Very different X-ray to optical column density ratios in gamma-ray burst afterglows: ionisation in GRB environments

D. Watson, J. Hjorth, J. Fynbo, P. Jakobsson, S. Foley, J. Sollerman, R.A.M.J. Wijers

    Research output: Contribution to journalArticlepeer-review

    80 Citations (Scopus)
    Original languageEnglish
    Article numberL101
    JournalThe Astrophysical Journal
    Issue number2
    Publication statusPublished - 2007

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