A Deficit of Ultra-Luminous X-Ray Sources in Starburst Galaxies

Astronomers from the Harvard-Smithsonian Center for Astrophysics have completed a study of active star-forming galaxies, revealing a large deficit in the number of ULXs detected. Ultra-luminous X-ray sources (ULXs) are point sources in the sky that are so bright in X-rays that each emits more radiation than a million suns emit at all wavelengths. ULXs […]
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