在受激氢原子中传播的非相干光束之间的相互作用;在天体物理学中的应用
Interaction between incoherent light beams propagating in excited atomic hydrogen; applications in astrophysics
摘要：
虽然通常假设几束光在折射介质中独立传播，但激光束的例外可以扩展到通常的时间非相干光，只要满足空间相干的条件。很少有分子具有方便的性质，最简单的是2S和2 P态的氢原子（这里称为H*）。相互作用增加了一组光束的熵，而没有H* 的永久激发，具有高普朗克温度的光束的能量损失产生其频率的降低，并且热辐射获得能量。氢原子在其基态被莱曼α吸收泵到H*，产生光的红移。莱曼散射和它们产生的红移的组合引起振荡，振荡产生一个光谱，在这个光谱中，谱线通过相对频移相互推导，相对频移是整数与常数z_b=0.062的乘积。这些纯物理的结果可以应用于天体物理学，寻找H* 可能出现的地方。特别是，计算出的吸积中子星的光谱与类星体的光谱非常一致，这可能解释了这些恒星似乎从未被观测到。先锋号探测器发出的无线电信号频率过高，可能是由于太阳风冷却产生H*，从而使太阳光的能量转移所致。一个类似的转移到CMB可以解释它的各向异性约束到黄道。
英文摘要：
While it is generally assumed that several light beams propagate independently in a refracting medium, the exception of laser beams may be extended to usual time-incoherent light provided that conditions of space-coherence are fulfilled. Very few molecules have convenient properties, the simplest one being atomic hydrogen in 2S and 2P states (called H* here). The interaction increases the entropy of a set of beams without a permanent excitation of H*, a loss of energy by a beam having a high Planck's temperature producing a decrease of its frequency, and the thermal radiation getting energy. Atomic hydrogen in its ground state is pumped to H* by Lyman alpha absorptions, producing a redshift of the light. The combination of the Lyman absorptions and the redshifts they produce, induce oscillations which generate a spectrum in which the lines deduce from each other by relative frequency shifts which are products of an integer by a constant z_b=0.062. These purely physical results may be applied in astrophysics, searching where H* may appear. In particular, the computed spectra of the accreting neutron stars, remarkably identical to the spectra of the quasars, may explain that these stars seem never observed. The too high frequencies of the radio signals from the Pioneer probes may result from a transfer of energy from the solar light allowed by a cooling of the solar wind able to produce H*. A similar transfer to the CMB may explain its anisotropy bound to the ecliptic.
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