Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/31159
Campo DC | Valore | Lingua |
---|---|---|
dc.contributor.author | Marco Baiesi | en_US |
dc.contributor.author | BURIGANA, CARLO | en_US |
dc.contributor.author | Livia Conti | en_US |
dc.contributor.author | Gianmaria Falasco | en_US |
dc.contributor.author | Christian Maes | en_US |
dc.contributor.author | Lamberto Rondoni | en_US |
dc.contributor.author | Tiziana Trombetti | en_US |
dc.date.accessioned | 2021-11-26T13:32:08Z | - |
dc.date.available | 2021-11-26T13:32:08Z | - |
dc.date.issued | 2020 | en_US |
dc.identifier.issn | 2643-1564 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/31159 | - |
dc.description.abstract | The cosmic background radiation has been observed to deviate from the Planck law expected from a blackbody at $\sim$ 2.7 K at frequencies below $\sim 3$ GHz. We discuss the abundance of the low-energy photons from the perspective of nonequilibrium statistical mechanics. We propose a mechanism of stochastic frequency-diffusion, the counterpart to stochastic acceleration for charged particles in a turbulent plasma, to modify the standard Kompaneets equation. The resulting violation of the Einstein relation allows to take advantage of low-frequency localization and finally leads to photon cooling. The new equation predicts a frequency distribution in agreement with the absolute temperature measurements of the cosmic background radiation down to about 20 MHz, for which we offer here an updated compilation. In that sense, the so called 'space roar' we observe today is interpreted as a nonequilibrium echo of the early universe, and of nonequilibrium conditions in the primordial plasma more specifically. | en_US |
dc.language.iso | eng | en_US |
dc.title | On a possible nonequilibrium imprint in the cosmic background at low frequencies | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1103/PhysRevResearch.2.013210 | en_US |
dc.identifier.isi | WOS:000602502700002 | en_US |
dc.identifier.url | http://arxiv.org/abs/1908.08876v4 | en_US |
dc.identifier.url | https://journals.aps.org/prresearch/pdf/10.1103/PhysRevResearch.2.013210 | en_US |
dc.relation.medium | ELETTRONICO | en_US |
dc.relation.volume | 2 | en_US |
dc.relation.issue | 1 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.international | sì | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | PHYSICAL REVIEW RESEARCH | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2020PhRvR...2a3210B | en_US |
dc.relation.ercsector | ERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation | en_US |
dc.description.apc | no | en_US |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegare il file al passo 5-Carica) | en_US |
item.cerifentitytype | Publications | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
item.grantfulltext | open | - |
item.languageiso639-1 | en | - |
item.openairetype | Article | - |
crisitem.journal.journalissn | 2643-1564 | - |
crisitem.journal.ance | E252540 | - |
crisitem.author.dept | IRA Bologna | - |
crisitem.author.orcid | 0000-0002-3005-5796 | - |
È visualizzato nelle collezioni: | 1.01 Articoli in rivista |
File in questo documento:
File | Descrizione | Dimensioni | Formato | |
---|---|---|---|---|
1908.08876_postprint_including_erratum.pdf | postprint | 745.78 kB | Adobe PDF | Visualizza/apri |
PhysRevResearch.2.013210.pdf | Pdf editoriale | 771.6 kB | Adobe PDF | Visualizza/apri |
PhysRevResearch.2.049001.pdf | Erratum - auxiliary information | 244.96 kB | Adobe PDF | Visualizza/apri |
Page view(s)
34
controllato il 18-lug-2024
Download(s)
27
controllato il 18-lug-2024
Google ScholarTM
Check
Altmetric
Altmetric
Tutti i documenti in DSpace sono pubblicati ad Accesso Aperto, salvo diversa indicazione per alcuni documenti specifici.