Active galaxies as standard candles: Is dust the culprit behind discrepancies?
When did the universe start? When and how did the first stars and galaxies form? What is the fate of the universe?
News tagged with cosmological parameters
Supercomputer provides new suite of Lyman-α forest simulations for illustrating large-scale structure of universe
Like a celestial beacon, distant quasars make the brightest light in the universe. They emit more light than our entire Milky Way galaxy. The light comes from matter ripped apart as it is swallowed by a supermassive black ...
Astronomy
Dec 20, 2023
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Astronomers carry out largest ever cosmological computer simulation
An international team of astronomers has carried out what is believed to be the largest ever cosmological computer simulation, tracking not only dark but also ordinary matter (such as planets, stars and galaxies), giving ...
Astronomy
Oct 23, 2023
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372
An AI-assisted analysis of three-dimensional galaxy distribution in our universe
By applying a machine-learning technique, a neural network method, to gigantic amounts of simulation data about the formation of cosmic structures in the universe, a team of researchers has developed a very fast and highly ...
Astronomy
Jul 21, 2022
0
104
Researchers confirm accuracy of cosmological data analysis technique using mock data
Astronomers have played a game of guess-the-numbers with cosmological implications. Working from a mock catalog of galaxies prepared by a Japanese team, two American teams correctly guessed the cosmological parameters used ...
Astronomy
Mar 19, 2021
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Tracing the Universe: X-ray survey supports standard cosmological model
Scanning the sky for X-ray sources, ESA's XMM-Newton X-ray observatory has been busy with the XXL Survey, its largest observational programme to date. The second batch of data from the survey has just been released, including ...
Astronomy
Oct 4, 2018
1
114
Data discrepancies may affect understanding of the universe
One of the unsolved mysteries in modern science is why the expansion of the universe appears to be accelerating. Some scientists argue it is due to a theoretical dark energy that counteracts the pull of gravity, while others ...
Astronomy
Jun 6, 2018
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455
Physicists measure the loss of dark matter since the birth of the universe
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 percent to 5 percent. Their study has been published ...
Astronomy
Dec 28, 2016
91
2101
Probing dark energy with clusters: "Russian doll" galaxy clusters reveal information about dark energy
These four galaxy clusters were part of a large survey of over 300 clusters used to investigate dark energy, the mysterious energy that is currently driving the accelerating expansion of the Universe, as described in our ...
Astronomy
Apr 28, 2016
2
47
The dark side of cosmology
It's a beautiful theory: the standard model of cosmology describes the universe using just six parameters. But it is also strange. The model predicts that dark matter and dark energy – two mysterious entities that have ...
General Physics
Mar 6, 2015
92
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