论文标题
矮人球星系中的白色矮人：新的紧凑型降水探测器
White Dwarfs in Dwarf Spheroidal Galaxies: A New Class of Compact-Dark-Matter Detectors
论文作者
论文摘要
最近的调查发现了一群微弱的超新星，被称为富含CA的间隙瞬变，推断出源自白色矮人的爆炸性点火。除了它们独特的光谱和亮度外，这些超新星还具有异常的空间分布，并且主要与假定的宿主星系相距较远。我们表明，富含CA的间隙瞬变的位置与围绕大型星系的矮球星系的分布很好地匹配，在这种情况下，暗物质相互作用会引起低质量的白色dwarf中的热核爆炸，否则可能很难被标准的Stellar或Biary Evolution Instart或Biary Evolutians引发。一个合理的候选人解释观察到的事件率是原始黑洞，质量高于$ 10^{21} $ grams。
Recent surveys have discovered a population of faint supernovae, known as Ca-rich gap transients, inferred to originate from explosive ignitions of white dwarfs. In addition to their unique spectra and luminosities, these supernovae have an unusual spatial distribution and are predominantly found at large distances from their presumed host galaxies. We show that the locations of Ca-rich gap transients are well matched to the distribution of dwarf spheroidal galaxies surrounding large galaxies, in accordance with a scenario where dark matter interactions induce thermonuclear explosions among low-mass white dwarfs that may be otherwise difficult to ignite with standard stellar or binary evolution mechanisms. A plausible candidate to explain the observed event rate are primordial black holes with masses above $10^{21}$ grams.
