PSR J0250 +5854是否处于霍尔吸引子阶段?
Is PSR J0250+5854 at the Hall attractor stage?
摘要:
本文提出,最近发现的自转周期为23.5秒的射电脉冲星J0250+5854目前正处于霍尔吸引子阶段。这可以解释低温和缺乏磁星活动的这个源连同其自旋周期和周期导数。我们目前的计算结果的演变,这个来源在一个简单的模型磁场衰减。中子星可以从磁星开始演化,初始磁场为$\sim 10^{14}-10^{15}$ G,参数$Q$的实际范围描述地壳的缺陷。未来对这颗中子星表面温度和年龄的测量可能有助于探索这一假设。
英文摘要:
In this note we propose that recently discovered radio pulsar J0250+5854 with 23.5 sec spin period is presently at the Hall attractor stage. This can explain low temperature and absence of magnetar-like activity of this source together with its spin period and period derivative. We present results of calculations of the evolution of this source in a simple model of magnetic field decay. The neutron star could start its evolution as a magnetar with initial field $\sim 10^{14}-10^{15}$ G for realistic range of parameter $Q$ describing crust imperfections. Future measurements of surface temperature and age of this neutron star might help to probe this hypothesis.
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