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The thermal history of the intergalactic medium
Open accessAbstract
At redshifts z ≳ 2, most of the baryons reside in the smooth intergalactic medium which is responsible for the low column density Lyα forest. This photoheated gas follows a tight temperature-density relation which introduces a cut-off in the distribution of widths of the Lyα absorption lines (b-parameters) as a function of column density. We have measured this cut-off in a sample of nine high-resolution, high signal-to-noise ratio quasar spectra and determined the thermal evolution of the intergalactic medium in the redshift range 2.0–4.5. At a redshift z∼3, the temperature at the mean density shows a peak and the gas becomes nearly isothermal. We interpret this as evidence for the reionization of He ii.
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Cited by
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Schaye, J., Crain, R. A., Bower, R. G., Furlong, M., Schaller, M., Theuns, T., Dalla Vecchia, C., Frenk, C. S., McCarthy, I. G., Helly, J. C., et al. (2015) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/stu2058 · Cited by 3,601
Self-citationThe EAGLE simulations of galaxy formation: calibration of subgrid physics and model variations
Crain, R. A., Schaye, J., Bower, R. G., Furlong, M., Schaller, M., Theuns, T., Dalla Vecchia, C., Frenk, C. S., McCarthy, I. G., Helly, J. C., et al. (2015) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/stv725 · Cited by 1,451
Self-citationThe physics driving the cosmic star formation history
Schaye, J., Vecchia, C. D., Booth, C. M., Wiersma, R. P. C., Theuns, T., Haas, M. R., Bertone, S., Duffy, A. R., McCarthy, I. G., & van de Voort, F. (2010) · Monthly Notices of the Royal Astronomical Society · doi:10.1111/j.1365-2966.2009.16029.x · Cited by 851
Self-citationObservational Constraints on Cosmic Reionization
Fan, X., Carilli, C. L., & Keating, B. (2006) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev.astro.44.051905.092514 · Cited by 788
Effect of Reionization on Structure Formation in the Universe
Gnedin, N. Y. (2000) · The Astrophysical Journal · doi:10.1086/317042 · Cited by 708
Metadata
- Authors
- Schaye, J., Theuns, T., Rauch, M., Efstathiou, G., & Sargent, W. L. W.
- Venue
- Monthly Notices of the Royal Astronomical Society
- Publisher
- Oxford University Press (OUP)
- Published
- 2000-11
- Volume
- 318
- Issue
- 3
- Pages
- 817-826
- ISSN
- 0035-8711 (ISSN-L)
- 1365-2966
- OpenAlex
- W2029248679
- Cited by
- 395
- References
- 0
- FWCI
- 15.07
- Type
- journal article
- Language
- en
- Open access
- green
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- Schaye, J., Theuns, T., Rauch, M., Efstathiou, G., & Sargent, W. L. W. (2000). The thermal history of the intergalactic medium. Monthly Notices of the Royal Astronomical Society. https://doi.org/10.1046/j.1365-8711.2000.03815.x
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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