Detection of a peculiar noise type in the TESS "fast" light curves

Abstract

We present the detection of a peculiar high-frequency noise component in the 20 second cadence SAP (Simple Aperture Photometry) light curve of TESS (Transiting Exoplanets Survey Satellite). This effect (labeled as blue noise) may be attributed to the pointing instability (also known as satellite jiiter) of the satellite. We present a common technique used in the mitigation of the jitter, by decorrelating against the subpixel position of the photo-center of the point spread function of the star. We also show that a simple linear or polynomial technique may not yield satisfactory corrections, as the behavior or attitude of the noise properties may change considerably throughout the light curve.

Published as a Research Note of the AAS

References in corpus (5)

• The Transiting Exoplanet Survey Satellite
• A Technique for Extracting Highly Precise Photometry for the Two-Wheeled Kepler Mission
• The effect of red noise on planetary transit detection
• Improving transit characterisation with Gaussian process modelling of stellar variability
• Timing and emission variation of PSR J1733-3716