朝向麦哲伦云和M31的微透镜：对MACHO的探索仍然开放吗？
Microlensing towards the Magellanic Clouds and M31: is the quest for MACHOs still open?
摘要：
微透镜是搜索和分析致密晕天体（“MACHO”）的首选工具，这是银河系尺度上仍然可行的一类暗物质候选者。不同的分析指出，在排除小于约0.1太阳质量的暗物质MACHO方面达成了一致;然而，对于质量范围（0.1-1）太阳质量的值，仍然存在持续的争论。更强有力的限制，虽然不是所有的协议，来自对麦哲伦云的观测活动（大麦哲伦云和SMC）。对邻近星系M31的分析，即所谓的“像素透镜”机制，拓展了这一研究领域的前景。在这篇文章中，我们首先对最近的结果提出了一个批判性的观点，然后我们专注于对M31的像素透镜分析。
英文摘要：
Microlensing is the tool of choice for the search and the analysis of compact halo objects ("MACHOs"), a still viable class of dark matter candidates at the galactic scale. Different analyses point towards an agreement in excluding dark matter MACHOs of less than about 0.1 solar mass; it remains however an ongoing debate for values in the mass range (0.1-1) solar mass. The more robust constraints, though not all in agreement, come from the observational campaigns towards the Magellanic Clouds (the LMC and the SMC). The analyses towards the nearby galaxy of M31, in the so called "pixel lensing" regime, have expanded the perspectives in this field of research. In this contribution first we draw a critical view on recent results and then we focus on the pixel lensing analysis towards M31 of the PLAN collaboration.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
