Dark Matter Research Paper

Dark Matter Research Paper-58
The outer regions of galaxies, like our own Milky Way, rotate much faster around the centre than can be accounted for by the quantity of ordinary matter like stars, planets and interstellar gasses.Something else has to produce the required amount of gravitational force, so physicists proposed the existence of dark matter.The problems arise in extreme conditions: near black holes, or during the Big Bang.

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In a new paper, which appeared today on the Ar Xiv preprint server, Verlinde shows how his theory of gravity accurately predicts the velocities by which the stars rotate around the center of the Milky Way, as well as the motion of stars inside other galaxies.According to Verlinde, gravity is not a fundamental force of nature, but an emergent phenomenon.In the same way that temperature arises from the movement of microscopic particles, gravity emerges from the changes of fundamental bits of information, stored in the very structure of spacetime.Verlinde now shows that this idea is not quite correct—part of the information in our universe is contained in space itself.This extra information is required to describe that other dark component of the universe: Dark energy, which is believed to be responsible for the accelerated expansion of the universe."We have evidence that this new view of gravity actually agrees with the observations, " says Verlinde."At large scales, it seems, gravity just doesn't behave the way Einstein's theory predicts." At first glance, Verlinde's theory presents features similar to modified theories of gravity like MOND (modified Newtonian Dynamics, Mordehai Milgrom (1983)).As such, the problem of determining the identity of dark matter has largely shifted to the fields of astroparticle and particle physics.In this talk, I will review the current status of the search for the nature of dark matter.Investigating the effects of this additional information on ordinary matter, Verlinde comes to a stunning conclusion.Whereas ordinary gravity can be encoded using the information on the imaginary sphere around the universe, as he showed in his 2010 work, the result of the additional information in the bulk of space is a force that nicely matches that attributed to dark matter.

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    More than 100 physicists of the thousands on LHC experiments are hard at work on the search for dark matter at the LHC. And thousands of other physicists are looking for dark matter through other types of experiments. “We need information from all different types of experiments,” says CERN theorist Gian Giudice.…

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    What is dark energy? More is unknown than is known — we know how much there is, and we know some of its properties; other than that, dark energy is a mystery — but an important one. Roughly 70% of the Universe is made of dark energy. Dark matter makes up about 25%. The rest - everything on Earth, everything ever observed with all of our instruments, all normal matter adds up to less than 5.…

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    But when matter and antimatter come into contact, they annihilate – disappearing in a flash of energy. The Big Bang should have created equal amounts of matter and antimatter. So why is there far more matter than antimatter in the universe? At CERN, physicists make antimatter to study in experiments.…

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    It is dark matter composed of constituents with an FSL much smaller than a protogalaxy. This is the focus for dark matter research, as hot dark matter does not seem capable of supporting galaxy or galaxy cluster formation, and most particle candidates slowed early. The constituents of cold dark matter…

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    Since the cluster shows no signs of flying apart, it must contain a preponderance of “dark matter”—about ten times more than the visible matter—to bind it together. Zwicky’s conclusion was correct, but his colleagues had been skeptical. Rubin realized that she had discovered compelling evidence for Zwicky’s dark matter.…

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    Abstract From astronomical observations, we know that dark matter exists, makes up 23% of the mass budget of the Universe, clusters strongly to form the load-bearing frame of structure for galaxy formation, and hardly interacts with ordinary matter except gravitationally.…

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