천문학회보 (The Bulletin of The Korean Astronomical Society)
- 제35권1호
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- Pages.70.2-70.2
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- 2010
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- 1226-2692(pISSN)
KARI infrared observations of the Crab Nebula
- Im, Soo-Jin (Seoul National University) ;
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Koo, Bon-Chul
(Seoul National University) ;
- Lee, Jae-Joon (Pennsylvania State University) ;
- Lee, Ho-Gyu (University of Toronto)
- 발행 : 2010.04.06
초록
We present near- and mid-infrared images of the Crab Nebula, taken with the Infrared Camera (IRC) onboard the AKARI infrared space telescope. These images have a field-of-view of 10'*10' and show the full extent of the nebula at 3, 4, 7, 11, 15, and 24 um. The Crab nebula in near infrared is dominated by synchrotron emission while, in mid infrared, the ionic forbidden lines of Ar, Ne, S, and Fe makes significant contribution. We separate the line emission from synchrotron emission in 3-15 um AKARI bands using the ISOCAM CVF data, and present separate images for the line and synchrotron emissions in each band. We derive the total synchrotron fluxes of the Crab nebula in these bands, which are used to complete the synchrotron spectral energy distribution of the Crab nebula from radio to X-rays. We discuss the spectral variations of the Crab nebula.
키워드