Fig. 7.
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Extended constraints on asteroid-mass PBHs between ∼1018 and ∼1020 g. The red-coloured regions correspond to the 2σ (lighter) and 3σ (darker) excluded values of fPBH. The arrows indicate the directions in which the constraints may be improved in the future. To the left and the right, we show the existing constraints on PBHs arising from evaporation and microlensing.
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