Powered by Indico
We present findings on the fastest coronal mass ejection (CME) observed during the ascending phase of solar cycle 25. This event occurred on September 5, 2022, as Parker Solar Probe (PSP) traversed through the CME during its 13th perihelion encounter. The CME exhibited an exceptional velocity of approximately 2500 km/s, categorizing it within the rare 0.15% of extreme-speed CMEs documented in the CDAW catalog. Positioned at a distance of around 13 solar radii (Rsun), PSP not only passed through the CME but also encountered its substructures and an associated current sheet on September 6 within this perihelion period. In-situ measurements within the current sheet region revealed distinctive features, including magnetic field reversal, elevated temperatures, and particle velocities consistent with analytical solutions of magnetic reconnection. Correlating these measurements with remote sensing data from Solar Orbiter indicates an ongoing reconnection as PSP traverses the current sheet. This marks it to be the first in-situ observation of an ongoing reconnection linked to an eruption in the solar corona.