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  • Gröningsson, PerStockholms universitet,Institutionen för astronomi,Stockholm University (author)

Coronal emission from the shocked circumstellar ring of SN 1987A

  • Article/chapterEnglish2006

Publisher, publication year, extent ...

  • 2006-08-31
  • EDP Sciences,2006
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:su-20166
  • https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-20166URI
  • https://doi.org/10.1051/0004-6361:20065325DOI
  • https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-86985URI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • QC 20120301
  • High resolution spectra with UVES/VLT of SN 1987A from December 2000 until November 2005 show a number of high ionization lines from gas with velocities of ± 350 km s-1, emerging from the shocked gas formed by the ejecta-ring collision. These include coronal lines from [Fe X], [Fe XI] and [Fe XIV] which have increased by a factor of 20 during the observed period. The evolution of the lines is similar to that of the soft X-rays, indicating that they arise in the same component. The line ratios are consistent with those expected from radiative shocks with velocity 310{-}390 km s-1, corresponding to a shock temperature of (1.6{-}2.5)× 106 K. A fraction of the coronal emission may, however, originate in higher velocity adiabatic shocks.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Fransson, ClaesStockholms universitet,Institutionen för astronomi,Stockholm University(Swepub:su)frans (author)
  • Lundqvist, PeterStockholms universitet,Institutionen för astronomi,Stockholm University(Swepub:su)lundq (author)
  • Nymark, TanjaStockholms universitet,Institutionen för astronomi,Stockholm University(Swepub:kth)u14p8rnp (author)
  • Lundqvist, Natalia,1974-Stockholms universitet,Institutionen för astronomi,Stockholm University(Swepub:su)nase1600 (author)
  • Chevalier, R. (author)
  • Leibundgut, B. (author)
  • Spyromilio, J. (author)
  • Stockholms universitetInstitutionen för astronomi (creator_code:org_t)

Related titles

  • In:Astronomy and Astrophysics: EDP Sciences456:2, s. 581-5890004-63611432-0746

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