riddle

X-ray analysis without a doubt: the riddle of four decades of cosmic X-rays solved

X-ray analysis without a doubt: the riddle of four decades of cosmic X-rays solved

X-ray fluorescence spectrum measured with the 3C and 3D emission lines of Fe-XVII, and B and C of Fe XVI. Background image: The Sun in X-ray light, data taken by the NuSTAR space telescope. Credit: NASA, NuSTAR, SDO An international team led by the Heidelberg MPl for Nuclear Physics has solved a decades-old problem in …

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