US-Brazil Cooperative Research on: Radio Continuum EmissionPhotodissociation and Photoionization in Comets

该奖项支持合作研究， 西南部的沃尔特·许布纳的彗星天文学 研究所和P.D.辛格大学的 巴西的圣保罗。 他们将测量连续统 彗星的无线电辐射， 厘米波长范围。 这些排放物可能是 解释为来自聚集体的热辐射， 有机物和耐火硅酸盐颗粒 温度比冰高。 此外他们 将研究光解离和光电离 选定重有机分子的速率系数 以及它们的衰变产物 这两位科学家将开发一个计算机模型， 这些聚集体的微波热辐射 几颗彗星的核心。 这种合作 将是一个很好的理论和 观察能力。 因此，合作 将使彗星科学领域受益， 鼓励和加强巴西和美国。 天文学

This award supports cooperative research in the astronomy of comets by Walter Huebner of the Southwest Research Institute and P.D. Singh of the University of Sao Paulo in Brazil. They will measure the continuum radio emission from comets in the millimeter and centimeter wavelength range. These emissions may be explained as thermal radiation from aggregates of organic and refractory-silicate particles that radiate at a higher temperature than ice. In addition, they will investigate photodissociation and photoionization rate coefficients of selected heavy organic molecules and their decay products. The two scientists will develop a computer model for microwave thermal emission from these aggregates near the nucleus of several comets. This collaboration will be an excellent blend of theoretical and observational capabilities. Therefore the cooperation will benefit the field of cometary science as well as encourage and strengthen both Brazilian and U.S. astronomy.