Temperature measurements with the relativistic Sunyaev-Zel’dovich effect
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, bec...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2024-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://www.epj-conferences.org/articles/epjconf/pdf/2024/03/epjconf_mmUniverse2023_00041.pdf |
| _version_ | 1797235279425175552 |
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| author | Perrott Y. |
| author_facet | Perrott Y. |
| author_sort | Perrott Y. |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-04-24T16:45:26Z |
| format | Article |
| id | doaj.art-cb1ecd00749f4e6688f2dd64dcdc34c4 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-04-24T16:45:26Z |
| publishDate | 2024-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-cb1ecd00749f4e6688f2dd64dcdc34c42024-03-29T08:31:01ZengEDP SciencesEPJ Web of Conferences2100-014X2024-01-012930004110.1051/epjconf/202429300041epjconf_mmUniverse2023_00041Temperature measurements with the relativistic Sunyaev-Zel’dovich effectPerrott Y.0Victoria University of WellingtonAt 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.https://www.epj-conferences.org/articles/epjconf/pdf/2024/03/epjconf_mmUniverse2023_00041.pdf |
| spellingShingle | Perrott Y. Temperature measurements with the relativistic Sunyaev-Zel’dovich effect EPJ Web of Conferences |
| title | Temperature measurements with the relativistic Sunyaev-Zel’dovich effect |
| title_full | Temperature measurements with the relativistic Sunyaev-Zel’dovich effect |
| title_fullStr | Temperature measurements with the relativistic Sunyaev-Zel’dovich effect |
| title_full_unstemmed | Temperature measurements with the relativistic Sunyaev-Zel’dovich effect |
| title_short | Temperature measurements with the relativistic Sunyaev-Zel’dovich effect |
| title_sort | temperature measurements with the relativistic sunyaev zel dovich effect |
| url | https://www.epj-conferences.org/articles/epjconf/pdf/2024/03/epjconf_mmUniverse2023_00041.pdf |
| work_keys_str_mv | AT perrotty temperaturemeasurementswiththerelativisticsunyaevzeldovicheffect |