By analyzing the data from ESA’s XMM-Newton satellite, astronomers from the Astronomical Observatory of the Jagiellonian University in Kraków, Poland, and elsewhere, have investigated X-ray intraday variability of a nearby blazar known as Markarian 421. Results of the study, published June 5 on arXiv.org, could help us better understand the nature of high-energy X-ray sources.
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Source: Phys.org