The Boyajian's Star Photometric Anomalies: Cometary Swarms vs. Circumstellar Inhomogeneous Dust
“What physical astrophysical mechanism generates deep, asymmetric, aperiodic dips and secular dimming around an ordinary F3V star?”
Discovered in Kepler mission data in 2015, KIC 8462852 (Boyajian's Star) exhibited unprecedented, non-periodic optical flux drops of up to 22%, combined with a multi-century secular dimming trend observed in archival Harvard plates. While early sensationalist hypotheses invoked alien megastructures (Dyson swarms), multi-wavelength ground-based photometry definitively established that the dips are chromatic: blue light is extinguished more efficiently than red light, consistent with sub-micron circum-stellar dust grains from evaporating exocomets or shredded planetesimals.