We present the XMM-Newton observations of X-ray afterglows of the gamma-ray
bursts GRB 011211 and GRB 001025. For GRB 011211 XMM detected fading X-ray
object with an average flux in 0.2-10 keV declining from 2.7Γ10β13
erg cmβ2 sβ1 during the first 5 ks of 27-ks observation to
1.0Γ10β13 erg cmβ2 sβ1 toward the end of the observation.
The spectrum of the afterglow can be fit to a power law with
alpha=2.16Β±0.03 modified for the Galactic absorption. No significant
evolution of spectral parameters has been detected during the observation.
Similar X-ray spectrum with alpha=2.01Β±0.09 has been observed by the XMM
from the GRB 001025. The non-detection of any extra absorption in these spectra
above the Galactic value is an interesting fact and may impose restrictions to
the favorable GRB models involving burst origin in star-forming regions.
Finally we discuss soft X-ray lines from GRB 011211 reported by Reeves et
al.(2002) and conclude that there is no definitive evidence for the presense of
these lines in the spectrum.Comment: submitted to ApJL (7 pages, 4 figures, 2 tables, emulateapj.sty