Explaining the results of EDGES observation of 21cm line with Dark Matter-Dark Energy and Dark Matter-Baryon interactions
The EDGES experiment related to the observant of brightness temperature \(T_{21}\) of 21cm line arising from ground state of neutral Hydrogen atom, has shown an excess absorption feature ( \(− 500^ {+200}_{ − 500}\) mK) in \(T_{21}\) spectrum corresponds to the era of cosmic dawn (\(z \sim 17.2\)). ...
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| Format: | Article |
| Language: | English |
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Andromeda Publishing and Academic Services
2021-10-01
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| Series: | Letters in High Energy Physics |
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| Online Access: | http://journals.andromedapublisher.com/index.php/LHEP/article/view/208 |
| _version_ | 1818902399992987648 |
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| author | Upala Mukhopadhyay Debasish Majumdar Kanan K. Datta |
| author_facet | Upala Mukhopadhyay Debasish Majumdar Kanan K. Datta |
| author_sort | Upala Mukhopadhyay |
| collection | DOAJ |
| description | The EDGES experiment related to the observant of brightness temperature \(T_{21}\) of 21cm line arising from ground state of neutral Hydrogen atom, has shown an excess absorption feature ( \(− 500^ {+200}_{
− 500}\) mK) in \(T_{21}\) spectrum corresponds to the era of cosmic dawn (\(z \sim 17.2\)). In order to explain the observed excess trough of \(T_{21}\) we consider Interacting Dark Energy scenario (interaction of Dark Matter and Dark Energy) along with the scattering of baryon matter with Dark Matter. Three different Interacting Dark Energy (IDE) models are used and the viability of those models are tested in the context of EDGES experimental results. It is
found that Dark Matter-Dark Energy interaction modifies the evolution process of the Universe and hence consequently affects the brightness temperature. Dark Matter-baryon interaction also affects the \(T_{21}\) temperature since baryon fluid would transfer heat to the colder Dark Matter due to the Dark Matter baryon collision. In addition we also give bounds on the model parameters of the IDE models and Dark Matter model from EDGES observational data. It is noted that Dark Matter-Dark Energy interaction enables to explore larger range of Dark Matter mass regimes that would satisfy the EDGES result. |
| first_indexed | 2024-12-19T20:35:02Z |
| format | Article |
| id | doaj.art-9c5d921bff884acda0f15f3ea80054c8 |
| institution | Directory Open Access Journal |
| issn | 2632-2714 |
| language | English |
| last_indexed | 2024-12-19T20:35:02Z |
| publishDate | 2021-10-01 |
| publisher | Andromeda Publishing and Academic Services |
| record_format | Article |
| series | Letters in High Energy Physics |
| spelling | doaj.art-9c5d921bff884acda0f15f3ea80054c82022-12-21T20:06:34ZengAndromeda Publishing and Academic ServicesLetters in High Energy Physics2632-27142021-10-012021110.31526/lhep.2021.208Explaining the results of EDGES observation of 21cm line with Dark Matter-Dark Energy and Dark Matter-Baryon interactionsUpala Mukhopadhyay0Debasish Majumdar1Kanan K. Datta2Astroparticle Physics and Cosmology Division, Saha Institute of Nuclear Physics, HBNI, 1/AF Bidhannagar, Kolkata 700064, IndiaAstroparticle Physics and Cosmology Division, Saha Institute of Nuclear Physics, HBNI, 1/AF Bidhannagar, Kolkata 700064, IndiaDepartment of Physics, Presidency University, 86/1 College Street, Kolkata 700073, IndiaThe EDGES experiment related to the observant of brightness temperature \(T_{21}\) of 21cm line arising from ground state of neutral Hydrogen atom, has shown an excess absorption feature ( \(− 500^ {+200}_{ − 500}\) mK) in \(T_{21}\) spectrum corresponds to the era of cosmic dawn (\(z \sim 17.2\)). In order to explain the observed excess trough of \(T_{21}\) we consider Interacting Dark Energy scenario (interaction of Dark Matter and Dark Energy) along with the scattering of baryon matter with Dark Matter. Three different Interacting Dark Energy (IDE) models are used and the viability of those models are tested in the context of EDGES experimental results. It is found that Dark Matter-Dark Energy interaction modifies the evolution process of the Universe and hence consequently affects the brightness temperature. Dark Matter-baryon interaction also affects the \(T_{21}\) temperature since baryon fluid would transfer heat to the colder Dark Matter due to the Dark Matter baryon collision. In addition we also give bounds on the model parameters of the IDE models and Dark Matter model from EDGES observational data. It is noted that Dark Matter-Dark Energy interaction enables to explore larger range of Dark Matter mass regimes that would satisfy the EDGES result.http://journals.andromedapublisher.com/index.php/LHEP/article/view/208Dark EnergyDark Matter21 cm line of Hydrogen atom |
| spellingShingle | Upala Mukhopadhyay Debasish Majumdar Kanan K. Datta Explaining the results of EDGES observation of 21cm line with Dark Matter-Dark Energy and Dark Matter-Baryon interactions Letters in High Energy Physics Dark Energy Dark Matter 21 cm line of Hydrogen atom |
| title | Explaining the results of EDGES observation of 21cm line with Dark Matter-Dark Energy and Dark Matter-Baryon interactions |
| title_full | Explaining the results of EDGES observation of 21cm line with Dark Matter-Dark Energy and Dark Matter-Baryon interactions |
| title_fullStr | Explaining the results of EDGES observation of 21cm line with Dark Matter-Dark Energy and Dark Matter-Baryon interactions |
| title_full_unstemmed | Explaining the results of EDGES observation of 21cm line with Dark Matter-Dark Energy and Dark Matter-Baryon interactions |
| title_short | Explaining the results of EDGES observation of 21cm line with Dark Matter-Dark Energy and Dark Matter-Baryon interactions |
| title_sort | explaining the results of edges observation of 21cm line with dark matter dark energy and dark matter baryon interactions |
| topic | Dark Energy Dark Matter 21 cm line of Hydrogen atom |
| url | http://journals.andromedapublisher.com/index.php/LHEP/article/view/208 |
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