Blazar-boosted dark matter at Super-Kamiokande
Blazar-boosted dark matter at Super-Kamiokande
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DOI：
10.1088/1475-7516/2022/07/013
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发表时间：
2022-02
影响因子：
6.4
通讯作者：
A. Granelli;P. Ullio;Jin-Wei Wang
中科院分区：
文献类型：
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作者：
A. Granelli;P. Ullio;Jin-Wei Wang
耀变体中心附近的暗物质粒子，在与耀变体喷流中的相对论性电子和质子发生弹性碰撞后被加速，其能量足以触发地球探测器的可探测信号。在这项工作中，专注于耀变体TXS 0506+056和BL Lacertae，我们推导出新的限制暗物质和电子之间的弹性散射截面通过可用的Super-Kamiokande数据。由于大的耀变体增强的暗物质通量，对于质量低于100 MeV的暗物质，暗物质-电子散射截面的极限可以低至10-38 cm 2，这比银河宇宙射线的类似结果强几个数量级。
Dark matter particles near the center of a blazar, after being accelerated by the elastic collisions with relativistic electrons and protons in the blazar jet, can be energetic enough to trigger detectable signals at terrestrial detectors. In this work, focusing on the blazars TXS 0506+056 and BL Lacertae, we derive novel limits on the cross section of the elastic scattering between dark matter and electrons by means of the available Super-Kamiokande data. Thanks to the large blazar-boosted dark matter flux, the limit on the dark matter-electron scattering cross section for dark matter masses below 100 MeV can be as low as ∼ 10-38 cm2, that is orders of magnitude stronger than the analogous results from galactic cosmic rays.