Cutoff in the Lyman-α forest power spectrum: Warm IGM or warm dark matter?
We re-analyse high redshift and high resolution Lyman-α forest spectra considered in [1], seeking to constrain the properties of warm dark matter particles. Compared to this previous work, we consider a wider range of thermal histories of the intergalactic medium. We find that both warm and cold dar...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2017-10-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269317306445 |
| _version_ | 1819326841216827392 |
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| author | Antonella Garzilli Alexey Boyarsky Oleg Ruchayskiy |
| author_facet | Antonella Garzilli Alexey Boyarsky Oleg Ruchayskiy |
| author_sort | Antonella Garzilli |
| collection | DOAJ |
| description | We re-analyse high redshift and high resolution Lyman-α forest spectra considered in [1], seeking to constrain the properties of warm dark matter particles. Compared to this previous work, we consider a wider range of thermal histories of the intergalactic medium. We find that both warm and cold dark matter models can explain the cut-off observed in the flux power spectra of high-resolution observations equally well. This implies, however, very different thermal histories and underlying reionization models. We discuss how to remove this degeneracy. Keywords: Cosmology, Methods, Quasars |
| first_indexed | 2024-12-24T13:01:21Z |
| format | Article |
| id | doaj.art-aa48951412694eab8721a58ef5403f57 |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-12-24T13:01:21Z |
| publishDate | 2017-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-aa48951412694eab8721a58ef5403f572022-12-21T16:54:08ZengElsevierPhysics Letters B0370-26932017-10-01773258264Cutoff in the Lyman-α forest power spectrum: Warm IGM or warm dark matter?Antonella Garzilli0Alexey Boyarsky1Oleg Ruchayskiy2Lorentz Institute, Leiden University, Niels Bohrweg 2, Leiden, NL-2333 CA, The Netherlands; Corresponding author.Lorentz Institute, Leiden University, Niels Bohrweg 2, Leiden, NL-2333 CA, The NetherlandsDiscovery Center, Niels Bohr Institute, Blegdamsvej 17, DK-2100 Copenhagen, DenmarkWe re-analyse high redshift and high resolution Lyman-α forest spectra considered in [1], seeking to constrain the properties of warm dark matter particles. Compared to this previous work, we consider a wider range of thermal histories of the intergalactic medium. We find that both warm and cold dark matter models can explain the cut-off observed in the flux power spectra of high-resolution observations equally well. This implies, however, very different thermal histories and underlying reionization models. We discuss how to remove this degeneracy. Keywords: Cosmology, Methods, Quasarshttp://www.sciencedirect.com/science/article/pii/S0370269317306445 |
| spellingShingle | Antonella Garzilli Alexey Boyarsky Oleg Ruchayskiy Cutoff in the Lyman-α forest power spectrum: Warm IGM or warm dark matter? Physics Letters B |
| title | Cutoff in the Lyman-α forest power spectrum: Warm IGM or warm dark matter? |
| title_full | Cutoff in the Lyman-α forest power spectrum: Warm IGM or warm dark matter? |
| title_fullStr | Cutoff in the Lyman-α forest power spectrum: Warm IGM or warm dark matter? |
| title_full_unstemmed | Cutoff in the Lyman-α forest power spectrum: Warm IGM or warm dark matter? |
| title_short | Cutoff in the Lyman-α forest power spectrum: Warm IGM or warm dark matter? |
| title_sort | cutoff in the lyman α forest power spectrum warm igm or warm dark matter |
| url | http://www.sciencedirect.com/science/article/pii/S0370269317306445 |
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