KIPAC Tea Talk: Uncovering Collisionally Ionized, Relativistic, and BAL-like Outflows in MCG-6-30-15 with Chandra HETG, XRISM, and Bayesian Framework

Abstract: Highly ionized winds are a promising candidate for Active Galactic Nuclei (AGN) feedback. Precisely constraining these winds requires careful analysis of absorption lines in high-resolution X-ray spectra from nearby AGN, for which typical studies are not yet optimized. New approaches to analyzing data from Chandra's High Energy Transmission Grating (HETG) and XRISM Resolve can yield crucial progress. In this poster, I will present results for a Bayesian analysis framework on deep, archival HETG MCG-6-30-15 2000 & 2004 data. We uncover a hot relativistic ultra-fast outflow (UFO) previously undetected in HETG, independently observed in XRISM, and tentative cool UFOs. We reveal a more slow warm absorbers and detect the first potential collisional absorbers in this system. Finally, we uniformly trace how these winds evolved over 25 years, the longest possible timeline using XRISM, and emphasize the arrival of a new era in high spectral resolution X-ray astrophysics.