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The Spatially Resolved AKARI Observations and its Far-IR Properties 2009-04-22

  • Speaker : Dr. Woong-Seob Jeong (KASI)
  • Date : 2009-04-22 16:00 ~ 17:00
The Far-Infrared Surveyor (FIS) is one of the focal-plane instruments of the AKARI (formerly known as ASTRO-F) satellite, which was launched in February 2006. AKARI satellite is currently performing the warm mission. We present the spatially resolved Far-IR observations from AKARI mission. The FIS had performed the all-sky survey in 4 Far-IR <br />
bands (50-200um ragne) during around 500 days as well as the deep pointed observations. From the all-sky survey, we extracted reliable point sources matched with IRAS catalogue. We found possibilities that flux measurements of some IRAS sources with a bad flux quality were overestimated and flux measurements are affected by a local background rather than a global background. Owing to its higher resolution, it resolved a cirrus background and an individual sources effectively, which will enable us to get more reliable point source catalogue and a detailed structure of background. Our deep pointed observations can explore the Cosmic Far-Infrared Background (CFIRB) which contains information about the number and distribution of contributing sources. AKARI Far-IR observation is expected to find new extragalactic sources and to understand the nature of CFIRB.
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