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We collecte 205 Blazars (142 BL Lacertae objects and 63 flat spectrum radio quasars(FSRQs)),and investigate the correlation between the redshift, the fluxes in the radio band (5 GHz), optical (V band) , X-ray (1 keV), and the X-ray photon spectral index for the BL Lacertae objects and FSRQs by the correlation analysis and Logistic regression model. The results indicate that major influencing factors on Blazar object classification are the redshift, the fluxes in the radio band (5 GHz), and the X-ray photon spectral index. The derived equation is effective as a substantial criterion for Blazar objects classification, of which the accuracy is 91.2%. Our results strongly support the division of Blazar objects into BL Lacertae objects and FSRQs. We compare the properties of BL Lacertae objects and FSRQs from the fluxes in the optical (V band) and X-ray (1 keV), and find that BL Lacertae objects are not significantly different from FSRQs. The implications of these correlations, which support the evolutionary sequence of Blazar objects, are also discussed.
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Keywords:
- Logistic /
- classification /
- Blazar objects
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[2] Angel J R, Stockman H S 1980 Ann. Rev. Astron. Astrophys. 18 321
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[5] [6] Fan J H, Yuan Y H, Liu Y 2008 Pub. Astron. Soc. Jpn. 60 707
[7] [8] Fan J H 2003 Astrophys. J. 585 L23
[9] [10] [11] Yang J H, Fan J H, Yang R S 2010 Sci. China Phys. Mech. Astron. 53 1162
[12] Xie G Z, Zhang Y H, Fan J H 1993 Astron. Astrophys. 278 6
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[16] [17] Zhang X, Xie G Z, Zhao G, Ma L, Yi J D, Bai J M 2001 Acta Phys. Sin.50 353(in Chinese) [张 雄、谢光中、赵 刚、马 力、伊继东、白金明 2001 50 354]
[18] West D 2000 Computer Operations Research 27 1131
[19] [20] [21] Wang J C, Guo Z G 2001 Logistic Regression Model: Method and Application (Beijing: Higher Education Press) p8(in Chinese) [王济川、郭志刚 2001 Logistic回归模型:方法与应用(北京:高等教育出版社) 第8页]
[22] [23] Donato D, Ghisellini G, Tagliaferri G, Fossati G 2001 Astron. Astrophys. 375 739
[24] Tang J, Zhang X 2010 Acta Phys. Sin. 59 7516(in Chinese) [唐 洁、张 雄 2010 59 7516]
[25] [26] [27] Cao X W, Jiang D R 1999 Mon. Not. R. Astron. Soc. 307 802
[28] Fossati G, Maraschi L, Celotti A, Comastri A, Ghisellini G 1998 Mon. Not. R. Astron. Soc. 299 433
[29] [30] Sambruna R M 1997 Astrophys. J. 487 536
[31] [32] [33] Li W H, Yuan R 2009 Acta Phys. Sin. 58 6671(in Chinese) [李为虎、袁 蓉 2009 58 6671]
[34] Bao Y Y, Chen L E, Zhang X, Peng Z Y, Li H Z 2010 Acta Phys. Sin.59 3618(in Chinese) [鲍玉英、陈洛恩、张 雄、彭朝阳、李怀珍 2010 59 3618]
[35] [36] [37] Liu Y, Zhang X, Zheng Y G, Wang X M, Bao Y Y 2007 Acta Phys. Sin.56 5558(in Chinese) [刘 云、张 雄、郑永刚、王孝民、鲍玉英 2007 56 5558]
[38] Yuan Y H, Fan J H, Huang Y 2008 Chin. Phys. B 17 1526
[39] -
[1] Urry C M, Padovani P 1995 Pub. Astron. Soc. Pacif. 107 803
[2] Angel J R, Stockman H S 1980 Ann. Rev. Astron. Astrophys. 18 321
[3] [4] Ghisellini G, Celotti A, Fossati G, Maraschi L, Comastri A 1998 Mon. Not. R. Astron. Soc. 301 451
[5] [6] Fan J H, Yuan Y H, Liu Y 2008 Pub. Astron. Soc. Jpn. 60 707
[7] [8] Fan J H 2003 Astrophys. J. 585 L23
[9] [10] [11] Yang J H, Fan J H, Yang R S 2010 Sci. China Phys. Mech. Astron. 53 1162
[12] Xie G Z, Zhang Y H, Fan J H 1993 Astron. Astrophys. 278 6
[13] [14] [15] Sambruna R M, Maraschi L, Urry C M 1996 Astrophys. J. 463 444
[16] [17] Zhang X, Xie G Z, Zhao G, Ma L, Yi J D, Bai J M 2001 Acta Phys. Sin.50 353(in Chinese) [张 雄、谢光中、赵 刚、马 力、伊继东、白金明 2001 50 354]
[18] West D 2000 Computer Operations Research 27 1131
[19] [20] [21] Wang J C, Guo Z G 2001 Logistic Regression Model: Method and Application (Beijing: Higher Education Press) p8(in Chinese) [王济川、郭志刚 2001 Logistic回归模型:方法与应用(北京:高等教育出版社) 第8页]
[22] [23] Donato D, Ghisellini G, Tagliaferri G, Fossati G 2001 Astron. Astrophys. 375 739
[24] Tang J, Zhang X 2010 Acta Phys. Sin. 59 7516(in Chinese) [唐 洁、张 雄 2010 59 7516]
[25] [26] [27] Cao X W, Jiang D R 1999 Mon. Not. R. Astron. Soc. 307 802
[28] Fossati G, Maraschi L, Celotti A, Comastri A, Ghisellini G 1998 Mon. Not. R. Astron. Soc. 299 433
[29] [30] Sambruna R M 1997 Astrophys. J. 487 536
[31] [32] [33] Li W H, Yuan R 2009 Acta Phys. Sin. 58 6671(in Chinese) [李为虎、袁 蓉 2009 58 6671]
[34] Bao Y Y, Chen L E, Zhang X, Peng Z Y, Li H Z 2010 Acta Phys. Sin.59 3618(in Chinese) [鲍玉英、陈洛恩、张 雄、彭朝阳、李怀珍 2010 59 3618]
[35] [36] [37] Liu Y, Zhang X, Zheng Y G, Wang X M, Bao Y Y 2007 Acta Phys. Sin.56 5558(in Chinese) [刘 云、张 雄、郑永刚、王孝民、鲍玉英 2007 56 5558]
[38] Yuan Y H, Fan J H, Huang Y 2008 Chin. Phys. B 17 1526
[39]
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