Dr. Feng Yuan (SHAO) visit our group and give colloquium speech

Sep 24, 2010

“AGN Feedback at Sub-pc Scale”

The hot accretion flow is usually optically thin in the radial direction, therefore the photons produced at one radius can travel for a long distance without being absorbed. These photons can thus heat or cool electrons at other radii via Compton scattering. This effect has been ignored in most previous works.

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Dr. Bob Noble (SLAC) visit our group and give colloquium speech

Sep 10, 2010

mission is addressed in this presentation.

“Feasibility of Radioisotope Electric Propulsion for Sample Return Missions”

Fast sample return from primitive objects in the outer Solar System would open an exciting new chapter in space science, but the vast distances make this a daunting task. A sample return mission involves several complicated steps to reach an object and obtain a sample, but only the interplanetary return phase of the mission is addressed in this presentation.

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