在LambdaCDM模型中，Local Group速度和2MASS红移巡天偶极的不对准是典型的吗？
Is the misalignment of the Local Group velocity and the 2MASS Redshift Survey dipole typical in a LambdaCDM model?
摘要：
在LambdaCDM和星系晕模型的框架下，我们预测了2MASS红移巡天产生的本星系群的加速度。我们发现，由于来自晕模型的星系波动有更多的权力在小尺度上相比，质量波动，CMB速度矢量和2MRS偶极子之间的失调角是在合理的协议与观察到的21度。这个统计分析表明，没有必要援引一个假设的附近星系或遥远的星系团来解释这种错位。
英文摘要：
We predict the acceleration of the Local Group generated by the 2MASS Redshift Survey within the framework of LambdaCDM and the halo model of galaxies. We show that as the galaxy fluctuations derived from the halo model have more power on small scales compared with the mass fluctuations, the misalignment angle between the CMB velocity vector and the 2MRS dipole is in reasonable agreement with the observed 21 degrees. This statistical analysis suggests that it is not necessary to invoke a hypothetical nearby galaxy or a distant cluster to explain this misalignment.
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