Cosmology
Scientists uncover hidden energy mechanism in M87 black hole
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Astrophysicists at Goethe University Frankfurt have simulated how the supermassive black hole M87* powers its massive particle jet using a new numerical code. Their findings reveal that magnetic reconnection, alongside the traditional Blandford-Znajek mechanism, extracts rotational energy from the black hole. This discovery explains the immense jets that influence galaxy evolution.
Early universe radio waves may reveal dark matter
Researchers at Tel Aviv University have proposed detecting faint radio waves from the cosmic dark ages to uncover dark matter's properties. These signals, emitted by hydrogen gas influenced by dark matter clumps just 100 million years after the Big Bang, could be best observed from the Moon. The findings, published in Nature Astronomy, highlight a new method to probe the Universe's earliest moments.
Researchers uncover new insights into dark matter properties
A team of astrophysicists has identified potential new characteristics of dark matter through advanced simulations. The findings, detailed in a recent study, suggest dark matter may interact more strongly with ordinary matter than previously thought. This could reshape our understanding of the universe's composition.
New model revives Einstein's idea for universe's origin
Scientists from Spain and Italy have proposed a model that replaces cosmic inflation with gravitational waves as the key force in the universe's early formation. Published in Physical Review Research, the study suggests gravity and quantum mechanics alone can explain the cosmos's structure. This approach draws on a century-old concept linked to Albert Einstein's work.