Dear colleagues and students,
we kindly invite you to the Tor Vergata Astrophysics Seminar on Wednesday the 7th of July at 16:30.
Join the online seminar from browser or MS Teams App at https://bit.ly/3h4kZiH
TITLE: MHD Diagnostics of X-Ray Outflows from Black Hole Accretion Disks
SPEAKER: Keigo Fukumura (JMU)
ABSTRACT: Blueshifted ionized absorption features are commonly seen from diverse populations of accreting black hole systems of different mass scales ranging from X-ray binaries (XRBs) to active galactic nuclei (AGNs). Among those outflows are warm absorbers (WAs) and ultra-fast outflows (UFOs), the known sub-classes ubiquitously detected in X-ray spectra over many epochs. In this talk, I will briefly review the canonical X-ray phenomenology of BH disk winds of multi-ion absorbers seen with state-of-the-art X-ray observatories. As a powerful diagnostic tool, I will introduce a theoretical framework in the context of MHD theory, coupled to photoionization calculations, in an attempt to describe magnetic wind's generic features, which can then be tested directly against observations and perhaps elusive variabilities. In the end, I will demonstrate microcalorimeter simulations for prospective XRISM/Resolve and Athena/X-IFU observations to address future outlook in this exciting field.
Poster of the event is available at https://bit.ly/3jdOnpi
Tor Vergata Astrophysics Group