Scientists have proposed the existence of a new “fifth force” to explain a perplexing challenge to the standard model of cosmology, also known as the Lambda cold dark matter (ΛCDM) model, a well-corroborated framework for understanding our universe.
This fifth force, mediated by a hypothetical new particle called a symmetron, could guide small “satellite” galaxies into strange orbits around larger galaxies that defy the predictions of the ΛCDM model.
In other words, small galaxies captured by the gravitational pull of larger galaxies end up arranged in thin flat planes, or disks, almost like the rings of Saturn, whereas the model suggests they should be distributed in messy orbits all-around their host galaxies.
Satellites in these synced-up orbits have been seen around our own galaxy, the Milky Way, as well as its closest galactic neighbors, Andromeda and Centaurus A.
Scientists have proposed many possible explanations for this curious gap between theory and observation, known as the “satellite disk problem” or the “planes of satellites problem,” which is one of many small-scale challenges to the ΛCDM model.
Now, a pair of researchers at the University of Nottingham have presented what they believe is “the first potential ‘new physics’ explanation for the observed planes of satellites which does not do away with dark matter,” referring to the unidentified substance that makes up most of the mass in the universe.
Symmetrons could generate a special force that creates invisible boundaries in space, known as “domain walls.” Symmetrons are one of many speculative particles that have been proposed to fill in some of the missing links in the standard model.
Check out our new Hindi Channel-
Is time travel possible? –
Video Editor: Team 121 Creators (
Narration: Sidhart Viyyapu (
Project Head: Rajkumar Shukla (
Production: World Of Science Media
©2022, World Of Science (WOS) Media. All Rights Reserved.
-~-~~-~~~-~~-~-
Please watch: “The $1 Trillion Project Of Turning Sahara Green Again! What Could Go Wrong?” –
-~-~~-~~~-~~-~-
source
-
-
-
-
