Astroparticle Constraints from Cosmic Reionization and Primordial Galaxy Formation
We derived astroparticle constraints in different dark matter scenarios that are alternatives to cold dark matter (CDM): thermal relic warm dark matter, WDM; fuzzy dark matter, <inline-formula><math display="inline"><semantics><mi>ψ</mi></semantics></...
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| Format: | Article |
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MDPI AG
2022-09-01
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| Series: | Universe |
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| Online Access: | https://www.mdpi.com/2218-1997/8/9/476 |
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| author | Andrea Lapi Tommaso Ronconi Lumen Boco Francesco Shankar Nicoletta Krachmalnicoff Carlo Baccigalupi Luigi Danese |
| author_facet | Andrea Lapi Tommaso Ronconi Lumen Boco Francesco Shankar Nicoletta Krachmalnicoff Carlo Baccigalupi Luigi Danese |
| author_sort | Andrea Lapi |
| collection | DOAJ |
| description | We derived astroparticle constraints in different dark matter scenarios that are alternatives to cold dark matter (CDM): thermal relic warm dark matter, WDM; fuzzy dark matter, <inline-formula><math display="inline"><semantics><mi>ψ</mi></semantics></math></inline-formula>DM; self-interacting dark matter, SIDM; sterile neutrino dark matter, <inline-formula><math display="inline"><semantics><mi>ν</mi></semantics></math></inline-formula>DM. Our framework is based on updated determinations of the high-redshift UV luminosity functions for primordial galaxies to redshift <inline-formula><math display="inline"><semantics><mrow><mi>z</mi><mo>∼</mo><mn>10</mn></mrow></semantics></math></inline-formula>, on redshift-dependent halo mass functions in the above DM scenarios from numerical simulations, and on robust constraints on the reionization history of the Universe from recent astrophysical and cosmological datasets. First, we built an empirical model of cosmic reionization characterized by two parameters, namely the escape fraction <inline-formula><math display="inline"><semantics><msub><mi>f</mi><mi>esc</mi></msub></semantics></math></inline-formula> of ionizing photons from primordial galaxies, and the limiting UV magnitude <inline-formula><math display="inline"><semantics><msubsup><mi>M</mi><mrow><mi>UV</mi></mrow><mi>lim</mi></msubsup></semantics></math></inline-formula> down to which the extrapolated UV luminosity functions steeply increased. Second, we performed standard abundance matching of the UV luminosity function and the halo mass function, obtaining a relationship between UV luminosity and the halo mass, whose shape depends on an astroparticle quantity <i>X</i> specific to each DM scenario (e.g., WDM particle mass); we exploited such a relationship to introduce (in the analysis) a constraint from primordial galaxy formation, in terms of the threshold halo mass above which primordial galaxies can efficiently form stars. Third, we performed Bayesian inference on the three parameters <inline-formula><math display="inline"><semantics><msub><mi>f</mi><mi>esc</mi></msub></semantics></math></inline-formula>, <inline-formula><math display="inline"><semantics><msubsup><mi>M</mi><mrow><mi>UV</mi></mrow><mi>lim</mi></msubsup></semantics></math></inline-formula>, and <i>X</i> via a standard MCMC technique, and compared the outcomes of different DM scenarios on the reionization history. We also investigated the robustness of our findings against educated variations of still uncertain astrophysical quantities. Finally, we highlight the relevance of our astroparticle estimates in predicting the behavior of the high-redshift UV luminosity function at faint, yet unexplored magnitudes, which may be tested with the advent of the James Webb Space Telescope. |
| first_indexed | 2024-03-09T22:17:54Z |
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| institution | Directory Open Access Journal |
| issn | 2218-1997 |
| language | English |
| last_indexed | 2024-03-09T22:17:54Z |
| publishDate | 2022-09-01 |
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| series | Universe |
| spelling | doaj.art-14bef31540574d37a90200629911e9442023-11-23T19:19:09ZengMDPI AGUniverse2218-19972022-09-018947610.3390/universe8090476Astroparticle Constraints from Cosmic Reionization and Primordial Galaxy FormationAndrea Lapi0Tommaso Ronconi1Lumen Boco2Francesco Shankar3Nicoletta Krachmalnicoff4Carlo Baccigalupi5Luigi Danese6Scuola Internazionale Superiore Studi Avanzati (SISSA), Physics Area, Via Bonomea 265, 34136 Trieste, ItalyScuola Internazionale Superiore Studi Avanzati (SISSA), Physics Area, Via Bonomea 265, 34136 Trieste, ItalyScuola Internazionale Superiore Studi Avanzati (SISSA), Physics Area, Via Bonomea 265, 34136 Trieste, ItalyDepartment of Physics and Astronomy, University of Southampton, Highfield SO17 1BJ, UKScuola Internazionale Superiore Studi Avanzati (SISSA), Physics Area, Via Bonomea 265, 34136 Trieste, ItalyScuola Internazionale Superiore Studi Avanzati (SISSA), Physics Area, Via Bonomea 265, 34136 Trieste, ItalyScuola Internazionale Superiore Studi Avanzati (SISSA), Physics Area, Via Bonomea 265, 34136 Trieste, ItalyWe derived astroparticle constraints in different dark matter scenarios that are alternatives to cold dark matter (CDM): thermal relic warm dark matter, WDM; fuzzy dark matter, <inline-formula><math display="inline"><semantics><mi>ψ</mi></semantics></math></inline-formula>DM; self-interacting dark matter, SIDM; sterile neutrino dark matter, <inline-formula><math display="inline"><semantics><mi>ν</mi></semantics></math></inline-formula>DM. Our framework is based on updated determinations of the high-redshift UV luminosity functions for primordial galaxies to redshift <inline-formula><math display="inline"><semantics><mrow><mi>z</mi><mo>∼</mo><mn>10</mn></mrow></semantics></math></inline-formula>, on redshift-dependent halo mass functions in the above DM scenarios from numerical simulations, and on robust constraints on the reionization history of the Universe from recent astrophysical and cosmological datasets. First, we built an empirical model of cosmic reionization characterized by two parameters, namely the escape fraction <inline-formula><math display="inline"><semantics><msub><mi>f</mi><mi>esc</mi></msub></semantics></math></inline-formula> of ionizing photons from primordial galaxies, and the limiting UV magnitude <inline-formula><math display="inline"><semantics><msubsup><mi>M</mi><mrow><mi>UV</mi></mrow><mi>lim</mi></msubsup></semantics></math></inline-formula> down to which the extrapolated UV luminosity functions steeply increased. Second, we performed standard abundance matching of the UV luminosity function and the halo mass function, obtaining a relationship between UV luminosity and the halo mass, whose shape depends on an astroparticle quantity <i>X</i> specific to each DM scenario (e.g., WDM particle mass); we exploited such a relationship to introduce (in the analysis) a constraint from primordial galaxy formation, in terms of the threshold halo mass above which primordial galaxies can efficiently form stars. Third, we performed Bayesian inference on the three parameters <inline-formula><math display="inline"><semantics><msub><mi>f</mi><mi>esc</mi></msub></semantics></math></inline-formula>, <inline-formula><math display="inline"><semantics><msubsup><mi>M</mi><mrow><mi>UV</mi></mrow><mi>lim</mi></msubsup></semantics></math></inline-formula>, and <i>X</i> via a standard MCMC technique, and compared the outcomes of different DM scenarios on the reionization history. We also investigated the robustness of our findings against educated variations of still uncertain astrophysical quantities. Finally, we highlight the relevance of our astroparticle estimates in predicting the behavior of the high-redshift UV luminosity function at faint, yet unexplored magnitudes, which may be tested with the advent of the James Webb Space Telescope.https://www.mdpi.com/2218-1997/8/9/476cosmic reionizationdark mattergalaxy formation |
| spellingShingle | Andrea Lapi Tommaso Ronconi Lumen Boco Francesco Shankar Nicoletta Krachmalnicoff Carlo Baccigalupi Luigi Danese Astroparticle Constraints from Cosmic Reionization and Primordial Galaxy Formation Universe cosmic reionization dark matter galaxy formation |
| title | Astroparticle Constraints from Cosmic Reionization and Primordial Galaxy Formation |
| title_full | Astroparticle Constraints from Cosmic Reionization and Primordial Galaxy Formation |
| title_fullStr | Astroparticle Constraints from Cosmic Reionization and Primordial Galaxy Formation |
| title_full_unstemmed | Astroparticle Constraints from Cosmic Reionization and Primordial Galaxy Formation |
| title_short | Astroparticle Constraints from Cosmic Reionization and Primordial Galaxy Formation |
| title_sort | astroparticle constraints from cosmic reionization and primordial galaxy formation |
| topic | cosmic reionization dark matter galaxy formation |
| url | https://www.mdpi.com/2218-1997/8/9/476 |
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