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http://hdl.handle.net/20.500.12386/30744
Campo DC | Valore | Lingua |
---|---|---|
dc.contributor.author | Troja, E. | en_US |
dc.contributor.author | van Eerten, H. | en_US |
dc.contributor.author | Ryan, G. | en_US |
dc.contributor.author | Ricci, R. | en_US |
dc.contributor.author | Burgess, J. M. | en_US |
dc.contributor.author | Wieringa, M. H. | en_US |
dc.contributor.author | PIRO, LUIGI | en_US |
dc.contributor.author | Cenko, S. B. | en_US |
dc.contributor.author | Sakamoto, T. | en_US |
dc.date.accessioned | 2021-04-13T11:08:29Z | - |
dc.date.available | 2021-04-13T11:08:29Z | - |
dc.date.issued | 2019 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/30744 | - |
dc.description.abstract | We present the results of our year-long afterglow monitoring of GW 170817, the first binary neutron star merger detected by Advanced Laser Interferometer Gravitational-Wave Observatory (LIGO) and Advanced Virgo. New observations with the Australian Telescope Compact Array and the Chandra X-ray Telescope were used to constrain its late-time behaviour. The broad-band emission, from radio to X-rays, is well-described by a simple power-law spectrum with index β ∼ 0.585 at all epochs. After an initial shallow rise ∝t<SUP>0.9</SUP>, the afterglow displayed a smooth turnover, reaching a peak X-ray luminosity of L<SUB>X</SUB> ≈ 5 × 10<SUP>39</SUP> erg s<SUP>-1</SUP> at 160 d, and has now entered a phase of rapid decline, approximately ∝t<SUP>-2</SUP>. The latest temporal trend challenges most models of choked jet/cocoon systems, and is instead consistent with the emergence of a relativistic structured jet seen at an angle of ≈22° from its axis. Within such model, the properties of the explosion (such as its blast wave energy E<SUB>K</SUB> ≈ 2 × 10<SUP>50</SUP> erg, jet width θ<SUB>c</SUB> ≈ 4°, and ambient density n ≈ 3 × 10<SUP>-3</SUP> cm<SUP>-3</SUP>) fit well within the range of properties of cosmological short gamma-ray bursts. | en_US |
dc.language.iso | eng | en_US |
dc.title | A year in the life of GW 170817: the rise and fall of a structured jet from a binary neutron star merger | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/stz2248 | en_US |
dc.identifier.scopus | 2-s2.0-85074485383 | en_US |
dc.identifier.isi | 000489298100031 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article/489/2/1919/5549529 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 489 | en_US |
dc.relation.issue | 2 | en_US |
dc.relation.firstpage | 1919 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.numberofauthors | 9 | 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 | 2019MNRAS.489.1919T | 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 | IAPS Roma | - |
crisitem.author.orcid | 0000-0003-4159-3984 | - |
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stz2248.pdf | Pdf editoriale | 1.63 MB | Adobe PDF | Visualizza/apri |
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