View in EDS HTML Full Text PDF Full Text

Early spectra of the gravitational wave source GW170817: Evolution of a neutron star merger.

Saved in:
Bibliographic Details
Title: Early spectra of the gravitational wave source GW170817: Evolution of a neutron star merger.
Authors: Shappee, B. J., Simon, J. D., Drout, M. R., Piro, A. L., Morrell, N., Prieto, J. L., Kasen, D., Holoien, T. W.-S., Kollmeier, J. A., Kelson, D. D., Coulter, D. A., Foley, R. J., Kilpatrick, C. D., Siebert, M. R., Madore, B. F., Murguia-Berthier, A., Pan, Y.-C., Prochaska, J. X., Ramirez-Ruiz, E., Rest, A.
Source: Science (pre-March 2025). 12/22/2017, Vol. 358 Issue 6370, p1574-1578. 5p. 4 Graphs.
Subjects: Gravitational waves, Supernovae, Neutron stars, Supernova remnants, Time series analysis, Spectrum analysis
Abstract: On 17 August 2017, Swope Supernova Survey 2017a (SSS17a) was discovered as the optical counterpart of the binary neutron star gravitational wave event GW170817. We report time-series spectroscopy of SSS17a from 11.75 hours until 8.5 days after the merger. Over the first hour of observations, the ejecta rapidly expanded and cooled. Applying blackbody fits to the spectra, we measured the photosphere cooling from 11,000+3400-900 to 9300+300-300 kelvin, and determined a photospheric velocity of roughly 30% of the speed of light. The spectra of SSS17a began displaying broad features after 1.46 days and evolved qualitatively over each subsequent day, with distinct blue (early-time) and red (late-time) components. The late-time component is consistent with theoretical models of r-process–enriched neutron star ejecta, whereas the blue component requires high-velocity, lanthanide-free material. [ABSTRACT FROM AUTHOR]
Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
Full text is not displayed to guests.
FullText Links:
  – Type: pdflink
Text:
  Availability: 1
Header DbId: pbh
DbLabel: Psychology and Behavioral Sciences Collection
An: 127171713
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Early spectra of the gravitational wave source GW170817: Evolution of a neutron star merger.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Shappee%2C+B%2E+J%2E%22">Shappee, B. J.</searchLink><br /><searchLink fieldCode="AR" term="%22Simon%2C+J%2E+D%2E%22">Simon, J. D.</searchLink><br /><searchLink fieldCode="AR" term="%22Drout%2C+M%2E+R%2E%22">Drout, M. R.</searchLink><br /><searchLink fieldCode="AR" term="%22Piro%2C+A%2E+L%2E%22">Piro, A. L.</searchLink><br /><searchLink fieldCode="AR" term="%22Morrell%2C+N%2E%22">Morrell, N.</searchLink><br /><searchLink fieldCode="AR" term="%22Prieto%2C+J%2E+L%2E%22">Prieto, J. L.</searchLink><br /><searchLink fieldCode="AR" term="%22Kasen%2C+D%2E%22">Kasen, D.</searchLink><br /><searchLink fieldCode="AR" term="%22Holoien%2C+T%2E+W%2E-S%2E%22">Holoien, T. W.-S.</searchLink><br /><searchLink fieldCode="AR" term="%22Kollmeier%2C+J%2E+A%2E%22">Kollmeier, J. A.</searchLink><br /><searchLink fieldCode="AR" term="%22Kelson%2C+D%2E+D%2E%22">Kelson, D. D.</searchLink><br /><searchLink fieldCode="AR" term="%22Coulter%2C+D%2E+A%2E%22">Coulter, D. A.</searchLink><br /><searchLink fieldCode="AR" term="%22Foley%2C+R%2E+J%2E%22">Foley, R. J.</searchLink><br /><searchLink fieldCode="AR" term="%22Kilpatrick%2C+C%2E+D%2E%22">Kilpatrick, C. D.</searchLink><br /><searchLink fieldCode="AR" term="%22Siebert%2C+M%2E+R%2E%22">Siebert, M. R.</searchLink><br /><searchLink fieldCode="AR" term="%22Madore%2C+B%2E+F%2E%22">Madore, B. F.</searchLink><br /><searchLink fieldCode="AR" term="%22Murguia-Berthier%2C+A%2E%22">Murguia-Berthier, A.</searchLink><br /><searchLink fieldCode="AR" term="%22Pan%2C+Y%2E-C%2E%22">Pan, Y.-C.</searchLink><br /><searchLink fieldCode="AR" term="%22Prochaska%2C+J%2E+X%2E%22">Prochaska, J. X.</searchLink><br /><searchLink fieldCode="AR" term="%22Ramirez-Ruiz%2C+E%2E%22">Ramirez-Ruiz, E.</searchLink><br /><searchLink fieldCode="AR" term="%22Rest%2C+A%2E%22">Rest, A.</searchLink>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Science+%28pre-March+2025%29%22">Science (pre-March 2025)</searchLink>. 12/22/2017, Vol. 358 Issue 6370, p1574-1578. 5p. 4 Graphs.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Gravitational+waves%22">Gravitational waves</searchLink><br /><searchLink fieldCode="DE" term="%22Supernovae%22">Supernovae</searchLink><br /><searchLink fieldCode="DE" term="%22Neutron+stars%22">Neutron stars</searchLink><br /><searchLink fieldCode="DE" term="%22Supernova+remnants%22">Supernova remnants</searchLink><br /><searchLink fieldCode="DE" term="%22Time+series+analysis%22">Time series analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Spectrum+analysis%22">Spectrum analysis</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: On 17 August 2017, Swope Supernova Survey 2017a (SSS17a) was discovered as the optical counterpart of the binary neutron star gravitational wave event GW170817. We report time-series spectroscopy of SSS17a from 11.75 hours until 8.5 days after the merger. Over the first hour of observations, the ejecta rapidly expanded and cooled. Applying blackbody fits to the spectra, we measured the photosphere cooling from 11,000+3400-900 to 9300+300-300 kelvin, and determined a photospheric velocity of roughly 30% of the speed of light. The spectra of SSS17a began displaying broad features after 1.46 days and evolved qualitatively over each subsequent day, with distinct blue (early-time) and red (late-time) components. The late-time component is consistent with theoretical models of r-process–enriched neutron star ejecta, whereas the blue component requires high-velocity, lanthanide-free material. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=pbh&AN=127171713
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1126/science.aaq0186
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 5
        StartPage: 1574
    Subjects:
      – SubjectFull: Gravitational waves
        Type: general
      – SubjectFull: Supernovae
        Type: general
      – SubjectFull: Neutron stars
        Type: general
      – SubjectFull: Supernova remnants
        Type: general
      – SubjectFull: Time series analysis
        Type: general
      – SubjectFull: Spectrum analysis
        Type: general
    Titles:
      – TitleFull: Early spectra of the gravitational wave source GW170817: Evolution of a neutron star merger.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Shappee, B. J.
      – PersonEntity:
          Name:
            NameFull: Simon, J. D.
      – PersonEntity:
          Name:
            NameFull: Drout, M. R.
      – PersonEntity:
          Name:
            NameFull: Piro, A. L.
      – PersonEntity:
          Name:
            NameFull: Morrell, N.
      – PersonEntity:
          Name:
            NameFull: Prieto, J. L.
      – PersonEntity:
          Name:
            NameFull: Kasen, D.
      – PersonEntity:
          Name:
            NameFull: Holoien, T. W.-S.
      – PersonEntity:
          Name:
            NameFull: Kollmeier, J. A.
      – PersonEntity:
          Name:
            NameFull: Kelson, D. D.
      – PersonEntity:
          Name:
            NameFull: Coulter, D. A.
      – PersonEntity:
          Name:
            NameFull: Foley, R. J.
      – PersonEntity:
          Name:
            NameFull: Kilpatrick, C. D.
      – PersonEntity:
          Name:
            NameFull: Siebert, M. R.
      – PersonEntity:
          Name:
            NameFull: Madore, B. F.
      – PersonEntity:
          Name:
            NameFull: Murguia-Berthier, A.
      – PersonEntity:
          Name:
            NameFull: Pan, Y.-C.
      – PersonEntity:
          Name:
            NameFull: Prochaska, J. X.
      – PersonEntity:
          Name:
            NameFull: Ramirez-Ruiz, E.
      – PersonEntity:
          Name:
            NameFull: Rest, A.
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 22
              M: 12
              Text: 12/22/2017
              Type: published
              Y: 2017
          Identifiers:
            – Type: issn-print
              Value: 00368075
          Numbering:
            – Type: volume
              Value: 358
            – Type: issue
              Value: 6370
          Titles:
            – TitleFull: Science (pre-March 2025)
              Type: main
ResultId 1