Which timescale is associated with Interstellar Dust dimming, unlike Atmospheric Turbulence?
Answer
Days to Years.
The timescales associated with different dimming mechanisms provide strong clues to their cause. Atmospheric Turbulence causes rapid, momentary changes observable over Seconds to Minutes, related to instantaneous air movement. In contrast, dimming caused by Interstellar Dust, as exemplified by KIC 8462852, manifests as deep dips that can last for Days to Years, reflecting the slow transit time of large obscuring structures through the line of sight. Stellar Death processes occur over immensely longer scales, while Eclipsing Binaries and Pulsation operate on shorter, though still predictable, cycles.
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