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X-ray Evolution of SNR 1987A: The Radial Expansion
Judith L. Racusin, Sangwook Park, Svetozar Zhekov +3
We present the evolution of the radial expansion of SNR 1987A as measured using Chandra X-ray observations taken over the last 10 years. To characterize the complex structure of th…
GRB 090423 at a redshift of z~8.1
R. Salvaterra, M. Della Valle, S. Campana +42
Gamma-ray bursts (GRBSs) are produced by rare types of massive stellar explosions. Their rapidly fading afterglows are often bright enough at optical wavelengths, that they are det…
Optical Classification of Gamma-Ray Bursts in the Swift Era
A. J. van der Horst, C. Kouveliotou, N. Gehrels +5
We propose a new method for the classification of optically dark gamma-ray bursts (GRBs), based on the X-ray and optical-to-X-ray spectral indices of GRB afterglows, and utilizing…