axion-like particles (ALPs) tagged posts

X-Rays surrounding ‘Magnificent 7’ may be Traces of Sought-after Particle

An artistic rendering of the XMM-Newton (X-ray Multi-Mirror Mission) space telescope. A study of archival data from the XMM-Newton and the Chandra X-ray space telescopes found evidence of high levels of X-ray emission from the nearby Magnificent Seven neutron stars, which may arise from the hypothetical particles known as axions. (Credits: D. Ducros, ESA/XMM-Newton, CC BY-SA 3.0 IGO)

Researchers say they may have found proof of theorized axions, and possibly dark matter, around group of neutron stars. A new study, led by a theoretical physicist at the U.S...

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Dark Matter does Not contain certain Axion-like Particles

Illustration of how light is transformed into ALP by the galaxy. Credit: Credits to Aurore Simonnet, Sonoma State University (for the active galaxy core) and to NASA/NOAA/GSFC/Suomi NPP/VIIRS/Norman Kuring (for image of earth).

Illustration of how light is transformed into ALP by the galaxy. Credit: Credits to Aurore Simonnet, Sonoma State University (for the active galaxy core) and to NASA/NOAA/GSFC/Suomi NPP/VIIRS/Norman Kuring (for image of earth).

Researchers at Stockholm University are getting closer to corner light dark-matter particle models. Observations can rule out some axion-like particles in the quest for the content of dark matter.

Physicists are still struggling with the conundrum of identifying more than 80% of the matter in the Universe. One possibility is that it is made up by extremely light particles which weigh less than a billionth of the mass of the electron. These particles are often called axion-like particles (ALPs)...

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