Biddle, Lauren I.Johns-Krull, Christopher M.Llama, JoePrato, LisaSkiff, Brian A.2018-07-112018-07-112018Biddle, Lauren I., Johns-Krull, Christopher M., Llama, Joe, et al.. "K2ﾠReveals Pulsed Accretion Driven by the 2 Myr Old Hot Jupiter CI Tau b." <i>The Astrophysical Journal Letters,</i> 853, (2018) IOP Publishing: https://doi.org/10.3847/2041-8213/aaa897.https://hdl.handle.net/1911/102386CIﾠTau is a young (~2 Myr) classical T Tauri star located in the Taurus star-forming region. Radial velocity observations indicate it hosts a Jupiter-sized planet with an orbital period of approximately 9 days. In this work, we analyze time series of CIﾠTau's photometric variability as seen byﾠK2. The light curve reveals the stellar rotation period to be ~6.6 days. Although there is no evidence that CIﾠTau b transits the host star, a ~9 day signature is also present in the light curve. We believe this is most likely caused by planetﾖdisk interactions that perturb the accretion flow onto the star, resulting in a periodic modulation of the brightness with the ~9 day period of the planet's orbit.engArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.Journal articlehttps://doi.org/10.3847/2041-8213/aaa897