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Piper Stacey
Public Documents
1
Is it Possible to Observe Megastructures with TESS?
Piper Stacey
and 6 more
August 05, 2020
We present the quantifiable limits of observation of artificial megastructures within TESS data. We characterize observability using a ratio of the in-transit RMS residuals and the out-of-transit RMS residuals. We measure a percent difference in circularity (a non-circularity index) by summing the artificial object’s pixels that do not fall within the pixel area of the planet. We have determined an observability threshold using our observability index to be O = 3. At this threshold, given simulated standard TESS noise (gaussian with a zero mean and standard deviation dependent upon the individual star’s TESS magnitude), we quantity the non-circularity of an artificial object in order to be observable.