The X-ray Sun in Time: The Magnetic Dynamo + Coronal Activity of the Future Sun

16 Cyg A and B are nearly the same in every way\\: age, mass, radius, rotation, and evenchromospheric and chromocoronal transition region emissions. Yet our 2016Chandra observation of the system revealed 16 Cyg B to have Xray emissions over15x weaker than 16 Cyg A. This was a surprising result that could profoundly affect our understanding of older (7Gyr) solarlike coronae and dynamos. Several theories are advanced to explainthe vastly different levels of Xray activity, including the possibility that 16Cyg B is currently experiencing a Maunder Minimum. XMM observations of these analogs for the future Sun are the best way of testing the theories and resolving the mystery of 16 Cyg B s missing corona. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]