PIRSA:14110078

Two-temperature disk + isothermal jet model for Sgr A* and M87

Moscibrodzka, M. (2014). Two-temperature disk + isothermal jet model for Sgr A* and M87. Perimeter Institute. https://pirsa.org/14110078

Moscibrodzka, Monika. Two-temperature disk + isothermal jet model for Sgr A* and M87. Perimeter Institute, Nov. 11, 2014, https://pirsa.org/14110078 

          @misc{ pirsa_PIRSA:14110078,
            doi = {10.48660/14110078},
            url = {https://pirsa.org/14110078},
            author = {Moscibrodzka, Monika},
            keywords = {Strong Gravity},
            language = {en},
            title = {Two-temperature disk + isothermal jet model for Sgr A* and M87},
            publisher = {Perimeter Institute},
            year = {2014},
            month = {nov},
            note = {PIRSA:14110078 see, \url{https://pirsa.org}}
          }

Monika Moscibrodzka

Radboud Universiteit Nijmegen

Talk number
PIRSA:14110078
Collection
Talk Type
Subject
Abstract
The super-massive black hole in the center of the Milky Way, Sgr~A*, displays a nearly flat radio spectrum which is typical for jets in Active Galactic Nuclei. Indeed, time-dependent, magnetized models of radiatively inefficient accretion flows, which are commonly used to explain emission of Sgr A* also often produce jet-like outflows. However, the emission from these models so far has failed to reproduce the flat radio spectrum. We show that current GRMHD simulations can naturally reproduce the flat spectrum, when using a two-temperature plasma in the disk and a constant electron temperature plasma in the jet. This assumption is consistent with current state-of-the art simulations, in which the electron temperature evolution is not explicitly modeled. The model images and spectra are consistent with the radio sizes and spectrum of Sgr~A*. The model can also reproduce the radio images of the jet base in M87.