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We could be closer to understanding the mystery behind what dark matter is, following ...

ESA prepares Euclid spacecraft to probe dark energy and dark matter

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In a press statement, Euclid project manager Giuseppe Racca described that we know virtually nothing about dark energy and matter as a "cosmic embarrassment".

ESA’s new space telescope could finally give us an understanding of dark matter

Dozens of newly discovered gravitational lenses could reveal ancient galaxies and the nature of dark matter

Dark Matter Experiment Set To Help Solve the Biggest Mystery in the Universe

Although we may still be in the dark about what dark matter is, we now have a better idea about what it isn’t.

Australia’s first major contribution to dark matter detection — the ORGAN Experiment — is now online and searching for dark matter, bringing us a step closer to solving one of the biggest mysteries of the universe.

After four years of research and development, ORGAN has completed its first substantive search for axions — a promising candidate for dark matter. ... snip ... The first results from ORGAN rule out a popular theory about the nature of dark matter, narrowing the possibilities for what it could be ... snip ... “Although we didn’t find any, it’s very exciting because it’s Australia’s first large-scale, long-term direct dark matter detection experiment. “It’s also given us useful information about what axion dark matter isn’t, which tells future axion searches across the globe where not to look.”

Aaron said the team hopes to begin their next search later this year.

“We’re currently making technical improvements to our detector to achieve greater sensitivity and enable wider-ranging searches,” he said.

This research was supported by funding from the Australian Research Council and the Australian Research Council Centres of Excellence for Engineered Quantum Systems and Dark Matter Particle Physics.

because THEY SURELY DO.

The team believes the detector will return 20 times more data over the duration of the experiment and the chance of finding dark matter with LZ is 'probably less than 50 percent but more than 10 percent,' said Hugh Lippincott, a physicist and spokesman for the experiment in a Thursday news conference, as reported by CBS News.

https://www.cnet.com/science/space/worl ... g-results/

https://interestingengineering.com/the- ... nt-results

A massive new effort to detect the elusive substance has reported its first results. Following a time-honored tradition of dark matter hunters, the experiment, called LZ, didn’t find dark matter. But it has done that better than ever before, physicists report July 7 in a virtual webinar and a paper posted on LZ’s website.

Using only about 60 days’ worth of data, LZ has already surpassed earlier efforts to pin down WIMPs (SN: 5/28/18). “It’s really impressive what they’ve been able to pull off; it’s a technological marvel,” says theoretical physicist Dan Hooper of Fermilab in Batavia, Ill, who was not involved with the study.

Now that the detector has proven its potential, says LZ physicist Kevin Lesko of Lawrence Berkeley National Laboratory in California, “we’re excited about what we’re going to see.” 

Huge underground search for mysterious dark matter begins

LEAD, South Dakota -- In a former gold mine a mile underground, inside a titanium tank filled with a rare liquified gas, scientists have begun the search for what so far has been unfindable: dark matter.

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Scientists announced Thursday that the five-year, $60 million search finally got underway two months ago after a delay caused by the COVID-19 pandemic. So far the device has found ... nothing. At least no dark matter.

That’s OK, they say. The equipment appears to be working to filter out most of the background radiation they hoped to block. “To search for this very rare type of interaction, job number one is to first get rid of all of the ordinary sources of radiation, which would overwhelm the experiment,” said University of Maryland physicist Carter Hall.

And if all their calculations and theories are right, they figure they’ll see only a couple fleeting signs of dark matter a year. The team of 250 scientists estimates they’ll get 20 times more data over the next couple of years.

By the time the experiment finishes, the chance of finding dark matter with this device is “probably less than 50% but more than 10%,” said Hugh Lippincott, a physicist and spokesman for the experiment in a Thursday news conference.

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These scientists tried a similar, smaller experiment here years ago. After coming up empty, they figured they had to go much bigger. Another large-scale experiment is underway in Italy run by a rival team, but no results have been announced so far.

The scientists are trying to understand why the universe is not what it seems.

Are scientists about to unveil the mysteries of dark matter?

Good news, universe! Scientists are one step closer to finally understanding dark matter

Surprisingly, a new study has ruled out one such popular explanation of the dark matter, called the axion-like particle (ALP) cogenesis model. The exclusion of ALP means that scientists will now have to consider fewer models while conducting dark matter research. This would increase both the speed and accuracy of their research works and bring us one step closer to understanding the most strange phenomenon of the universe. 

Theory shows baryogenesis requirement could drive the contribution of primordial black holes to dark matter

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Studies suggest that the total amount of dark matter in the universe today is approximately five times larger than that of ordinary matter, also referred to as baryons. The reasons for this significantly higher proportion of dark matter, however, remain unclear. This unanswered research question is known as the cosmic coincidence problem.

Yi-Peng Wu, Elena Pinetti and Joseph Silk, three researchers at Laboratoire de Physique Théorique et Hautes Energies (LPTHE), UMR 7589 CNRS and Sorbonne Université, the Fermi National Accelerator Laboratory, and Institut d'Astrophysique de Paris (IAP, UMR 7095 CNRS), have recently carried out a study aimed at providing a possible solution to the cosmic coincidence problem. In their paper, published in Physical Review Letters, they suggest that the higher proportion of dark matter could be linked to baryogenesis, a physical process leading to baryonic asymmetry that is hypothesized to have occurred in the early universe.

JHL wrote: ↑Mon Feb 14, 2022 4:47 pm "Comrade, you have ~52 links and not a single one is to an Official Source. They are all to news reports from over the wall. Every one, Comrade."