CMB tagged posts

New Survey hints at Exotic Origin for the Cold Spot

The map of the cosmic microwave background (CMB) sky produced by the Planck satellite. Red represents slightly warmer regions, and blue slightly cooler regions. The Cold Spot is shown in the inset, with coordinates on the x- and y-axes, and the temperature difference in millionths of a degree in the scale at the bottom. Credit: ESA and Durham University. Click for a full size image

The map of the cosmic microwave background (CMB) sky produced by the Planck satellite. Red represents slightly warmer regions, and blue slightly cooler regions. The Cold Spot is shown in the inset, with coordinates on the x- and y-axes, and the temperature difference in millionths of a degree in the scale at the bottom. Credit: ESA and Durham University. Click for a full size image

A supervoid is unlikely to explain a ‘Cold Spot’ in the cosmic microwave background, according to the results of a new survey, leaving room for exotic explanations like a collision between universes. The cosmic microwave background (CMB), a relic of the Big Bang, covers the whole sky. At 2.73 degrees above 0K, the CMB has some anomalies, including the Cold Spot. This feature, about 0...

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Physicists discover Hidden Aspects of Electrodynamics

LSU Department of Physics & Astronomy Assistant Professor Ivan Agullo's new research advances knowledge of a classical theory of electromagnetism. Credit: LSU

LSU Department of Physics & Astronomy Assistant Professor Ivan Agullo’s new research advances knowledge of a classical theory of electromagnetism. Credit: LSU

Discovery may impact the study of the birth of the universe. Radio waves, microwaves and even light itself are all made of electric and magnetic fields. The classical theory of electromagnetism was completed in the 1860s by James Clerk Maxwell. At the time, Maxwell’s theory was revolutionary, and provided a unified framework to understand electricity, magnetism and optics. Now, new research led by LSU Dept of Physics & Astronomy Assistant Prof. Ivan Agullo, with colleagues from Universidad de Valencia advances knowledge of this theory.

Maxwell’s theory displays a remarkable feature: it remains unaltered under the interchange of the e...

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Substantial evidence of Holographic Universe

A sketch of the timeline of the holographic Universe. Time runs from left to right. The far left denotes the holographic phase and the image is blurry because space and time are not yet well defined. At the end of this phase (denoted by the black fluctuating ellipse) the Universe enters a geometric phase, which can now be described by Einstein's equations. The cosmic microwave background was emitted about 375,000 years later. Patterns imprinted in it carry information about the very early Universe and seed the development of structures of stars and galaxies in the late time Universe (far right). Credit: Paul McFadden

A sketch of the timeline of the holographic Universe. Time runs from left to right. The far left denotes the holographic phase and the image is blurry because space and time are not yet well defined. At the end of this phase (denoted by the black fluctuating ellipse) the Universe enters a geometric phase, which can now be described by Einstein’s equations. The cosmic microwave background was emitted about 375,000 years later. Patterns imprinted in it carry information about the very early Universe and seed the development of structures of stars and galaxies in the late time Universe (far right). Credit: Paul McFadden

A UK, Canadian and Italian study has provided what researchers believe is the first observational evidence that our universe could be a vast and complex hologram...

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Physicists Measure the Loss of Dark Matter since the Birth of the Universe

The discrepancy between the cosmological parameters in the modern Universe and the Universe shortly after the Big Bang can be explained by the fact that the proportion of dark matter has decreased. The authors of the study could calculate how much dark matter could have been lost and what the corresponding size of the unstable component would be. Researchers may explore how quickly this unstable part decays and say if dark matter is still disintegrating. CREDIT MIPT Press Office USAGE RESTRICTION

The discrepancy between the cosmological parameters in the modern Universe and the Universe shortly after the Big Bang can be explained by the fact that the proportion of dark matter has decreased. The authors of the study could calculate how much dark matter could have been lost and what the corresponding size of the unstable component would be. Researchers may explore how quickly this unstable part decays and say if dark matter is still disintegrating. CREDIT MIPT Press Office USAGE RESTRICTION

Russian scientists have discovered that the proportion of unstable particles in the composition of dark matter in the days immediately following the Big Bang was no more than 2 – 5%...

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