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dc.contributor.author
D'Elia, V.
dc.contributor.author
Fiore, F.
dc.contributor.author
Perna, R.
dc.contributor.author
Krongold, Y.
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Covino, S.
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Fugazza, D.
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Lazzati, D.
dc.contributor.author
Nicastro, F.
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Antonelli, L. A.
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Campana, S.
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Chincarini, G.
dc.contributor.author
D´Avanzo, P.
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Della Valle, M.
dc.contributor.author
Goldoni, P.
dc.contributor.author
Guetta, D.
dc.contributor.author
Guidorzi, C,
dc.contributor.author
Meuers, E. J. A.
dc.contributor.author
Mirabel Miquele, Igor Felix
dc.contributor.author
Molinari, E.
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Norci, L.
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Piranomonte, S.
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Stella, L.
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Stratta, G.
dc.contributor.author
Tagliaferri, G.
dc.contributor.author
Ward, P.
dc.date.available
2017-07-14T17:11:38Z
dc.date.issued
2009-03
dc.identifier.citation
D'Elia, V.; Fiore, F.; Perna, R.; Krongold, Y.; Covino, S.; et al.; The Prompt, High-Resolution Spectroscopic View of the "Naked-Eye" GRB080319B; IOP Publishing; Astrophysical Journal; 694; 1; 3-2009; 332-338
dc.identifier.issn
0004-637X
dc.identifier.uri
http://hdl.handle.net/11336/20569
dc.description.abstract
GRB080319B reached fifth optical magnitude during the burst prompt emission. Thanks to the Very Large Telescope (VLT)/Ultraviolet and Visual Echelle Spectrograph (UVES) rapid response mode, we observed its afterglow just 8m:30s after the gamma-ray burst (GRB) onset when the magnitude was R ~ 12. This allowed us to obtain the best signal-to-noise (S/N), high-resolution spectrum of a GRB afterglow ever (S/N per resolution element ~50). The spectrum is rich of absorption features belonging to the main system at z = 0.937, divided in at least six components spanning a total velocity range of 100 km s<sup>-1</sup>. The VLT/UVES observations caught the absorbing gas in a highly excited state, producing the strongest Fe II fine structure lines ever observed in a GRB. A few hours later, the optical depth of these lines was reduced by a factor of 4-20, and the optical/UV flux by a factor of ~60. This proves that the excitation of the observed fine structure lines is due to "pumping" by the GRB UV photons. comparison of the observed ratio between the number of photons absorbed by the excited state and those in the Fe II ground state suggests that the six absorbers are ~2-6 kpc from the GRB site, with component I ~ 3 times closer to the GRB site than components III-VI. Component I is characterized also by the lack of Mg I absorption, unlike all other components. This may be both due to a closer distance and a lower density, suggesting a structured interstellar matter in this galaxy complex.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
IOP Publishing
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Gamma Rays: Bursts
dc.subject.classification
Astronomía
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Ciencias Físicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
The Prompt, High-Resolution Spectroscopic View of the "Naked-Eye" GRB080319B
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-07-14T14:08:15Z
dc.journal.volume
694
dc.journal.number
1
dc.journal.pagination
332-338
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: D'Elia, V.. Osservatorio Astronomico di Roma; Italia
dc.description.fil
Fil: Fiore, F.. Osservatorio Astronomico di Roma; Italia
dc.description.fil
Fil: Perna, R.. State University Of Colorado Boulder; Estados Unidos
dc.description.fil
Fil: Krongold, Y.. Universidad Nacional Autónoma de México; México
dc.description.fil
Fil: Covino, S.. Osservatorio Astronomico di Brera; Italia
dc.description.fil
Fil: Fugazza, D.. Osservatorio Astronomico di Brera; Italia
dc.description.fil
Fil: Lazzati, D.. State University Of Colorado Boulder; Estados Unidos
dc.description.fil
Fil: Nicastro, F.. Osservatorio Astronomico di Roma; Italia
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Fil: Antonelli, L. A.. Osservatorio Astronomico di Roma; Italia
dc.description.fil
Fil: Campana, S.. Osservatorio Astronomico di Brera; Italia
dc.description.fil
Fil: Chincarini, G.. Osservatorio Astronomico di Brera; Italia
dc.description.fil
Fil: D´Avanzo, P.. Osservatorio Astronomico di Brera; Italia
dc.description.fil
Fil: Della Valle, M.. Osservatorio Astronomico di Capodimonte; Italia
dc.description.fil
Fil: Goldoni, P.. Centre D; Francia
dc.description.fil
Fil: Guetta, D.. Osservatorio Astronomico di Roma; Italia
dc.description.fil
Fil: Guidorzi, C,. Osservatorio Astronomico di Brera; Italia
dc.description.fil
Fil: Meuers, E. J. A.. School of Cosmic Physics; Irlanda
dc.description.fil
Fil: Mirabel Miquele, Igor Felix. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
dc.description.fil
Fil: Molinari, E.. Osservatorio Astronomico di Brera; Italia
dc.description.fil
Fil: Norci, L.. School of Physical Sciences; Irlanda
dc.description.fil
Fil: Piranomonte, S.. Osservatorio Astronomico di Roma; Italia
dc.description.fil
Fil: Stella, L.. Osservatorio Astronomico di Roma; Italia
dc.description.fil
Fil: Stratta, G.. ASI Science Data Center; Italia
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Fil: Tagliaferri, G.. Osservatorio Astronomico di Brera; Italia
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Fil: Ward, P.. Mullard Space Science Laboratory; Reino Unido
dc.journal.title
Astrophysical Journal
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/0004-637X/694/1/332
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1088/0004-637X/694/1/332
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/pdf/0804.2141.pdf
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