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Keyword：X-ray detection technology
NASA's Chandra Telescope Discovers 84 Mysterious Supersoft X-ray Sources
NASA's Chandra X-ray Observatory recently announced that researchers using the observatory's publicly available observation data discovered 84 mysterious celestial objects known as supersoft X-ray sources in 6 galaxies. The related research was published in Nature Astronomy. Image credit: X-ray: NASA. These objects emit X-rays with unusually low energy and may be accompanied by strong high-energy ultraviolet radiation. The research team stated that the behavior of these objects is clearly different from previously observed known celestial bodies and may provide new clues for explaining the origin of Type Ia supernovae and the electron-stripping mechanism in the intergalactic medium. The 6 galaxies covered by this search include two spiral...
2026-09-10
Germany's eROSITA Second Data Release Unveils Nearly Two Million X-ray Sources
On July 31, the German eROSITA consortium, led by the Max Planck Institute for Extraterrestrial Physics with participation from the University of Bonn, released its second major public dataset, eROSITA Data Release 2 (DR2). Built from the first three all-sky survey observations conducted by the eROSITA telescope aboard the Spectrum-Roentgen-Gamma (SRG) mission, this dataset is considered one of the most sensitive and comprehensive X-ray catalogs currently available to the public. The DR2 main catalog covers the 0.2–2.3 kiloelectron-volt (keV) band in the western hemisphere, containing nearly two million X-ray sources. Among these, over 1.9 million are point-like sources, primarily consisting of stars and actively accreting supermassive black holes; approximately 64,000 are extended sources,...
2026-08-01