Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/26865
DC Field | Value | Language |
---|---|---|
dc.contributor.author | COVINO, Stefano | en_US |
dc.contributor.author | Wiersema, K. | en_US |
dc.contributor.author | Fan, Y. Z. | en_US |
dc.contributor.author | Toma, K. | en_US |
dc.contributor.author | Higgins, A. B. | en_US |
dc.contributor.author | MELANDRI, Andrea | en_US |
dc.contributor.author | D'AVANZO, Paolo | en_US |
dc.contributor.author | Mundell, C. G. | en_US |
dc.contributor.author | PALAZZI, ELIANA | en_US |
dc.contributor.author | Tanvir, N. R. | en_US |
dc.contributor.author | BERNARDINI, Maria Grazia | en_US |
dc.contributor.author | Branchesi, M. | en_US |
dc.contributor.author | BROCATO, Enzo | en_US |
dc.contributor.author | CAMPANA, Sergio | en_US |
dc.contributor.author | di Serego Alighieri, S. | en_US |
dc.contributor.author | Götz, D. | en_US |
dc.contributor.author | Fynbo, J. P. U. | en_US |
dc.contributor.author | Gao, W. | en_US |
dc.contributor.author | Gomboc, A. | en_US |
dc.contributor.author | Gompertz, B. | en_US |
dc.contributor.author | Greiner, J. | en_US |
dc.contributor.author | Hjorth, J. | en_US |
dc.contributor.author | Jin, Z. P. | en_US |
dc.contributor.author | Kaper, L. | en_US |
dc.contributor.author | Klose, S. | en_US |
dc.contributor.author | Kobayashi, S. | en_US |
dc.contributor.author | Kopac, D. | en_US |
dc.contributor.author | Kouveliotou, C. | en_US |
dc.contributor.author | Levan, A. J. | en_US |
dc.contributor.author | Mao, J. | en_US |
dc.contributor.author | Malesani, D. | en_US |
dc.contributor.author | PIAN, Elena | en_US |
dc.contributor.author | ROSSI, Andrea | en_US |
dc.contributor.author | SALVATERRA, Ruben | en_US |
dc.contributor.author | Starling, R. L. C. | en_US |
dc.contributor.author | Steele, I. | en_US |
dc.contributor.author | TAGLIAFERRI, Gianpiero | en_US |
dc.contributor.author | Troja, E. | en_US |
dc.contributor.author | van der Horst, A. J. | en_US |
dc.contributor.author | Wijers, R. A. M. J. | en_US |
dc.date.accessioned | 2020-08-27T09:33:43Z | - |
dc.date.available | 2020-08-27T09:33:43Z | - |
dc.date.issued | 2017 | en_US |
dc.identifier.issn | 2397-3366 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/26865 | - |
dc.description.abstract | The merger of two dense stellar remnants including at least one neutron star is predicted to produce gravitational waves (GWs) and short-duration gamma ray bursts<SUP>1,2</SUP>. In the process, neutron-rich material is ejected from the system and heavy elements are synthesized by r-process nucleosynthesis<SUP>1,3</SUP>. The radioactive decay of these heavy elements produces additional transient radiation termed kilonova or macronova<SUP>4-10</SUP>. We report the detection of linear optical polarization, P = (0.50 ± 0.07)%, 1.46 days after detection of the GWs from GW 170817—a double neutron star merger associated with an optical macronova counterpart and a short gamma ray burst<SUP>11-14</SUP>. The optical emission from a macronova is expected to be characterized by a blue, rapidly decaying component and a red, more slowly evolving component due to material rich in heavy elements—the lanthanides<SUP>15</SUP>. The polarization measurement was made when the macronova was still in its blue phase, during which there was an important contribution from a lanthanide-free outflow. The low degree of polarization is consistent with intrinsically unpolarized emission scattered by galactic dust, suggesting a symmetric geometry of the emitting region and low inclination of the merger system. Stringent upper limits to the polarization degree from 2.45-9.48 days post-burst are consistent with the lanthanides-rich macronova interpretation. | en_US |
dc.language.iso | eng | en_US |
dc.title | The unpolarized macronova associated with the gravitational wave event GW 170817 | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1038/s41550-017-0285-z | en_US |
dc.identifier.scopus | 2-s2.0-85037074281 | en_US |
dc.identifier.isi | 000415271700008 | en_US |
dc.identifier.url | https://www.nature.com/articles/s41550-017-0285-z | en_US |
dc.relation.medium | ELETTRONICO | en_US |
dc.relation.volume | 1 | en_US |
dc.relation.firstpage | 791 | 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 ASTRONOMY | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2017NatAs...1..791C | 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::PE9_6 Stars and stellar systems | 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 | O.A. Brera | - |
crisitem.author.dept | O.A. Roma | - |
crisitem.author.dept | O.A. Brera | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.dept | O.A. Brera | - |
crisitem.author.dept | O.A. Abruzzo | - |
crisitem.author.dept | O.A. Brera | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.dept | IASF Milano | - |
crisitem.author.dept | O.A. Brera | - |
crisitem.author.orcid | 0000-0001-9078-5507 | - |
crisitem.author.orcid | 0000-0002-2810-2143 | - |
crisitem.author.orcid | 0000-0001-7164-1508 | - |
crisitem.author.orcid | 0000-0002-8691-7666 | - |
crisitem.author.orcid | 0000-0001-6106-3046 | - |
crisitem.author.orcid | 0000-0001-7988-8177 | - |
crisitem.author.orcid | 0000-0001-6278-1576 | - |
crisitem.author.orcid | 0000-0001-8646-4858 | - |
crisitem.author.orcid | 0000-0002-8860-6538 | - |
crisitem.author.orcid | 0000-0002-9393-8078 | - |
crisitem.author.orcid | 0000-0003-0121-0723 | - |
crisitem.journal.journalissn | 2397-3366 | - |
crisitem.journal.ance | E240167 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
1710.05849 | preprint | 226.08 kB | Adobe PDF | View/Open |
s41550-017-0285-z.pdf | [Administrators only] | 1.1 MB | Adobe PDF |
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