JWST MIRI MRS observations show the Galactic Center Minispiral gas has 1-2.5 solar metallicity, Wolf-Rayet driven ionization, significant Ni and Fe dust destruction, and harder radiation in compact structures near Sgr A*.
@doi [ ] 10.1086/519833, https://ui.adsabs.harvard.edu/abs/2007ApJ...665.1038C 665
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Chaotic Cold Accretion reproduces the observed near-linear black hole mass-bolometric luminosity scaling (slope 0.91) in z>2 quasars while Bondi accretion underpredicts by ~2 dex.
NGC 1270 and NGC 1272 host minicoronae at 0.99 keV and 0.63 keV extending 1.4 kpc and 1.2 kpc where thermal emission dominates and magnetic fields likely suppress viscous stripping to maintain balance among cooling, heating, stellar mass loss, stripping and accretion.
The paper reviews dust production, destruction and growth processes in galaxies, compiles literature data on comoving dust mass density, presents evidence for and against interstellar dust growth, and identifies the high-redshift dust budget as needing further study.
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The X-ray Coronae of two massive galaxies in the core of the Perseus cluster
NGC 1270 and NGC 1272 host minicoronae at 0.99 keV and 0.63 keV extending 1.4 kpc and 1.2 kpc where thermal emission dominates and magnetic fields likely suppress viscous stripping to maintain balance among cooling, heating, stellar mass loss, stripping and accretion.