Extremes Meet: Radio and Gamma-Ray Observations of Clusters of Galaxies, from Dark Matter to Cosmic Rays

该提议旨在利用对星系团的观测来研究暗物质粒子的模型。星系团可以被认为是巨大的非辐射物质的储存库，因此是“暗”物质。暗物质的粒子对引力做出反应，但对它们的其他方面知之甚少。理论预测暗物质粒子将湮灭或衰变，产生伽马射线发射，外加高能电子和正电子，这些电子和正电子可以辐射到电磁光谱的其他区域。该团队的模型显示，暗物质湮灭的产物通过它们的射电发射得到了最好的跟踪，他们将使用星系团来研究这种射电联系。该团队的模型还表明，暗物质衰变的产物通过其伽马射线发射得到最好的跟踪，他们将使用星系团来研究这种伽马射线联系。最后，该团队将修改他们的模型，并将其应用于展示射电光晕的不寻常星团，试图解决长期存在的光晕起源问题。国际物理学会将继续在部门、机构和国家各级努力促进妇女参与物理学。她将扩大这些部门和机构的努力，以包括其他代表性不足的群体

The proposal aims to use observations of galaxy clusters to investigate models for dark-matter particles. Galaxy clusters can be thought of as enormous reservoirs of non-radiating, thus "dark", matter. Particles of dark matter respond to the force of gravity, but little else is known about them. Theories predict that dark-matter particles will annihilate or decay, yielding gamma-ray emission plus high-energy electrons and positrons that can radiate in other regions of the electromagnetic spectrum. The team's models show that the products of dark-matter annihilation are best traced via their radio emission, and they will use galaxy clusters to investigate that radio linkage. The team's models also show that the products of dark-matter decay are best traced via their gamma-ray emission, and they will use galaxy clusters to investigate that gamma-ray linkage. Finally, the team will modify their models and apply them to unusual clusters that exhibit radio halos, to try to solve the long-standing problem of the halos' origin. The PI will continue her efforts at departmental, institutional, and national levels to promote the involvement of women in physics. She will expand these departmental and institutional efforts to include other underrepresented groups