SGR的超级耀斑作为毫秒河外射电爆发的引擎
Hyperflares of SGRs as an engine for millisecond extragalactic radio bursts
摘要：
我们认为Lorimer等人（2007）发现的强毫秒河外射电爆发（mERB）可能与河外软伽马射线中继器的超耀斑有关。这种超耀斑的预期速率$\sim$ 20 - 100 d $^{-1}$ Gpc $^{-3}$与Lorimer等人估计的值非常一致。无线电发射的可能机制与Lyutikov（2002）讨论的磁星磁层中的撕裂模不稳定性有关，并且可以使用脉冲串能量的简单缩放从mERB产生对应于观测到的$\sim$ 30 μ y的无线电通量。
英文摘要：
We propose that the strong millisecond extragalactic radio burst (mERB) discovered by Lorimer et al. (2007) may be related to a hyperflare from an extragalactic soft gamma-ray repeater. The expected rate of such hyperflares, $\sim$ 20 - 100 d$^{-1}$ Gpc$^{-3}$, is in good correspondence with the value estimated by Lorimer et al. The possible mechanism of radio emission can be related to the tearing mode instability in the magnetar magnetosphere as discussed by Lyutikov (2002), and can produce the radio flux corresponding to the observed $\sim$ 30 Jy from the mERB using a simple scaling of the burst energy.
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