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2020A&A...636L...1R - Astronomy and Astrophysics, volume 636, L1-1 (2020/4-1)
Collimated synchrotron threads linking the radio lobes of ESO 137-006.
RAMATSOKU M., MURGIA M., VACCA V., SERRA P., MAKHATHINI S., GOVONI F., SMIRNOV O., ANDATI L.A.L., DE BLOK E., JOZSA G.I.G., KAMPHUIS P., KLEINER D., MACCAGNI F.M., MOLNAR D.C., RAMAILA A.J.T., THORAT K. and WHITE S.V.
Abstract (from CDS):
We present MeerKAT 1000MHz and 1400MHz 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∼0.02mJy/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 80kpc and is about 1kpc in width. The radio spectrum of the threads is steep, with a spectral index of up to α~=2 between 1000 and 1400MHz.
Abstract Copyright: © ESO 2020
Journal keyword(s): radio continuum: galaxies
Simbad objects: 12
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