R. S. Yang
Articles written in Journal of Astrophysics and Astronomy
Volume 32 Issue 1-2 March 2011 pp 307-308 Part 7. Other Topics
Based on a sample of radio galaxies, the effective spectrum index 𝛼RO (178 MHz to 0.54 𝜇m), the radio and the V-band optical luminosities are investigated for FR-I, FR-II(G) and FR-II(Q).
Volume 35 Issue 3 September 2014 pp 401-404 Posters
Based on Fermi 1FGL and 2FGL data, a sample of 572 𝛾-ray loud blazars are selected, in which each source has both 𝛾-ray flux and spectral index in 1FGL and 2FGL, respectively. Theoretic relation of spectral index changes depending on 𝛾-ray brightness is obtained. The correlations between the ratio of 𝛾-ray flux densities and the differences of the 𝛾-ray spectral indices are discussed for the three subclasses of HBL, LBL and FSRQs. Results show that the ratio is related with the differences for the three subclasses. It is consistent with the theoretical result and it indicates that the spectrum becomes flat as the source brightens in the 𝛾-ray band.
Volume 35 Issue 3 September 2014 pp 405-406 Posters
From some available literatures, a sample of 393 radio sources is selected. The core and extended spectral indices are calculated. Results show that the core spectral index is different from the extended spectral index with the middle values approximately being 0 and 0.8 respectively.
Volume 40 | Issue 4
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