CFHT UM2025 - Presentation Details
Abstract Details
Title: Black Hole-Driven Motion of the Filaments in M87
Presenter: Camille Poitras
Abstract:
M87, the central galaxy of the Virgo cluster, is well known for hosting a multiphase filamentary nebula. Despite extensive studies, the kinematics and ionization properties beyond the central region remain sparse. Using the optical imaging Fourier transform spectrometer SITELLE, we obtain, for the first time, the velocity map across the entire filamentary network, including a strikingly isolated filament and a complex region where the only molecular gas has been detected. We revisit velocity structure functions to probe turbulence at different scales and analyze the [NII]/Hα gradient to trace ionization variations across the nebula. By integrating SITELLE with new MEGARA/GTC data, as well as MUSE, ALMA, and complementary multiwavelength data, we also explore the relatively strong coupling between the gas phases (i.e warm ionized and cold molecular gas). This study advances our understanding of filament motions, which appear partly driven by the supermassive black hole outbursts.