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The soft scattering controversy Hard limit: All radiation within cone gets Thomson-scattered For 90°: 10%, 45°: 2.4% 179: 5%-10% Options: Not enough. No other indications. Not particularly high luminosity (L=1043.3 erg/s for 179) Ruled out by model selection 179 was in the first 1Ms sometimes brighter, by factor of 3. other 3 sources do not show any sign of variation. need >30