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New Model Suggests Dark Matter has Two Particle States
The model says faster-moving particles in the Milky Way can trigger gamma rays, while slower dwarf galaxies remain dark.
12 Articles
12 Articles
Dark Matter May Exist in Two Forms, New Study Suggests
Scientists propose dark matter has two forms. Credit: NASA’s Marshall Space Flight Center / Flickr / CC BY-NC 2.0 Scientists may have unlocked a new way to understand dark matter by proposing that it exists in two distinct forms. A new study suggests these two forms behave very differently depending on where they are in the universe, which could explain why researchers have struggled to detect consistent signals from different regions of space. …
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What if dark matter came in two states?
The absence of a signal could itself be a signal. This is the idea behind a new study published in the Journal of Cosmology and Astroparticle Physics (JCAP), which aims to redefine how we search for dark matter, showing that it may not be necessary to find the same “clues” everywhere in order to interpret it. In particular, the study suggests that even if we observe a certain type of signal at the center of our galaxy — an exce…
There is something disconcerting and at the same time attractive about dark matter: it governs everything, but we do not see it. We know that it is there because galaxies rotate too fast, because light curves more than expected and because the universe, as we know it, simply could not exist without it. And yet we do not know exactly what it is. It is estimated that about 85% of the matter in the universe is dark matter. It does not emit light, i…
Astronomers discover a mysterious duality in dark matter
A dark matter signal that appears in one place but not another might look like a contradiction. This new study argues it may be something else entirely. At the center of the Milky Way, astronomers have long seen an excess of gamma rays, a form of high-energy light. That glow, known as the Galactic Center Gamma-Ray Excess, has remained one of the more intriguing clues in the hunt for dark matter. Some researchers think it could come from dark mat…
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