From Wobbles to Worlds - Discovery of The Exoplanet Edge!

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Today we explore what could be considered a classic problem in exoplanetary science, yet one which has eluded astronomers for decades. Transit timing variations (TTVs) are seen in thousands in systems, literally wobbling worlds. Yet for the vast majority of cases, we have no solution for the culprit. Today, we present new research from our team that finds analytic expressions for the allowed solution space and reveals the startling existence of an "exoplanet edge".

Written & presented by Prof. David Kipping & Daniel Yahalomi. Edited by Jorge Casas & David Kipping. Thumbnail by Helena Valenzuela Widerstrom.

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THANK-YOU to T. Widdowson, D. Smith, L. Sanborn, C. Bottaccini, D. Daughaday, S. Brownlee, E. West, T. Zajonc, A. De Vaal, M. Elliott, B. Daniluk, S. Vystoropskyi, S. Lee, Z. Danielson, C. Fitzgerald, C. Souter, M. Gillette, T. Jeffcoat, J. Rockett, D. Murphree, M. Sanford, T. Donkin, A. Schoen, K. Dabrowski, R. Ramezankhani, J. Armstrong, S. Marks, B. Smith, J. Kruger, S. Applegate, E. Zahnle, N. Gebben, J. Bergman, C. Macdonald, M. Hedlund, P. Kaup, W. Evans, N. Corwin, K. Howard, L. Deacon, G. Metts, R. Provost, G. Fullwood, N. De Haan, R. Williams, E. Garland, R. Lovely, A. Cornejo, D. Compos, F. Demopoulos, G. Bylinsky, J. Werner, S. Thayer, T. Edris, F. Blood, M. O'Brien, D. Lee, J. Sargent, M. Czirr, F. Krotzer, I. Williams, J. Sattler, B. Reese, O. Shabtay, X. Yao, S. Saverys, A. Nimmerjahn, C. Seay, D. Johnson, L. Cunningham, M. Morrow, M. Campbell, B. Devermont, Y. Muheim, A. Stark, C. Caminero, P. Borisoff, A. Donovan, H. Schiff, J. Cos, J. Oliver, B. Kite, C. Hansen, J. Shamp, R. Chaffee, A. Ortiz, B. McMillan, B. Cartmell, J. Bryant, J. Obioma, M. Zeiler, S. Murray, S. Patterson, C. Kennedy, G. Le Saint, W. Ruf, A. Kochkov, B. Langley, D. Ohman, P. Stevenson, T. Ford & T. Tarrants.

REFERENCES

► Yahalomi & Kipping 2024, "The Exoplanet EdgePlanets Don't Induce Observable TTVs Faster than Half their Orbital Period", ApJ submitted

► Yahalomi & Kipping 2024, "A Map of the Orbital Landscape for Perturbing Planet Solutions for SinglePlanet Systems with TTVs", ApJ submitted

► Holman & Murray 2005, "The Use of Transit Timing to Detect Extrasolar Planets with Masses as Small as Earth", Science, 307, 1288

► Kipping 2021, "The Exomoon CorridorHalf of all exomoons exhibit TTV frequencies within a narrow window due to aliasing", MNRAS, 500, 1851

► Kipping &Teachey 2020, "Impossible moons Transit timing effects that cannot be due to an exomoon", SerAJ, 201, 25

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