| Issue |
EPJ Web Conf.
Volume 293, 2024
mm Universe 2023 - Observing the Universe at mm Wavelengths
|
|
|---|---|---|
| Article Number | 00041 | |
| Number of page(s) | 6 | |
| DOI | https://doi.org/10.1051/epjconf/202429300041 | |
| Published online | 28 March 2024 | |
https://doi.org/10.1051/epjconf/202429300041
Temperature measurements with the relativistic Sunyaev-Zel’dovich effect
Victoria University of Wellington, New Zealand
* e-mail: yvette.perrott@vuw.ac.nz
Published online: 28 March 2024
At temperatures above ∼5 keV, the non-relativistic approximation used to derive the classical thermal Sunyaev-Zel’dovich effect spectrum begins to fail. When relativistic effects are included, the spectrum becomes temperature-dependent. This leads to both a problem and an opportunity: a problem, because when the temperature dependence is not accounted for the Compton-y estimate is biased; and an opportunity, because it represents a new way to measure the temperature of the intracluster medium independently of X-ray observations. This work presents current results from investigating the impact of relativistic effects on Planck cluster observations, and projections for future measurements of cluster temperatures using the Atacama Large Aperture Sub-millimetre Telescope.
© The Authors, published by EDP Sciences, 2024
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.