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http://hdl.handle.net/20.500.12386/31982
Campo DC | Valore | Lingua |
---|---|---|
dc.contributor.author | Bruni, Gabriele | en_US |
dc.contributor.author | O'Connor, B. | en_US |
dc.contributor.author | Matsumoto, T. | en_US |
dc.contributor.author | Troja, E. | en_US |
dc.contributor.author | Piran, T. | en_US |
dc.contributor.author | PIRO, LUIGI | en_US |
dc.contributor.author | RICCI, ROBERTO | en_US |
dc.date.accessioned | 2022-03-28T15:29:49Z | - |
dc.date.available | 2022-03-28T15:29:49Z | - |
dc.date.issued | 2021 | en_US |
dc.identifier.issn | 1745-3925 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/31982 | - |
dc.description.abstract | GRB200522A is a short duration gamma-ray burst (GRB) at redshift $z$=0.554 characterized by a bright infrared counterpart. A possible, although not unambiguous, interpretation of the observed emission is the onset of a luminous kilonova powered by a rapidly rotating and highly-magnetized neutron star, known as magnetar. A bright radio flare, arising from the interaction of the kilonova ejecta with the surrounding medium, is a prediction of this model. Whereas the available dataset remains open to multiple interpretations (e.g. afterglow, r-process kilonova, magnetar-powered kilonova), long-term radio monitoring of this burst may be key to discriminate between models. We present our late-time upper limit on the radio emission of GRB200522A, carried out with the Karl G. Jansky Very Large Array at 288 days after the burst. For kilonova ejecta with energy $E_{\rm ej} \approx 10^{53} \rm erg$, as expected for a long-lived magnetar remnant, we can already rule out ejecta masses $M_{\rm ej} \lesssim0.03 \mathrm{M}_\odot$ for the most likely range of circumburst densities $n\gtrsim 10^{-3}$ cm$^{-3}$. Observations on timescales of $\approx$3-10 yr after the merger will probe larger ejecta masses up to $M_{\rm ej} \sim 0.1 \mathrm{M}_\odot$, providing a robust test to the magnetar scenario. | en_US |
dc.language.iso | eng | en_US |
dc.title | Late-time radio observations of the short GRB200522A: constraints on the magnetar model | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnrasl/slab046 | en_US |
dc.identifier.scopus | 2-s2.0-85107880824 | en_US |
dc.identifier.url | http://arxiv.org/abs/2105.01440v1 | en_US |
dc.identifier.url | https://academic.oup.com/mnrasl/article/505/1/L41/6271321?login=true | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 505 | en_US |
dc.relation.issue | 1 | en_US |
dc.relation.firstpage | L41 | en_US |
dc.relation.lastpage | L45 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.numberofauthors | 7 | en_US |
dc.description.international | sì | en_US |
dc.contributor.country | ITA | en_US |
dc.contributor.country | USA | en_US |
dc.contributor.country | JPN | en_US |
dc.contributor.country | ISR | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. LETTERS | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.relation.fund | H2020 | en_US |
dc.relation.project | AHEAD2020 (Integrated Activities for the High Energy Astrophysics Domain) | 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.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.openairetype | Article | - |
item.languageiso639-1 | en | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | IAPS Roma | - |
crisitem.author.dept | IAPS Roma | - |
crisitem.author.orcid | 0000-0002-5182-6289 | - |
crisitem.author.orcid | 0000-0003-4159-3984 | - |
crisitem.author.orcid | 0000-0003-4631-1528 | - |
crisitem.project.grantno | 871158 | - |
crisitem.journal.journalissn | 1745-3925 | - |
crisitem.journal.ance | E205843 | - |
È visualizzato nelle collezioni: | 1.01 Articoli in rivista |
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File | Descrizione | Dimensioni | Formato | |
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2105.01440.pdf | postprint | 1.3 MB | Adobe PDF | Visualizza/apri |
slab046.pdf | Pdf editoriale | 678.69 kB | Adobe PDF | Visualizza/apri |
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