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How Cold Is Cold Dark Matter? Small-Scales Constraints from the Flux Power Spectrum of the High-Redshift Lyman-αForest
Open accessAbstract
We present constraints on the mass of warm dark matter (WDM) particles derived from the Lyman-$\ensuremath{\alpha}$ flux power spectrum of 55 high-resolution HIRES spectra at $2.0<z<6.4$. From the HIRES spectra, we obtain a lower limit of ${m}_{\mathrm{WDM}}\ensuremath{\gtrsim}1.2\text{ }\text{ }\mathrm{keV}$ ($2\ensuremath{\sigma}$) if the WDM consists of early decoupled thermal relics and ${m}_{\mathrm{WDM}}\ensuremath{\gtrsim}5.6\text{ }\text{ }\mathrm{keV}$ ($2\ensuremath{\sigma}$) for sterile neutrinos. Adding the Sloan Digital Sky Survey Lyman-$\ensuremath{\alpha}$ flux power spectrum, we get ${m}_{\mathrm{WDM}}\ensuremath{\gtrsim}4\text{ }\text{ }\mathrm{keV}$ and ${m}_{\mathrm{WDM}}\ensuremath{\gtrsim}28\text{ }\text{ }\mathrm{keV}$ ($2\ensuremath{\sigma}$) for thermal relics and sterile neutrinos. These results improve previous constraints by a factor of 2.
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Cites
The cosmological simulation code gadget-2
Springel, V. (2005) · Monthly Notices of the Royal Astronomical Society · doi:10.1111/j.1365-2966.2005.09655.x · Cited by 6,368
Cosmological parameters from CMB and other data: A Monte Carlo approach
Lewis, A., & Bridle, S. (2002) · Physical Review D · doi:10.1103/physrevd.66.103511 · Cited by 3,495
Cited by
Guo, Q., White, S., Boylan-Kolchin, M., De Lucia, G., Kauffmann, G., Lemson, G., Li, C., Springel, V., & Weinmann, S. (2011) · Monthly Notices of the Royal Astronomical Society · doi:10.1111/j.1365-2966.2010.18114.x · Cited by 1,205
Cosmology and Fundamental Physics with the Euclid Satellite
The Euclid Theory Working Group, Amendola, L., Appleby, S., Bacon, D., Baker, T., Baldi, M., Bartolo, N., Blanchard, A., Bonvin, C., Borgani, S., et al. (2013) · Living Reviews in Relativity · doi:10.12942/lrr-2013-6 · Cited by 899
Cold dark matter: Controversies on small scales
Weinberg, D. H., Bullock, J. S., Governato, F., Kuzio de Naray, R., & Peter, A. H. G. (2015) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1308716112 · Cited by 491
Read, J. I. (2014) · Journal of Physics G: Nuclear and Particle Physics · doi:10.1088/0954-3899/41/6/063101 · Cited by 489
Dark matter and cosmic structure
Frenk, C. S., & White, S. D. M. (2012) · Annalen der Physik · doi:10.1002/andp.201200212 · Cited by 409
Metadata
- Authors
- Viel, M., Becker, G. D., Bolton, J. S., Haehnelt, M. G., Rauch, M., & Sargent, W. L. W.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2008-01-29
- Volume
- 100
- Issue
- 4
- Pages
- 041304-041304
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2155976193
- Cited by
- 207
- References
- 2
- FWCI
- 13.46
- Type
- journal article
- Language
- en
- Open access
- green
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- Viel, M., Becker, G. D., Bolton, J. S., Haehnelt, M. G., Rauch, M., & Sargent, W. L. W. (2008). How Cold Is Cold Dark Matter? Small-Scales Constraints from the Flux Power Spectrum of the High-Redshift Lyman-αForest. Physical Review Letters. https://doi.org/10.1103/physrevlett.100.041304
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