A universal energy distribution for FRB 121102. (arXiv:1904.12408v1 [astro-ph.HE])
<a href="http://arxiv.org/find/astro-ph/1/au:+Wang_F/0/1/0/all/0/1">F. Y. Wang</a> (NJU), <a href="http://arxiv.org/find/astro-ph/1/au:+Zhang_G/0/1/0/all/0/1">G. Q. Zhang</a> (NJU)
Fast radio bursts (FRBs) are milliseconds radio transients with large
dispersion measures (DMs). An outstanding question is the relation between
repeating FRBs and those with a single burst. In this paper, we study the
energy distribution of the repeating FRB 121102. For a power-law distribution
of energy $dN/dEpropto E^{-alpha_E}$, we show that the value of $alpha_E$ is
in a narrow range $1.6-1.8$ for bursts observed by different telescopes at
different frequencies, which indicates a universal energy distribution for FRB
121102. Interestingly, similar power-law index of energy distribution for
non-repeating FRBs observed by Parkes and ASKAP is also found. Implications of
such a universal energy distribution are discussed.
Fast radio bursts (FRBs) are milliseconds radio transients with large
dispersion measures (DMs). An outstanding question is the relation between
repeating FRBs and those with a single burst. In this paper, we study the
energy distribution of the repeating FRB 121102. For a power-law distribution
of energy $dN/dEpropto E^{-alpha_E}$, we show that the value of $alpha_E$ is
in a narrow range $1.6-1.8$ for bursts observed by different telescopes at
different frequencies, which indicates a universal energy distribution for FRB
121102. Interestingly, similar power-law index of energy distribution for
non-repeating FRBs observed by Parkes and ASKAP is also found. Implications of
such a universal energy distribution are discussed.
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