Dark Matter May Have an Electric Charge

June 19, 2018

NASA's map of the cosmic microwave background. Somewhere in there may be evidence that dark matter carries an electrical charge. [NASA/SCIENCE PHOTO LIBRARY/GETTY IMAGES]

Physicists from Harvard University explore the possibility that dark matter, or a small amount of it, may have an electric charge.

If true, dark matter would be able to interact with ordinary matter through an electromagnetic force, allowing scientists to dig deeper into this elusive material that makes up 25 percent of the universe. It would also shed some light on a more recently uncovered mystery about the beginnings of the universe.

Researchers led by Julian Muñoz, theoretical cosmologist and postdoctoral fellow at Harvard's Department of Physics, are taking inspiration from research concluded in February. Working out of the Murchison Radio-astronomy Observatory in Western Australia, [the sientists of] the Experiment to Detect the Global Epoch of Reionization Signature (EDGES) were able to detect radio signals from 180 million years ago, at which point the first stars were born to form the early universe...

Continue reading: Nicole Arce, "Harvard Physicists Say Dark Matter May Have An Electric Charge," Tech Times (4 June 2018).
Also read a Letter to Nature: Julian B. Muñoz & Abraham Loeb, "A small amount of mini-charged dark matter could cool the baryons in the early Universe," Nature 557 (2018) DOI: https://doi-org.ezp-prod1.hul.harvard.edu/10.1038/s41586-018-0151-x