Size Dependence of Dust Distribution around the Earth Orbit

  title={Size Dependence of Dust Distribution around the Earth Orbit},
  author={Takahiro Ueda and Hiroshi Kobayashi and Taku Takeuchi and Daisuke Ishihara and Toru Kondo and Hidehiro Kaneda},
  journal={The Astronomical Journal},
In the solar system, interplanetary dust particles (IDPs) originating mainly from asteroid collisions and cometary activities drift to Earth orbit due to Poynting–Robertson drag. We analyzed the thermal emission from IDPs that was observed by the first Japanese infrared astronomical satellite, AKARI. The observed surface brightness in the trailing direction of the Earth orbit is 3.7% greater than that in the leading direction in the 9 μm band and 3.0% in the 18 μm band. In order to reveal dust… 

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