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DM_limits

Ultra-light axions

Cosmological/astrophysical limits (two sigma) on the ultra-light axion energy density vs. particle mass.
Solid = current limit; thick line = projected limit.

Ultra-light axions (cosmological)

Cosmological limits (two sigma) on the ultra-light axion energy density vs. particle mass.
Solid = current limit; thick line = projected limit (Stage IV sensitivity)

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