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Discovery of Diffuse Radio Emission in a Massive z = 1.709 Cool Core Cluster: A Candidate Radio Minihalo

  • Authors: Julie HLavacek-Larrondo, Roland Timmerman, Christoph Pfrommer, Erik Osinga, Larissa Tevlin, Tracy M. A. Webb, Natalia Martorella, Xiaoyuan Zhang, Reinout van Weeren, Hyunseop Choi, Gabriella Di Gennaro, Marie-Lou Gendron-Marsolais, Carter Rhea

Julie HLavacek-Larrondo et al 2025 The Astrophysical Journal Letters 987 .

  • Provider: AAS Journals

Caption: Figure 4.

Compilation of minihalos from A. Richard-Laferrière et al. (2020), along with the best fit shown with the solid line, also from A. Richard-Laferrière et al. (2020). The minihalo radio power (P1.4 GHz) is shown as a function of X-ray luminosity within a radius of 600 kpc (LX). SpARCS1049+56 is represented by the blue star. Here, we used the flux density at 144 MHz from the LOFAR 6″ image and extrapolated it to 1.4 GHz, while the X-ray luminosity was estimated using XMM-Newton observations.

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