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arXiv 2203.08112astro-ph.SRastro-ph.HE
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GLEAM-X J16279 .5-523504.3是一颗白矮星脉冲星

GLEAM-X J16279.5-523504.3 as a White Dwarf Pulsar

J. I. Katz

摘要:

低频射电源GLEAM-X J162759.5 $-$ 523504.3发射脉冲相干偏振发射,类似于射电望远镜。然而,它的周期为18.18分(1091秒),比已证实的射电望远镜长数百倍,如果它是一颗中子星,它的平均辐射功率超过其自旋下降功率的上限一个数量级以上。如果它是一颗白矮星脉冲星,它的转动惯量比中子星大几个数量级,这一现象就可以得到解释。发射电荷聚束的洛伦兹因子可由其辐射的时间子结构的宽度从下方界定。如果辐射是曲率辐射,那么曲率的曲率半径可以从洛伦兹因子和辐射频率估算出来;它与白矮星的内磁层相一致,但与中子星的不一致。

英文摘要:

The low frequency radio source GLEAM-X J162759.5$-$523504.3 emits pulsed coherent polarized emission like that of radio pulsars. Yet its period of 18.18 min (1091 s) is hundreds of times longer than those of confirmed radio pulsars, and if it is a neutron star its mean radiated power exceeds the upper limit on its spin-down power by more than an order of magnitude. This may be explained if it is a white dwarf pulsar, with a moment of inertia several orders of magnitude greater than those of neutron stars. The Lorentz factor of the emitting charge bunches may be bounded from below by the widths of the temporal substructure of their radiation. If the emission is curvature radiation, the radius of curvature may be estimated from the Lorentz factor and the frequencies of emission; it is consistent with a white dwarf's inner magnetosphere but not a neutron star's.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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