Journal
RESEARCH IN ASTRONOMY AND ASTROPHYSICS
Volume 13, Issue 3, Pages 259-269Publisher
NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
DOI: 10.1088/1674-4527/13/3/002
Keywords
galaxies: active; galaxies: BL Lacertae objects; galaxies: quasars; galaxies: jets
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Funding
- National Natural Science Foundation of China [11173009]
- National Basic Research Program of China (973 program) [2007CB815405]
- Bureau of Education of Guangzhou Municipality [11 Sui-Jiao-Ke[2009]]
- Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme (GDUPS)
- Yangcheng Scholar Funded Scheme [10A027S]
- Joint Laboratory for Optical Astronomy of Chinese Academy of Sciences
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Observations suggest that gamma-ray loud blazars are strongly beamed. The Fermi mission has detected many of blazars, which provide us with a good opportunity to investigate the emission mechanism and the beaming effect in the gamma-ray region. We compiled the X-ray observations for 138 Fermi blazars (54 flat spectrum radio quasars, 36 low-peaked BL Lacertae objects, and 48 high-peaked BL Lacertae objects) and calculated their Doppler factors, delta(gamma) . It is interesting that the calculated Doppler factors, delta(gamma), are strongly correlated with the gamma-ray luminosity.
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