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Galaxies 2016, 4(3), 16; doi:10.3390/galaxies4030016

The Classifications and Some Correlations for Fermi Blazars

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
Received: 14 July 2016 / Revised: 17 August 2016 / Accepted: 17 August 2016 / Published: 29 August 2016
(This article belongs to the Special Issue Blazars through Sharp Multi-wavelength Eyes)
View Full-Text   |   Download PDF [1430 KB, uploaded 29 August 2016]   |  

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
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Fan, J.; Liu, Y.; Yang, J.; Lin, C.; Hao, J.; Xiao, H. The Classifications and Some Correlations for Fermi Blazars. Galaxies 2016, 4, 16.

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