Long-term timing evolution of four Anomalous X-Ray Pulsars

Han-Long Peng, Shan-Shan Weng, Ming-Yu Ge +9

Anomalous X-ray pulsars (AXPs) and soft gamma-ray repeaters (SGRs) are believed to be manifestations of magnetars. Typically, AXPs exhibit higher X-ray luminosities, whereas SGRs a…