[Cosmo-torun] NVSS velocity dipole 4 times bigger than CMB velocity dipole, but same direction

Boud Roukema boud w astro.uni.torun.pl
Pon, 31 Paź 2011, 11:11:43 CET

hi cosmo-torun

There's a very interesting paper by Ashok Singal from Ahmedabad:

   Large peculiar motion of the solar system from the dipole anisotropy
   in sky brightness due to distant radio sources
   Authors: Ashok K. Singal

The principle and method are essentially straightforward, the data set
is public and the analysis looks simple. The result is that the NVSS
velocity dipole for faint radio sources is 4 times bigger than the CMB
velocity dipole, but in about the same direction.

My speculation is that somewhere there was a multiplication by two 
instead of dividing by two, but i didn't find it from a quick browse
through the paper.

If there is no error, then this sounds like a rather huge, large-scale
bulk velocity.


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