【摘 要】
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We propose that fast radio bursts (FRBs) can be used as probes to constrain the possible anisotropic dis-tribution of baryon matter in the Universe.Monte Carlo simulations show that 400 (800) FRBs are sufficient to de-tect the anisotropy at a 95％ (99％) co
【机 构】
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Department of Physics,Chongqing University,Chongqing 401331,China;Center for Gravitation and Cosmolo
论文部分内容阅读
We propose that fast radio bursts (FRBs) can be used as probes to constrain the possible anisotropic dis-tribution of baryon matter in the Universe.Monte Carlo simulations show that 400 (800) FRBs are sufficient to de-tect the anisotropy at a 95％ (99％) confidence level if the dipole amplitude has an order of magnitude of 0.01.However,more FRBs are required to tightly constrain the dipole direction.Even 1000 FRBs are insufficient to con-strain the dipole direction within the angular uncertainty Δθ ＜ 40° at a 95％ confidence level.The uncertainty on the dispersion measure of a host galaxy does not significantly affect the results.However,if the dipole amplitude is in the region of 0.001,1000 FRBs are not enough to correctly detect the anisotropic signal.
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