X-ray line and recombination emission in the afterglow of GRB

S. Sugiyama*, S. Yamada, H. Takabe

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We calculate the time-dependent line and recombination spectrum of nonequilibrium plasma heated by the strong radiation as the test model of X-ray line emission of GRB afterglows. Our calculation shows that the non-equilibrium effect of plasma is complex and important to the time evolution of the spectrum. The origin of these lines puzzles us, but is essential to understand the nature of GRBs and their circumstellar matter.

Original languageEnglish
Pages (from-to)323-326
Number of pages4
JournalAstrophysics and Space Science
Issue number1-2
Publication statusPublished - 2005 Jun 1


  • Afterglow
  • GRB
  • X-ray line

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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