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Radio Variability of a Fermi Large Area Telescope Bright Source 0FGL J1847.8+3223

  • Authors: S. Kida, K. Niinuma, K. Tekefuji, T. Tanaka, T. Aoki, K. Asuma, S. Nakagawa, H. Uehara, H. Akamatsu, A. Imai, H. Miyata, J. Ikouga, A. Otsubo, K. Odai, R. Kodama, Y. Takanashi, N. Nakamizo, Y. Yamada, R. Hiruma, N. Furukawa, N. Matsumura, and T. Daishido

KIDA et al. 2010 The Astrophysical Journal Letters 714 L36.

  • Provider: AAS Journals

Caption: Figure 1.

Integrated fringe data and analytical results obtained using Quick-Look Data Analysis (Takefuji et al. 2007). The fringe data were standardized by the noise dispersion and were processed five points moving average. Left: the steady source CGCG 502-027. Hardly any flux variability was observed in the 1970s. The flux density is 2635.7 mJy according to the NVSS catalog. Center: the steady source 4C +32.60. Hardly any flux variability was observed in the 1970s. The flux density is 625.7 mJy according to the NVSS catalog. Right: a Fermi LAT bright source B2 1846+32A. The flux density detected by us was stronger than the values observed in the 1980s and 1990s. A flux density of at least 1200 mJy and 1600 mJy was detected in 2004 and in 2005, respectively. In the 1980s and 1990s, the flux density was about 500 mJy.

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