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Category: cosmology – Page 8

An American Collider Is Finally Ready to Recreate Matter from the Beginning of Time

Today, the absolute heart of particle physics is located in Geneva, Switzerland at CERN’s Large Hadron Collider. This instrument’s unmatched size, power, and precision make it the ultimate tool for exploring high-energy particle physics. However, one tool can’t do everything, and even immensely useful ones like the LHC sometimes need a helping hand.

That’s where Brookhaven National Laboratory’s (BNL) Relativistic Heavy Ion Collider (RHIC) comes in. In 2015, the U.S. Department of Energy approved an upgrade to the Pioneering High Energy Nuclear Interaction eXperiment (PHENIX)—an instrument originally designed to explore the components of the quark-gluon plasma (QGP) that formed one millionth of a second after the Big Bang. According to Edward O’Brien (a physicist from BNL), the idea behind this super PHENIX, or sPHENIX, was to “provide physics results which focused on jets and heavy flavor [of quarks] that complemented and overlapped with the Heavy Ion physics results being generated by the experiments at the CERN Large Hadron Collider.”

The universe’s first magnetic fields were ‘comparable’ to the human brain — and still linger within the ‘cosmic web’

New computer simulations suggest the first magnetic fields that emerged after the Big Bang were much weaker than expected — containing the equivalent magnetic energy of a human brain.

Quantum Computers Mimic Black Holes To Probe Cosmic Secrets

The difference between traditional computers and quantum computers is narrowing in their ability to simulate the scrambling of quantum information. A team of four researchers at RIKEN has successfully used two small quantum computers to simulate quantum information scrambling, a key process in qu

These Strange Stars Could Reveal the True Nature of Dark Matter

A new study suggests that mysterious “dark dwarfs” could provide crucial insights into the true nature of dark matter. Celestial objects known as dark dwarfs might be concealed near the center of our galaxy, and scientists believe they could help unlock the secrets of one of the biggest mysteries i

Inflation without an inflaton! This Model Challenges Big Bang Inflation

A new study suggests the universe didn’t need inflation to begin. Instead, gravitational waves could explain how structure formed in the early cosmos.

Paper link: https://journals.aps.org/prresearch/a…

Chapters:
00:00 Introduction.
00:40 The Discovery/Event.
02:42 Scientific Significance & Theories.
04:48 Implications and What’s Next.
07:16 Outro.
07:54 Enjoy.

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The cosmic giant challenging our understanding of galaxy formation in the early universe

Scientists have discovered a giant black hole that they believe may have been formed in the first few microseconds after the Big Bang. The black hole is so huge that it may change our understanding of how these cosmic giants form. If the findings are confirmed, this will be the first evidence of primordial black holes, which were predicted to exist by Stephen Hawking in the 1970s.

The discovery comes from observations made by the James Webb Space Telescope (JWST), the largest telescope in space. JWST spotted a group of small, red, faint objects called “Little Red Dots” (LRDs), which are thought to be baby that are home to young, growing .

A paper by an international team of scientists led by astrophysicist Ignas Juodžbalis of the University of Cambridge in the UK has directly measured the mass of one of the LRDs. Their results indicate that a mysterious glow from the red dot named QSO1 is a black hole with a mass equivalent to 50 million suns. This large astronomical object is in the early stages of a process called accretion, where its gravity is pulling in surrounding gas and dust. The study is published on the arXiv preprint server.

The Universe’s Engine Is Changing: DESI Hints Dark Energy Isn’t What We Thought

DESI observations suggest black holes may generate dark energy by consuming stellar matter. The idea resolves puzzles about neutrino mass and cosmic expansion. These are remarkable times for probing some of the most profound mysteries in physics, made possible by advanced experiments and increasi

Astronomers uncover enormous bubble bigger than our Solar System

A giant bubble of gas and dust surrounds the red supergiant DFK 52, likely created in a powerful outburst 4,000 years ago. Astronomers are baffled at how the star survived without going supernova, and suspect a hidden companion may have played a role. This discovery could reveal clues about the final stages of massive stars.

Astronomers from Chalmers University of Technology, Sweden, have discovered a vast and expanding bubble of gas and dust surrounding a red supergiant star – the largest structure of its kind ever seen in the Milky Way. The bubble, which contains as much mass as the Sun, was blown out in a mysterious stellar eruption around 4,000 years ago. Why the star survived such a powerful event is a puzzle, the scientists say.

The new results are published in the scientific journal Astronomy and Astrophysics, and the team was led by Mark Siebert, Chalmers, Sweden. Using the ALMA radio telescope in Chile, the researchers observed the star DFK 52 – a red supergiant similar to the well-known star Betelgeuse.

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