The supernova remnant CTB 37B and its associated magnetar CXOU J171405.7-381031:evidence for a magnetar-driven remnant

摘要

We discuss the association between the candidate magnetar CXOU J171405.7-381031 and the supernova remnant CTB 37B.The recent detection of the period derivative of the object allowed an estimation of a young characteristic age of only ～ 1000yr.This value is too small to be compatible even with the minimum radius of the remnant being ≥ 10 pc,the value corresponding to the lower limit of the estimated distance of 10.2 ± 3.5 kpc,unless the true distance happens to be even smaller than the lower limit.We argue that a consistent scenario for the remnant's origin,in which the latter is powered by the energy injected by a young magnetar,is indeed more accurate to explain the young age,and demonstrates its non-standard(i.e.magnetar-driven) nature.