The Prompt, High-Resolution Spectroscopic View of the "Naked-Eye" GRB080319B
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. Thi...
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| Tipo de documento: | Artigo |
| Estado: | Published version |
| Data de publicação: | 2009 |
| País: | Argentina |
| Recursos: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositório: | CONICET Digital (CONICET) |
| Idioma: | Inglês |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/20569 |
| Acesso em linha: | http://hdl.handle.net/11336/20569 |
| Nível de acesso: | Acesso aberto |
| Palavra-chave: | gamma rays: bursts https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| _version_ | 1878402826223222784 |
|---|---|
| author | D'Elia, V. |
| author2 | Fiore, F. Perna, R. Krongold, Y. Covino, S. Fugazza, D. Lazzati, D. Nicastro, F. Antonelli, L. A. Campana, S. Chincarini, G. D´Avanzo, P. Della Valle, M. Goldoni, P. Guetta, D. Guidorzi, C, Meuers, E. J. A. Mirabel Miquele, Igor Felix Molinari, E. Norci, L. Piranomonte, S. Stella, L. Stratta, G. Tagliaferri, G. Ward, P. |
| author2_role | author author author author author author author author author author author author author author author author author author author author author author author author |
| author_browse | Antonelli, L. A. Campana, S. Chincarini, G. Covino, S. D'Elia, V. Della Valle, M. D´Avanzo, P. Fiore, F. Fugazza, D. Goldoni, P. Guetta, D. Guidorzi, C, Krongold, Y. Lazzati, D. Meuers, E. J. A. Mirabel Miquele, Igor Felix Molinari, E. Nicastro, F. Norci, L. Perna, R. Piranomonte, S. Stella, L. Stratta, G. Tagliaferri, G. Ward, P. |
| author_facet | D'Elia, V. Fiore, F. Perna, R. Krongold, Y. Covino, S. Fugazza, D. Lazzati, D. Nicastro, F. Antonelli, L. A. Campana, S. Chincarini, G. D´Avanzo, P. Della Valle, M. Goldoni, P. Guetta, D. Guidorzi, C, Meuers, E. J. A. Mirabel Miquele, Igor Felix Molinari, E. Norci, L. Piranomonte, S. Stella, L. Stratta, G. Tagliaferri, G. Ward, P. |
| author_role | author |
| collection | CONICET Digital (CONICET) |
| description | 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. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | AR_0a0ce99f637c35ca703e4c0bc4c6c787 |
| identifier_str_mv | 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 0004-637X CONICET Digital CONICET |
| institution | Consejo Nacional de Investigaciones Científicas y Técnicas |
| instname_str | Consejo Nacional de Investigaciones Científicas y Técnicas |
| language | eng |
| network_acronym_str | AR |
| network_name_str | Argentina |
| oai_identifier_str | oai:ri.conicet.gov.ar:11336/20569 |
| publishDate | 2009 |
| publishDateSort | 2009 |
| publisher | IOP Publishing |
| publisherStr | IOP Publishing |
| reponame_str | CONICET Digital (CONICET) |
| spelling | The Prompt, High-Resolution Spectroscopic View of the "Naked-Eye" GRB080319B D'Elia, V. Fiore, F. Perna, R. Krongold, Y. Covino, S. Fugazza, D. Lazzati, D. Nicastro, F. Antonelli, L. A. Campana, S. Chincarini, G. D´Avanzo, P. Della Valle, M. Goldoni, P. Guetta, D. Guidorzi, C, Meuers, E. J. A. Mirabel Miquele, Igor Felix Molinari, E. Norci, L. Piranomonte, S. Stella, L. Stratta, G. Tagliaferri, G. Ward, P. gamma rays: bursts https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 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. Fil: D'Elia, V.. Osservatorio Astronomico di Roma; Italia Fil: Fiore, F.. Osservatorio Astronomico di Roma; Italia Fil: Perna, R.. State University Of Colorado Boulder; Estados Unidos Fil: Krongold, Y.. Universidad Nacional Autónoma de México; México Fil: Covino, S.. Osservatorio Astronomico di Brera; Italia Fil: Fugazza, D.. Osservatorio Astronomico di Brera; Italia Fil: Lazzati, D.. State University Of Colorado Boulder; Estados Unidos Fil: Nicastro, F.. Osservatorio Astronomico di Roma; Italia Fil: Antonelli, L. A.. Osservatorio Astronomico di Roma; Italia Fil: Campana, S.. Osservatorio Astronomico di Brera; Italia Fil: Chincarini, G.. Osservatorio Astronomico di Brera; Italia Fil: D´Avanzo, P.. Osservatorio Astronomico di Brera; Italia Fil: Della Valle, M.. Osservatorio Astronomico di Capodimonte; Italia Fil: Goldoni, P.. Centre D; Francia Fil: Guetta, D.. Osservatorio Astronomico di Roma; Italia Fil: Guidorzi, C,. Osservatorio Astronomico di Brera; Italia Fil: Meuers, E. J. A.. School of Cosmic Physics; Irlanda 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 Fil: Molinari, E.. Osservatorio Astronomico di Brera; Italia Fil: Norci, L.. School of Physical Sciences; Irlanda Fil: Piranomonte, S.. Osservatorio Astronomico di Roma; Italia Fil: Stella, L.. Osservatorio Astronomico di Roma; Italia Fil: Stratta, G.. ASI Science Data Center; Italia Fil: Tagliaferri, G.. Osservatorio Astronomico di Brera; Italia Fil: Ward, P.. Mullard Space Science Laboratory; Reino Unido IOP Publishing http://hdl.handle.net/11336/20569 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 0004-637X CONICET Digital CONICET |
| spellingShingle | The Prompt, High-Resolution Spectroscopic View of the "Naked-Eye" GRB080319B D'Elia, V. gamma rays: bursts https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| status_str | publishedVersion |
| title | The Prompt, High-Resolution Spectroscopic View of the "Naked-Eye" GRB080319B |
| title_full | The Prompt, High-Resolution Spectroscopic View of the "Naked-Eye" GRB080319B |
| title_fullStr | The Prompt, High-Resolution Spectroscopic View of the "Naked-Eye" GRB080319B |
| title_full_unstemmed | The Prompt, High-Resolution Spectroscopic View of the "Naked-Eye" GRB080319B |
| title_short | The Prompt, High-Resolution Spectroscopic View of the "Naked-Eye" GRB080319B |
| title_sort | The Prompt, High-Resolution Spectroscopic View of the "Naked-Eye" GRB080319B |
| topic | gamma rays: bursts https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| topic_facet | gamma rays: bursts https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| url | http://hdl.handle.net/11336/20569 |