2381/808 D. Watson D. Watson J.N. Reeves J.N. Reeves Julian P. Osborne Julian P. Osborne Paul T. O'Brien Paul T. O'Brien Kenneth A. Pounds Kenneth A. Pounds Jonathan A. Tedds Jonathan A. Tedds M. Santos-Lleó M. Santos-Lleó M. Ehle M. Ehle The X-ray afterglows of gamma-ray bursts GRB001025A and GRB010220 observed with XMM-Newton University of Leicester 2009 gamma rays: bursts supernovae: general X-rays: general 2009-12-08 16:25:15 Journal contribution https://figshare.le.ac.uk/articles/journal_contribution/The_X-ray_afterglows_of_gamma-ray_bursts_GRB001025A_and_GRB010220_observed_with_XMM-Newton/10090397 The X-ray afterglows of GRB 001025A and GRB 010220 were detected by XMM-Newton with an average 0.2-10.0 keV flux of 4.4 and 3.3 X 10[superscript -14] erg cm[superscript -2] s[superscript -1] respectively; the afterglow of GRB 001025A is observed to decay. Afterglows at other wavelengths were not detected for either burst. A set of broadened soft X-ray emission lines are detected in the afterglow of GRB 001025A, at 5.0 σ significance above a Galactic-absorbed power-law continuum. The spectra of both afterglows are significantly better fit by a variable abundance thermal plasma model than by an absorbed power-law and are consistent with the observations of GRB 011211, indicating that thermal emission from light elements may be common in the early X-ray afterglows of GRBs.