Cosmological Observational Tests in the JWST Era. II: The Tolman Test
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arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| _version_ | 1866915970860187648 |
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| author | Tsymbal, V. V. Raikov, A. A. Lovyagin, N. Yu. |
| author_facet | Tsymbal, V. V. Raikov, A. A. Lovyagin, N. Yu. |
| contents | In this work, we investigate a classical cosmological test - the dependence of galaxy surface brightness on redshift z (the Tolman test). We analyzed 6 860 galaxies with reliably determined spectroscopic redshifts from the ASTRODEEP-JWST photometric catalogue. We find that (a) the mean surface brightness of galaxies indeed decreases with increasing distance, and (b) the observed trend shows a significant departure from the prediction of the standard cosmological model, which expects the mean surface brightness to decline as ~ (1 + z)^-4. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_27867 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Cosmological Observational Tests in the JWST Era. II: The Tolman Test Tsymbal, V. V. Raikov, A. A. Lovyagin, N. Yu. Cosmology and Nongalactic Astrophysics In this work, we investigate a classical cosmological test - the dependence of galaxy surface brightness on redshift z (the Tolman test). We analyzed 6 860 galaxies with reliably determined spectroscopic redshifts from the ASTRODEEP-JWST photometric catalogue. We find that (a) the mean surface brightness of galaxies indeed decreases with increasing distance, and (b) the observed trend shows a significant departure from the prediction of the standard cosmological model, which expects the mean surface brightness to decline as ~ (1 + z)^-4. |
| title | Cosmological Observational Tests in the JWST Era. II: The Tolman Test |
| topic | Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2604.27867 |