Constraints on millicharged dark matter and axionlike particles from timing of radio waves
Constraints on millicharged dark matter and axionlike particles from timing of radio waves
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DOI：
10.1103/physrevd.100.063515
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发表时间：
2019-02
影响因子：
5
通讯作者：
A. Caputo;L. Sberna;M. Frias;D. Blas;P. Pani;Lijing Shao;Wenming Yan
中科院分区：
文献类型：
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作者：
A. Caputo;L. Sberna;M. Frias;D. Blas;P. Pani;Lijing Shao;Wenming Yan
我们推导出的限制毫荷电暗物质和轴子粒子使用脉冲星定时和快速射电暴观测。对于电荷为ee的暗物质粒子，波到达时间（TOA）的约束为e/mmillip 10-8 eV-1，对于质量为mmillip 10-6 eV。对于类轴子粒子，来自双极子的信号的偏振产生轴向耦合g/ma = 10-13 GeV-1/（10-22 eV）的束缚，对于ma = 10-19 eV。对于总暗物质能量密度ρdm的分数，两个边界的尺度都是（ρ/ρdm）1/2。我们做了一个精确的研究，这些边界使用TOA从几个卫星，FRB 121102，和偏振测量PSR J 0437 -4715。我们的结果排除了这些暗物质模型的参数空间的一个新区域。
We derive constraints on millicharged dark matter and axionlike particles using pulsar timing and fast radio burst observations. For dark matter particles of charge ee, the constraint from time of arrival (TOA) of waves is e/mmilli≲10-8 eV-1, for masses mmilli≳10-6 eV. For axionlike particles, the polarization of the signals from pulsars yields a bound in the axial coupling g/ma≲10-13 GeV-1/(10-22 eV), for ma≲10-19 eV. Both bounds scale as (ρ/ρdm)1/2 for fractions of the total dark matter energy density ρdm. We make a precise study of these bounds using TOA from several pulsars, FRB 121102, and polarization measurements of PSR J0437-4715. Our results rule out a new region of the parameter space for these dark matter models.