Astronomers have spotted a strange blast of gamma radiation from space that defies categorisation, and it may mean a gap in our understanding of how black holes form.
Gas clouds across the universe are known to absorb the light produced by distant massive celestial objects, known as quasars. This light manifests as the so-called Lyman alpha forest, a dense structure composed of absorption lines that can be observed using spectroscopy tools.
Over the past decades, astrophysicists have been assessing the value of these absorption lines as a tool to better understand the universe and the relationships between cosmological objects. The Lyman alpha forest could also potentially aid the ongoing search for dark matter, offering an additional tool to test theoretical predictions and models.
Researchers at University of Nottingham, Tel-Aviv University, New York University, and the Institute for Fundamental Physics of the Universe in Trieste have recently compared low-redshift Lyman alpha forest observations to hydrodynamical simulations of the intergalactic medium and dark matter made up of dark photons, a renowned dark matter candidate.
In 1916, Einstein finished his Theory of General Relativity, which describes how gravitational forces alter the curvature of spacetime. Among other things, this theory predicted that the Universe is expanding, which was confirmed by the observations of Edwin Hubble in 1929. Since then, astronomers have looked farther into space (and hence, back in time) to measure how fast the Universe is expanding – aka. the Hubble Constant. These measurements have become increasingly accurate thanks to the discovery of the Cosmic Microwave Background (CMB) and observatories like the Hubble Space Telescope.
Astronomers have traditionally done this in two ways: directly measuring it locally (using variable stars and supernovae) and indirectly based on redshift measurements of the CMB and cosmological models. Unfortunately, these two methods have produced different values over the past decade. As a result, astronomers have been looking for a possible solution to this problem, known as the “Hubble Tension.” According to a new paper by a team of astrophysicists, the existence of “Early Dark Energy” may be the solution cosmologists have been looking for.
Continue reading “‘Early Dark Energy’ Could Explain the Crisis in Cosmology” »
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The big bang is one of the most fascinating topics you can bring up when conversing with scientists and astronomers. This is because the theory talks about how the whole universe started in the first place. However, the event that led to the big bang is one thing that is being argued among scientists today.
For this reason, the James Webb Telescope was called in to make some findings about the big bang. The JWST found something quite alright, but it wasn’t something the scientist had prepared their minds for. What did the James Webb Telescope discover, and in what way would it affect the Big Bang Theory?
Continue reading “James Webb Just Detected A Huge Structure Older Than The Universe!” »
Astronomers are in a state of bewilderment after they discovered strange blasts of radiation from space. Those blasts, known as gamma-ray bursts (GRBs), seem to come from a black hole that is developing slowly after two stars merged. According to NewScientist, gamma-ray bursts come in two categories: short GRBs and gamma-ray explosions: short GRBs and long GRBs.
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We thought the Big Bang started it all. Then we realized that something else came before, and it erased everything that existed prior.
Dark matter makes up about 27% of the matter and energy budget in the universe, but scientists do not know much about it. They do know that it is cold, meaning that the particles that make up dark matter are slow-moving. It is also difficult to detect dark matter directly because it does not interact with light. However, scientists at the U.S. Department of Energy’s Fermi National Accelerator Laboratory (Fermilab) have discovered a way to use quantum computers to look for dark matter.
Aaron Chou, a senior scientist at Fermilab, works on detecting dark matter through quantum science. As part of DOE’s Office of High Energy Physics QuantISED program, he has developed a way to use qubits, the main component of quantum computing.
Performing computation using quantum-mechanical phenomena such as superposition and entanglement.
The effects of solar activity are predicted to reach the Earth’s atmosphere by December 8.
The earth is all set to experience another set of solar flares, which is estimated to reach our atmosphere by December 8. After a relatively calmer period of solar activity, we are about to experience a high-velocity gush of solar winds and minor geomagnetic storms. The intensity of the storm expected is classified as G1, the least intense solar storm.
Images taken of the sun on December 4 by Eduardo Schaberger Poupeau, an astrophotographer, revealed five significant sunspots and two filaments of magnetism facing Earth.
Continue reading “A hyperactive sunspot to result in solar flares” »
Ultralight dark matter has wavelike properties that could affect the operation of the clocks.
For decades, scientists have been trying to wrap their heads around the dark matter, which makes up an estimated 85 percent of the mass in the universe. Despite experimental efforts running for decades, researchers have only been able to observe the essence, not quite detect it.
Now, a new study published in Nature Astronomy on December 5 revealed that an atomic clock on-board a spacecraft inside the inner depths of the solar system could search for ultralight dark matter. The latter has wavelike properties that could affect the operation of the clocks.
