论文标题
红移漂移的综合分析
Cosmographic analysis of redshift drift
论文作者
论文摘要
红移漂移是一种现象，即在扩展的flrw宇宙中观察到的发射极和观察者之间的红移和观察者之间的红移将慢慢发展 - 在与哈勃时间相当的时间表上。然而，仍然有严重的天文学建议可以实际观察这种效果。但是，我们将追求一个更抽象的理论目标，并对这种效果进行一般的掌握分析，避免（目前）动态考虑，而有利于纯粹的运动对称性考虑和基于FLRW SpaceTime的Taylor系列扩展。我们将根据当今的哈勃，减速，混蛋，快照，裂纹和流行参数以及当今源的红移，为红移漂移（及其衍生物）以及当今的红移漂移（及其导数）以及当今的红移。特别是，这种红移漂移效应的潜在观察与表现出非零减速参数的宇宙密切相关。
Redshift drift is the phenomenon whereby the observed redshift between an emitter and observer comoving with the Hubble flow in an expanding FLRW universe will slowly evolve -- on a timescale comparable to the Hubble time. There are nevertheless serious astrometric proposals for actually observing this effect. We shall however pursue a more abstract theoretical goal, and perform a general cosmographic analysis of this effect, eschewing (for now) dynamical considerations in favour of purely kinematic symmetry considerations and Taylor series expansions based on FLRW spacetimes. We shall develop various exact results and series expansions for the redshift drift (and its derivative) in terms of the present day Hubble, deceleration, jerk, snap, crackle, and pop parameters, as well as the present day redshift of the source. In particular, potential observation of this redshift drift effect is intimately related to the universe exhibiting a nonzero deceleration parameter.
