3/7/2024 0 Comments Edge Of Galaxy free downloadHere we present an ultra-deep Multi-Unit Spectroscopic Explorer (MUSE) image of the mean Mg II emission surrounding a sample of galaxies at z ≈ 1 that strongly suggests the presence of outflowing gas on physical scales of more than 10 kpc. ![]() Galactic outflows are usually of low gas density and low surface brightness and therefore difficult to observe in emission towards high redshifts. At higher redshifts, cosmological simulations of galaxy formation predict an increase in the frequency and efficiency of galactic outflows owing to the increasing star-formation activity 4. They have been directly observed in the local Universe in several individual galaxies, for example, around the Milky Way and M82 (refs. Theoretical models assume bipolar shapes for the outflows that extend well into the circumgalactic medium (CGM), up to tens of kiloparsecs (kpc) perpendicular to the galaxies. ![]() Galactic outflows are believed to play a critical role in the evolution of galaxies by regulating their mass build-up and star formation 1.
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