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20 April 2024

» arxiv » 2004.3203

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Collimated synchrotron threads linking the radio lobes of ESO137-006
M. Ramatsoku ; M. Murgia ; V. Vacca ; P. Serra ; S. Makhathini ; F. Govoni ; O. Smirnov ; L. A. L. Andati ; E. de Blok ; G. I. G. Józsa ; P. Kamphuis ; D. Kleiner ; F. M. Maccagni ; D. Cs. Molnár ; A. J. T. Ramaila ; K. Thorat ; S.V. White ;
Date:	7 Apr 2020
Abstract:	We present MeerKAT 1000 MHz and 1400 MHz observations of a bright radio galaxy in the southern hemisphere, ESO~137-006. The galaxy lies at the centre of the massive and merging Norma galaxy cluster. The MeerKAT continuum images (rms ~0.02 mJy/beam at ~10" resolution) reveal new features that have never been seen in a radio galaxy before: collimated synchrotron threads of yet unknown origin, which link the extended and bent radio lobes of ESO~137-006. The most prominent of these threads stretches in projection for about 80 kpc and is about 1 kpc in width. The radio spectrum of the threads is steep, with a spectral index of up to $alphasimeq 2$ between 1000 MHz and 1400 MHz.
Source:	arXiv, 2004.3203
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