用MAGIC在邻近的dSph星系中寻找DM：候选、结果和展望
The search for DM in nearby dSph galaxies with MAGIC: candidates, results and prospects
摘要：
目前，银河系的矮球状星系卫星可能是用伽马射线望远镜研究暗物质的最佳天体。它们呈现出宇宙中已知的最高质光比。此外，它们中的许多离地球足够近，能够产生高预测的DM湮灭通量，可以通过目前的伽马射线仪器（如MAGIC）观察到。随着最近新矮星的发现，这幅图景变得更加美好。这些新的天体预计会产生更高的DM湮灭通量，因为它们中的大多数比以前已知的矮星更近，并且是DM主导的系统。这里给出了最佳候选人的暂定名单。本文还介绍了MAGIC对天龙座矮星的观测结果以及其他切伦科夫望远镜对其他矮星的观测结果。最后，我们讨论了这类对象的检测前景的背景下，DM搜索。
英文摘要：
At present, dwarf spheroidal galaxies satellites of the Milky Way may represent the best astrophysical objects for dark matter (DM) searches with gamma-ray telescopes. They present the highest mass-to-light ratios known in the Universe. Furthermore, many of them are near enough from the Earth to be able to yield high predicted DM annihilation fluxes that might be observed by current gamma-ray instruments like MAGIC. The picture has become even better with the recent discovery of new dwarfs. These new objects are expected to yield even higher DM annihilation fluxes, since most of them are nearer than the previously known dwarfs and are even more DM dominated systems. Here a tentative list of the best candidates is given. The observational results obtained with MAGIC from the Draco dwarf as well as the observation of other dwarfs carried out by other Cherenkov telescopes are presented as well. Finally, we discuss the detection prospects of such kind of objects in the context of DM searches.
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