Eclipse timing variation from TESS using two models

However, they remain underrepresented, with only 60 confirmed or candidate systems known. In this work, we leverage TESS photometry to search for circumbinary companions through eclipse timing variations (ETVs), analyzing 152 detached eclipsing binaries.

By modeling eclipse timings, we identify 37 systems with significant periodic signals, 19 of which have false-alarm probabilities below 0.01. One system, TIC 142979644, emerges as a promising candidate to host a circumbinary substellar companion, with estimated masses of 18.8M_J_ and 11.1M_J_ from different methods. Simulations using synthetic ETVs indicate a 5% recovery rate for circumbinary brown dwarfs and 0.1% for Jupiter-like planets, with median masses of 56.6M_J_^+16.5MJ^_-23.4MJ_ and periods of 1404_-953_^+1361^days.