Gerrit Schellenberger, M. Brienza et autres

We present deep, wideband multifrequency radio observations (144 MHz$-$8 GHz) of the remarkable galaxy group NGC 741, which yield crucial insights into the interaction between the infalling head-tail radio galaxy (NGC 742) and the main group. Our new data provide an unprecedentedly …

Probing particle acceleration in Abell 2256: from to 16 MHz to gamma rays

E. Osinga, R. J. van Weeren, G. Brunetti, R. Adam et autres

Merging galaxy clusters often host spectacular diffuse radio synchrotron sources. These sources can be explained by a non-thermal pool of relativistic electrons accelerated by shocks and turbulence in the intracluster medium. The origin of the pool and details of the cosmic ray …

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The diffuse radio emission in the high-redshift cluster PSZ2 G091.83+26.11: total intensity and polarisation analysis with Very Large Array 1-4 GHz observations

G. Di Gennaro, M. Brüggen, R. J. van Weeren, A. Simionescu et autres

We present the peculiar case of PSZ2G091.83+26.11 at z=0.822. This cluster hosts a Mpc-scale radio halo and an elongated radio source, whose location with the respect to the intracluster medium (ICM) distribution and to the cluster centre is not consistent with a …