The Gamma-ray Emissions from BL Lac Objects

YANG Jiang-he

Astronomical Research and Technology > 2005 > 2(2): 67-74.

YANG Jiang-he. The Gamma-ray Emissions from BL Lac Objects[J]. Astronomical Research and Technology, 2005, 2(2): 67-74.

Citation:

YANG Jiang-he. The Gamma-ray Emissions from BL Lac Objects[J]. Astronomical Research and Technology, 2005, 2(2): 67-74.

Citation:

YANG Jiang-he. The Gamma-ray Emissions from BL Lac Objects[J]. Astronomical Research and Technology, 2005, 2(2): 67-74.

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The Gamma-ray Emissions from BL Lac Objects

YANG Jiang-he^1,2

1.
Department of Physics and Electronics Science, Hunan University of Arts and Science, Changde 415000, China
2.
Center for Astrophysics, Guangzhou University, Guangzhou 510405, China

Funds: This work is supported partially by the National 973 project(NKBRSF G19990754), the National Science Fund for Distinguished Young Scholars(10125313), and the Fund for Top Scholars of Guangdong Province(Q02114).

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Received Date: September 21, 2004
Revised Date: December 27, 2004
Published Date: April 14, 2005

Graphical Abstract

Abstract

Abstract

The γ-ray emission mechanism is still an open question. BL Lac objects are an extreme subclass of active galactic nuclei. In this paper, we have collected 22 BL Lacertae objects, and investigated the possible correlations between the γ-ray emission(maximum, minimum and average data) at 1 GeV and the radio emission at 8. 4GHz. Our results are as follows. For minimum γ-ray data, there is no correlation between the γ-ray and radio flux density;For maximum and average γ-ray data, there are correlations for the 22 BL Lac objects. In addition, there is a correlation between the γ-ray and radio spectral index. According to our analysis, we have proposed that the γ-rays are likely from the synchrotron self-compton process in this case.
- BL Lacertae,
- γ-ray,
- radio emission,
- flux density,
- spectral index,
- correlations

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