Modeling the iron line in GRB afterglows

Details Modeling the iron line in GRB afterglows Modeling the iron line in GRB afterglows

Sep 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aipc..526..519b&link_type=abstract

GAMMA-RAY BURSTS: 5th Huntsville Symposium. AIP Conference Proceedings, Volume 526, pp. 519-523 (2000).

Mathematics

Logic

2

Jets And Bursts, Galactic Winds And Fountains, Gamma-Ray Sources, Gamma-Ray Bursts, Statistical And Correlative Studies Of Properties

Scientific paper

The time and angle dependent yield of fluorescence line and continuum emission from a dense torus around a cosmological gamma-ray burst (GRB) source is simulated, taking into account photoionization, collisional ionization, recombination, and the self-consistent electron heating and cooling. A model calculation to reproduce the Fe Kα line emission observed in the X-ray afterglow of GRB 970508 indicates that ~10-4 Msolar of iron must be concentrated in a metal-enriched region of R<~10-3 pc of extent. Similar scenarios from misaligned GRBs may result in observable X-ray flashes with strong emission line features. .

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