Supernovae and Astrophysical Gas Dynamics

超新星是已知能量最高的恒星爆炸。它们将爆炸恒星的外层（在许多情况下是太阳质量的几倍）以每秒1000公里到每秒10000公里的速度喷射到太空中。喷射物膨胀到周围的星际气体中，压缩它，并在许多情况下诱导恒星形成。首席研究员建议通过计算研究超新星喷出物与星际气体之间的相互作用。他还建议研究超新星爆炸的某些细节，比如爆炸后遗留下来的物质落在致密物体上。此外，他建议使用超新星研究中使用的相同数值技术来研究星系的形成。

Supernovae are the most energetic stellar explosions known. They eject the exploding stars' outer envelopes (in many cases having several times the mass of the sun) into space at speeds of several 1000 km/sec to a few 10,000 km/sec. The ejecta expand into the surrounding interstellar gas, compress it, and in many cases induce star formation. The Principal Investigator proposes to study computationally the interaction between supernova ejecta and the interstellar gas. He also proposes to study certain details of the supernova explosion, such as the matter falling onto the compact object remaining after the explosion. Further-more, he proposes to use the same numerical techniques used in the supernova study to investigate galaxy formation.