Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/31845
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Tamburini, Fabrizio | en_US |
dc.contributor.author | Thidé, Bo | en_US |
dc.contributor.author | DELLA VALLE, Massimo | en_US |
dc.date.accessioned | 2022-03-24T10:08:58Z | - |
dc.date.available | 2022-03-24T10:08:58Z | - |
dc.date.issued | 2020 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/31845 | - |
dc.description.abstract | We present the first observational evidence that light propagating near a rotating black hole is twisted in phase and carries orbital angular momentum (OAM). This physical observable allows a direct measurement of the rotation of the black hole. We extracted the OAM spectra from the radio intensity data collected by the Event Horizon Telescope from around the black hole M87* by using wavefront reconstruction and phase recovery techniques and from the visibility amplitude and phase maps. This method is robust and complementary to black hole shadow circularity analyses. It shows that the M87* rotates clockwise with an estimated rotation parameter a = 0.90 ± 0.05 with an ∼ 95{{ per cent}} confidence level (c.l.) and an inclination I = 17° ± 2°, equivalent to a magnetic arrested disc with an inclination I = 163° ± 2°. From our analysis, we conclude that, within a 6σ c.l., the M87* is rotating. | en_US |
dc.language.iso | eng | en_US |
dc.title | Measurement of the spin of the M87 black hole from its observed twisted light | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnrasl/slz176 | en_US |
dc.identifier.scopus | 2-s2.0-85079752019 | en_US |
dc.identifier.url | https://academic.oup.com/mnrasl/article-abstract/492/1/L22/5645245?redirectedFrom=fulltext | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 492 | en_US |
dc.relation.issue | 1 | en_US |
dc.relation.firstpage | L22 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.international | sì | en_US |
dc.contributor.country | ITA | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2020MNRAS.492L..22T | 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 | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
crisitem.author.dept | O.A. Capodimonte | - |
crisitem.author.orcid | 0000-0003-3142-5020 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Page view(s)
274
checked on Jul 22, 2024
Download(s)
32
checked on Jul 22, 2024
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are published in Open Access, unless otherwise indicated.