“This idea of looking for these axionlike particles, is, in my opinion, the most exciting thing happening in particle physics at the moment.”
“It’s a very exciting idea,” says physicist Benjamin Safdi of the University of California, Berkeley, who was not involved with this study. “They’ve come up with a new method, and they’ve shown that this method could in principle work.”
Unfortunately, no one had any images of polarized light from a black hole to examine — until last year. That’s when the Event Horizon Telescope, or EHT, an Earth-spanning network of radio telescopes, revealed itsThis “is precisely the information that we need in order to carry out this theoretical proposal,” says particle physicist Yue Zhao of the University of Utah in Salt Lake City.
But the same technique could be used to hunt for other axionlike particles. “The larger black hole you have, the lighter is your mass,” Zhao says. The physicists hope to use the EHT’s future observations of other black holes to look for axions of different masses. One black hole on EHT’s radar is
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