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arXiv · 2310.07087

Probing the evolution of galaxy clusters using SZ effect and non-thermal emission: first results from A1413

Mohini Pachchigar·Yvette Perrott·Tulasi Parashar
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Abstract

Mass is the most fundamental property of galaxy clusters. However, measuring it is still a challenge. Calibrating mass from intracluster medium observables such as the Sunyaev-Zel'dovich (SZ) effect is subject to uncertainty and biases because of the hydrostatic equilibrium assumption. On the other hand, merging cluster systems have been shown to exhibit radio emission which implies a link with disturbances from hydrostatic equilibrium. We present work on studying deviations of galaxy cluster gas pressure profile from the average (universal) pressure profile using an example of galaxy cluster Abell 1413 with SZ effect data from the Arcminute Microkelvin Imager and Planck. This cluster has also been observed at low radio frequency with the Murchison Widefield Array allowing the investigation of links between gas pressure profile deviations and the presence of radio emission.

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Mohini Pachchigar, Yvette Perrott, Tulasi Parashar. 2023-10-11. Probing the evolution of galaxy clusters using SZ effect and non-thermal emission: first results from A1413. https://doi.org/10.1051/epjconf/202429300036

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