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The Classifications and Some Correlations for Fermi Blazars


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1

Center for Astrophysics, Guangzhou University, Guangzhou 510006, China

2

Astronomy Science and Technology Research Laboratory of Department of Education of Guangdong Province, Guangzhou 510006, China

3

Department of Physics and Electronics Science, Hunan University of Arts and Science, Changde 415000, China





*

Author to whom correspondence should be addressed.



Academic Editors: Jose L. Gómez, Alan P. Marscher and Svetlana G. Jorstad

Abstract In a recent paper, we constructed the spectral energy distributions SEDs for 1425 Fermi blazars. We classify them as low synchrotron peak sources LSPs if log ν p Hz ≤ 14.0, intermediate synchrotron peak sources ISPs if 14.0 < log ν p Hz ≤ 15.3 , and high synchrotron peak sources HSPs if log ν p Hz > 15.3 . We obtain an empirical relation to estimate the synchrotron peak frequency, ν p Eq . from effective spectral indexes α o x and α r o as log ν p Eq . = 16 + 4.238 X if X < 0 , and log ν p Eq . = 16 + 4.005 Y if X > 0 , where X = 1.0 − 1.262 α r o − 0.623 α o x and Y = 1.0 + 0.034 α r o − 0.978 α o x . In the present work, we investigate the correlation between the peak frequency and the radio-to-X-ray spectral index, between peak luminosity bolometric luminosity and γ-ray-optical luminosity, and between peak luminosity and bolometric luminosity. Some discussion is presented. View Full-Text

Keywords: galaxies: active; galaxies: jets; galaxies: nuclei galaxies: active; galaxies: jets; galaxies: nuclei





Autor: Junhui Fan 1,2,* , Yi Liu 1,2, Jianghe Yang 3, Chao Lin 1,2, Jingmeng Hao 1,2 and Hubing Xiao 1,2

Fuente: http://mdpi.com/



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