This Letter explores the relevance of nanoflare-based models for heating the quiet Sun corona. Using meterwave data from the Murchison Widefield Array, we present the first successful detection of impulsive emissions down to flux densities of ∼mSFU, about two orders of magnitude weaker than earlier attempts. These impulsive emissions have durations ≲1 s and are present throughout the quiet solar corona. The fractional time occupancy of these impulsive emissions at a given region is ≲10%. The histograms of these impulsive emissions follow a power-law distribution and show signs of clustering at small timescales. Our estimate of the energy that must be dumped in the corona to generate these impulsive emissions is consistent with the coronal heating requirements. Additionally, the statistical properties of these impulsive emissions are very similar to those recently determined for magnetic switchbacks by the Parker Solar Probe (PSP). We hope that this work will lead to a renewed in...

中文翻译：

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安静的太阳电晕的脉冲加热贡献的第一个无线电证据

这封信探讨了基于纳米火炬的模型对加热安静的日冕的重要性。我们使用Murchison宽场阵列的米波数据，首次成功地检测出了低至通量密度为〜mSFU的脉冲发射，这比以前的尝试弱了大约两个数量级。这些脉冲发射的持续时间为≲1s，并存在于整个安静的日冕中。在给定区域，这些脉冲发射的时间占比为≲10％。这些脉冲发射的直方图遵循幂律分布，并在较小的时间尺度上显示出聚集的迹象。我们对必须消耗在电晕中以产生这些脉冲发射的能量的估算与日冕加热的要求是一致的。另外，这些脉冲发射的统计特性与最近由Parker太阳探测器（PSP）确定的磁折返的统计特性非常相似。我们希望这项工作能带来新的...