CURVATURE EFFECT OF A NON-POWER-LAW SPECTRUM AND SPECTRAL EVOLUTION OF GRB X-RAY TAILS
CURVATURE EFFECT OF A NON-POWER-LAW SPECTRUM AND SPECTRAL EVOLUTION OF GRB X-RAY TAILS
The apparent spectral evolution observed in the steep decay phase of many gamma-ray burst (GRB) early afterglows raises great concern about the high-latitude "curvature effect" interpretation of this phase. However, previous curvature effect models only invoked a simple power-law spectrum upon the cessation of the prompt internal emission. We investigate …