论文标题
定期调制的FRB活动的测试模型
Testing Models of Periodically Modulated FRB Activity
论文作者
论文摘要
重复的FRB 20180916b的活性定期调制为16.3天，而FRB 121102的活性可能会以大约160天的时间进行调节。在此调制的某些模型中，周期衍生物对不确定参数不敏感。这些模型可以通过对衍生物上的测量或边界进行测试。在其他模型中，不确定参数的值可以受到约束。周期性调制的狭窄的光束沿着圆锥形或漏斗沿预进盘的轴（例如X射线二进制文件中的积聚盘）在锥形或漏斗中徘徊，可能会导致临时爆发活性的定期调节。中子恒星既不积聚也不是二进制的中子恒星生产FRB 200428，然后显示出普遍性：连贯的发射可能发生在广泛的环境中。
The activity of the repeating FRB 20180916B is periodically modulated with a period of 16.3 days, and FRB 121102 may be similarly modulated with a period of about 160 days. In some models of this modulation the period derivative is insensitive to the uncertain parameters; these models can be tested by measurement of or bounds on the derivative. In other models values of the uncertain parameters can be constrained. Periodic modulation of aperiodic bursting activity may result from emission by a narrow beam wandering within a cone or funnel along the axis of a precessing disc, such as the accretion discs in X-ray binaries. The production of FRB 200428 by a neutron star that is neither accreting nor in a binary then shows universality: coherent emission may occur in a wide range of environments.
