The Epoch of Reionization in Warm Dark Matter Scenarios
In this paper we investigate how the Reionization process is affected by early galaxy formation in different cosmological scenarios. We use a semi-analytic model with suppressed initial power spectra to obtain the UV Luminosity Function in thermal Warm Dark Matter and sterile neutrino cosmologies. W...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-09-01
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| Series: | Universe |
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| Online Access: | https://www.mdpi.com/2218-1997/7/10/365 |
| _version_ | 1797513086903517184 |
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| author | Massimiliano Romanello Nicola Menci Marco Castellano |
| author_facet | Massimiliano Romanello Nicola Menci Marco Castellano |
| author_sort | Massimiliano Romanello |
| collection | DOAJ |
| description | In this paper we investigate how the Reionization process is affected by early galaxy formation in different cosmological scenarios. We use a semi-analytic model with suppressed initial power spectra to obtain the UV Luminosity Function in thermal Warm Dark Matter and sterile neutrino cosmologies. We retrace the ionization history of intergalactic medium with hot stellar emission only, exploiting fixed and variable photons escape fraction models (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>f</mi><mrow><mi>e</mi><mi>s</mi><mi>c</mi></mrow></msub></semantics></math></inline-formula>). For each cosmology, we find an upper limit to fixed <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>f</mi><mrow><mi>e</mi><mi>s</mi><mi>c</mi></mrow></msub></semantics></math></inline-formula>, which guarantees the completion of the process at <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>z</mi><mo><</mo><mn>6.7</mn></mrow></semantics></math></inline-formula>. The analysis is tested with two limit hypothesis on high-z ionized hydrogen volume fraction, comparing our predictions with observational results. |
| first_indexed | 2024-03-10T06:09:47Z |
| format | Article |
| id | doaj.art-bad51059a340446bb826d9edfae4f860 |
| institution | Directory Open Access Journal |
| issn | 2218-1997 |
| language | English |
| last_indexed | 2024-03-10T06:09:47Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Universe |
| spelling | doaj.art-bad51059a340446bb826d9edfae4f8602023-11-22T20:13:56ZengMDPI AGUniverse2218-19972021-09-0171036510.3390/universe7100365The Epoch of Reionization in Warm Dark Matter ScenariosMassimiliano Romanello0Nicola Menci1Marco Castellano2Dipartimento di Fisica e Astronomia, Alma Mater Studiorum Università di Bologna, Via Piero Gobetti 93/2, 40129 Bologna, ItalyOsservatorio Astronomico di Roma, INAF, Via di Frascati 33, 00040 Monte Porzio Catone, ItalyOsservatorio Astronomico di Roma, INAF, Via di Frascati 33, 00040 Monte Porzio Catone, ItalyIn this paper we investigate how the Reionization process is affected by early galaxy formation in different cosmological scenarios. We use a semi-analytic model with suppressed initial power spectra to obtain the UV Luminosity Function in thermal Warm Dark Matter and sterile neutrino cosmologies. We retrace the ionization history of intergalactic medium with hot stellar emission only, exploiting fixed and variable photons escape fraction models (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>f</mi><mrow><mi>e</mi><mi>s</mi><mi>c</mi></mrow></msub></semantics></math></inline-formula>). For each cosmology, we find an upper limit to fixed <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>f</mi><mrow><mi>e</mi><mi>s</mi><mi>c</mi></mrow></msub></semantics></math></inline-formula>, which guarantees the completion of the process at <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>z</mi><mo><</mo><mn>6.7</mn></mrow></semantics></math></inline-formula>. The analysis is tested with two limit hypothesis on high-z ionized hydrogen volume fraction, comparing our predictions with observational results.https://www.mdpi.com/2218-1997/7/10/365reionizationWarm Dark Mattersterile neutrinosescape fraction |
| spellingShingle | Massimiliano Romanello Nicola Menci Marco Castellano The Epoch of Reionization in Warm Dark Matter Scenarios Universe reionization Warm Dark Matter sterile neutrinos escape fraction |
| title | The Epoch of Reionization in Warm Dark Matter Scenarios |
| title_full | The Epoch of Reionization in Warm Dark Matter Scenarios |
| title_fullStr | The Epoch of Reionization in Warm Dark Matter Scenarios |
| title_full_unstemmed | The Epoch of Reionization in Warm Dark Matter Scenarios |
| title_short | The Epoch of Reionization in Warm Dark Matter Scenarios |
| title_sort | epoch of reionization in warm dark matter scenarios |
| topic | reionization Warm Dark Matter sterile neutrinos escape fraction |
| url | https://www.mdpi.com/2218-1997/7/10/365 |
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