Where is the Dark Matter? Look for suspicious warm planets

[ad_1]
We are bathing the uncertain universe. Astrophysicists generally accept that about 85% of the total mass of the universe is still hypothetical from exotic particles called dark matter. Our Milky Way galaxy, which appears as a bright four-disc, lives in a vast sphere of things — a halo that becomes particularly dense in the middle. But dark matter says that its nature is elusive. It does not interact with electromagnetic forces such as light, and the collisions that matter can have are rare and difficult to detect.
Physicists are moving in that direction. They have designed detectors Made with silicon shavings on the ground or liquid argon baths to capture these interactions directly. They have seen what dark matter it is can affect neutron stars. And they are looking for it as it floats from other celestial bodies. “We know we have stars and planets, and they’re just black peppers all over the halo,” he says Rebecca Leane, astroparticle physicist with SLAC National Accelerator Laboratory. “When they move through the halo, they can interact with dark matter.”
Therefore, Leane suggests that we look for them in the extensive collection of exoplanets of the Milky Way or outside our solar system. Specifically, he thinks we should use large sets of giant gases, planets like our Jupiter. Dark matter can stick to the gravity of planets, just like in fast-moving sand. When this happens, the particles can collide and destroy, releasing heat. This heat can accumulate to make the planet hot — especially in the middle of a galaxy. In April, Leane and her authors, Yuri Smirnov From Ohio State University, published a paper Physical Review Letters Measuring the temperature range of the esoplanet towards the center of the Milky Way suggested that it could reveal this indicative trace of dark matter: unexpected heat.
Their role was based on calculations, not observations. The temperature points predicted by Leane and Smirnov are significantly higher and we will soon have a state-of-the-art thermometer: the new NASA James Webb Space Telescope is expected to launch this fall. The JWST is an infrared telescope and is the most powerful space telescope ever built.
“It’s a very amazing and inventive approach to detecting dark matter,” he says Joseph Bramante, a particle physicist at Queen’s University and the McDonald’s Institute in Ontario, who was not part of the study. Bramant has previously explored the possibility of detecting dark matter on the planet. Detecting unusually hot planets aimed at the center of the Milky Way would be “very credible for the burning of dark matter weapons,” he says.
It has been less than 30 years since astronomers discovered the first exoplanets. Because they are much more blurred than the stars they orbit, they are difficult to see on their own; they usually just reveal it barely darkening the light of these stars. Astronomers also find exoplanets and increase their size with tricks like micro-lenses. (The gravity of a star distorts the view of the light of more stars, and a planet between the two produces a light that effect.) The exoplanet count now sits 4,375, but some 300,000 billion could be there.
Dark matter usually moves freely between these islands with “normal” matter, that is, it slides past objects without interaction. But when a particle of dark matter pushes in ordinary particles like protons, a smidgeon slows it down. “Like billiard balls,” Lean says. “It just gets in, it literally hits and then it bounces off. But it can bounce off with less energy.”
Accumulating enough of these collisions slows them down too much to escape the gravity of a planet. Physicists expect that when “scattering” occurs and this capture occurs, particles of dark matter can collide and destroy each other. Once the dark energy matter is dissipated to other particles and heat is dissipated. “When they break together,” Lean says, “the energy enters the planet.”
[ad_2]
Source link