Intergalactic stream of cosmic carbon feeding massive galaxy
- April 2, 2023
- Posted by: OptimizeIAS Team
- Category: DPN Topics
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Intergalactic stream of cosmic carbon feeding massive galaxy
Subject : Science and technology
Section: Space technology
Concept :
- Radio telescope observations have revealed a cold stream of intergalactic atomic carbon gas feeding star formation in a massive radio galaxy in the young Universe.
- The findings provide observational evidence supporting theoretical cosmological models and offer new insights into the origins of the cosmic materials that enable galaxy and star formation.
- Galaxies evolve by accreting gas, either in mergers with other galaxies or from streams of cold molecular gas.
Cold dark matter theory:
- The theory suggest that hydrogen gas created in the big bang collapses first into sheets and then into filaments strung out across space.
- In places where filaments cross or are clustered together, galaxies form and the filaments continue to fuel the growth of galaxies by feeding them a steady stream of gas.
Cosmic Web:
- Galaxies across the universe are connected by a complex structure made up of filaments of dark matter and sheets of hydrogen gas. The network connecting these intergalactic filaments is known as cosmic web.
- The existence of the cosmic web is central to current theories of how galaxies first formed following the big bang, however, evidence for it had remained largely theoretical.
- The recent observations of the cosmic web support the cold dark matter theory of galaxy formation.