Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/28999
Campo DC | Valore | Lingua |
---|---|---|
dc.contributor.author | Watson, Darach | en_US |
dc.contributor.author | Hansen, Camilla J. | en_US |
dc.contributor.author | Selsing, Jonatan | en_US |
dc.contributor.author | Koch, Andreas | en_US |
dc.contributor.author | Malesani, Daniele B. | en_US |
dc.contributor.author | Andersen, Anja C. | en_US |
dc.contributor.author | Fynbo, Johan P. U. | en_US |
dc.contributor.author | Arcones, Almudena | en_US |
dc.contributor.author | Bauswein, Andreas | en_US |
dc.contributor.author | COVINO, Stefano | en_US |
dc.contributor.author | GRADO, ANIELLO | en_US |
dc.contributor.author | Heintz, Kasper E. | en_US |
dc.contributor.author | HUNT, Leslie Kipp | en_US |
dc.contributor.author | Kouveliotou, Chryssa | en_US |
dc.contributor.author | Leloudas, Giorgos | en_US |
dc.contributor.author | Levan, Andrew J. | en_US |
dc.contributor.author | Mazzali, Paolo | en_US |
dc.contributor.author | PIAN, Elena | en_US |
dc.date.accessioned | 2020-12-18T11:15:09Z | - |
dc.date.available | 2020-12-18T11:15:09Z | - |
dc.date.issued | 2019 | en_US |
dc.identifier.issn | 0028-0836 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/28999 | - |
dc.description.abstract | Half of all of the elements in the Universe that are heavier than iron were created by rapid neutron capture. The theory underlying this astrophysical r-process was worked out six decades ago, and requires an enormous neutron flux to make the bulk of the elements<SUP>1</SUP>. Where this happens is still debated<SUP>2</SUP>. A key piece of evidence would be the discovery of freshly synthesized r-process elements in an astrophysical site. Existing models<SUP>3-5</SUP> and circumstantial evidence<SUP>6</SUP> point to neutron-star mergers as a probable r-process site; the optical/infrared transient known as a `kilonova' that emerges in the days after a merger is a likely place to detect the spectral signatures of newly created neutron-capture elements<SUP>7-9</SUP>. The kilonova AT2017gfo—which was found following the discovery of the neutron-star merger GW170817 by gravitational-wave detectors<SUP>10</SUP>—was the first kilonova for which detailed spectra were recorded. When these spectra were first reported<SUP>11,12</SUP>, it was argued that they were broadly consistent with an outflow of radioactive heavy elements; however, there was no robust identification of any one element. Here we report the identification of the neutron-capture element strontium in a reanalysis of these spectra. The detection of a neutron-capture element associated with the collision of two extreme-density stars establishes the origin of r-process elements in neutron-star mergers, and shows that neutron stars are made of neutron-rich matter 13 | en_US |
dc.language.iso | eng | en_US |
dc.title | Identification of strontium in the merger of two neutron stars | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1038/s41586-019-1676-3 | en_US |
dc.identifier.scopus | 2-s2.0-85074063293 | en_US |
dc.identifier.isi | 000492991700043 | en_US |
dc.identifier.url | https://www.nature.com/articles/s41586-019-1676-3 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 574 | en_US |
dc.relation.issue | 7779 | en_US |
dc.relation.firstpage | 497 | 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 | NATURE | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2019Natur.574..497W | 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 | 0028-0836 | - |
crisitem.journal.ance | E116312 | - |
crisitem.author.dept | O.A. Brera | - |
crisitem.author.dept | O.A. Capodimonte | - |
crisitem.author.dept | O.A. Arcetri | - |
crisitem.author.orcid | 0000-0001-9078-5507 | - |
crisitem.author.orcid | 0000-0002-0501-8256 | - |
crisitem.author.orcid | 0000-0001-9162-2371 | - |
È visualizzato nelle collezioni: | 1.01 Articoli in rivista |
File in questo documento:
File | Descrizione | Dimensioni | Formato | |
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s41586-019-1676-3.pdf | Pdf editoriale | 11.4 MB | Adobe PDF | Visualizza/apri |
28999-s41586-019-1676-3_P01.pdf | Miur | 4.92 MB | Adobe PDF | |
28999-s41586-019-1676-3_P02.pdf | Miur | 6.74 MB | Adobe PDF |
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