Quasi-periodic dipping detected in an ultraluminous X-ray source

Quasi-periodic dipping detected in an ultraluminous X-ray source
Astronomers have performed a timing analysis of the ultraluminous X-ray source NGC 247 ULX-1 using ESA’s XMM-Newton spacecraft. The study detected quasi-periodic dipping in the X-ray light curve of this source. The finding is reported in a paper published April 22 on the arXiv pre-print server.
phys.org
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