Cosmic Anisotropy and Fast Radio Bursts. (arXiv:1902.03580v1 [astro-ph.CO])

<a href="http://arxiv.org/find/astro-ph/1/au:+Qiang_D/0/1/0/all/0/1">Da-Chun Qiang</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Deng_H/0/1/0/all/0/1">Hua-Kai Deng</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Wei_H/0/1/0/all/0/1">Hao Wei</a>

In the recent years, the field of Fast Radio Bursts (FRBs) is thriving and

growing rapidly. It is of interest to study cosmology by using FRBs with known

redshifts. In the present work, we try to test the possible cosmic anisotropy

with the simulated FRBs. We find that at least 2800, 190, 100 FRBs are

competent to find the cosmic anisotropy with a dipole amplitude 0.01, 0.03,

0.05, respectively. Unfortunately, even 10000 FRBs are not competent to find

the tiny cosmic anisotropy with a dipole amplitude of ${cal O}(10^{-3})$. On

the other hand, at least 20 FRBs with known redshifts are competent to find the

cosmic anisotropy with a dipole amplitude 0.1. We expect that such a big cosmic

anisotropy can be ruled out by using only a few tens of FRBs with known

redshifts in the near future.

In the recent years, the field of Fast Radio Bursts (FRBs) is thriving and

growing rapidly. It is of interest to study cosmology by using FRBs with known

redshifts. In the present work, we try to test the possible cosmic anisotropy

with the simulated FRBs. We find that at least 2800, 190, 100 FRBs are

competent to find the cosmic anisotropy with a dipole amplitude 0.01, 0.03,

0.05, respectively. Unfortunately, even 10000 FRBs are not competent to find

the tiny cosmic anisotropy with a dipole amplitude of ${cal O}(10^{-3})$. On

the other hand, at least 20 FRBs with known redshifts are competent to find the

cosmic anisotropy with a dipole amplitude 0.1. We expect that such a big cosmic

anisotropy can be ruled out by using only a few tens of FRBs with known

redshifts in the near future.

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