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

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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