The 450 Day X-Ray Monitoring of the Changing-look AGN 1ES 1927+654
The 450 Day X-Ray Monitoring of the Changing-look AGN 1ES 1927+654
1ES 1927+654 is a nearby active galactic nucleus (AGN) that underwent a changing-look event in early 2018, developing prominent broad Balmer lines that were absent in previous observations. We have followed up this object in the X-rays with an ongoing campaign that started in 2018 May and that includes 265 …