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X-ray binary 4U 1907+09: NuSTAR observations reveal flux variability and spin-down
Indian astronomers have performed X-ray observations of an X-ray binary designated 4U 1907+09. Results of the observational ...
Cross-sectional area variation as a key factor in pressure wave attenuation in bubbly flows: A theoretical analysis
Pressure waves propagating through bubble-containing liquids in tubes experience considerable attenuation. Researchers at the ...