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Published July 23, 2021 | Version v1
Poster Open

An Automated All-Sky Search for Superflares with TESS

  • 1. University of Washington

Description

We present the results of an automated search for superflare events using 2 minute light curve data from the first two years of the TESS mission (sectors 1-26). In order to determine the properties of the targets and to measure flare energies, we restrict ourselves to objects which have distance and color measurements from Gaia. Flare events are found by first detrending the light curves using an iterative gaussian process fit and then searching for outliers with a change-point analysis technique. In total, we identify 27,229 flare events from 7,260 different stars. As a byproduct of the gaussian process detrending, we also provide robust rotation period measurements for about 80,000 stars in the sample. We find a decreasing correlation between flare rate and rotation period, and also find a decreasing trend between flare rate and galactic height. Both of these results are consistent with flare rate diminishing with age.

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References

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