Possible Lognormal Distribution of Fermi-LAT Data of OJ 287

被引:0
作者
Deng, G. G. [1 ]
Liu, Y. [1 ]
Fan, J. H. [1 ]
Wang, H. G. [1 ]
机构
[1] Guangzhou Univ, Sch Phys & Elect Engn, Guangzhou 510006, Guangdong, Peoples R China
基金
中国国家自然科学基金;
关键词
Galaxies; blazar; gamma-ray; Fermi-LAT; data analysis; BL LACERTAE OBJECTS;
D O I
10.1007/s12036-014-9205-0
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
OJ 287 is a BL Lac object at redshift z = 0.306 that has shown double-peaked bursts at regular intervals of 12 yr during the last 40 yr according to previous research. Some of the AGN gamma ray power density shows a white noise process, while some others shows a red noise process. Some AGN flux presents normal or log-normal distribution. The two processes have an intrinsic relationship with centre black hole emission mechanism. We present the results of the analysis of the Fermi-LAT data. We review some problems concerning the random process.
引用
收藏
页码:257 / 260
页数:4
相关论文
共 8 条
  • [1] Optical periodicity analysis for radio selected BL Lacertae objects (RBLs)
    Fan, JH
    Lin, RG
    Xie, GZ
    Zhang, L
    Mei, DC
    Su, CY
    Peng, ZM
    [J]. ASTRONOMY & ASTROPHYSICS, 2002, 381 (01) : 1 - 5
  • [2] Log-normal distributions in gamma-ray burst time histories
    Li, H
    Fenimore, EE
    [J]. ASTROPHYSICAL JOURNAL, 1996, 469 (02) : L115 - L118
  • [3] Li H., 2004, APJ, V612, pL21
  • [4] Scargle J. D., 1981, APJ, V45, P1
  • [5] Scargle J. D., APJ, V343, P874
  • [6] STUDIES IN ASTRONOMICAL TIME-SERIES ANALYSIS .4. MODELING CHAOTIC AND RANDOM-PROCESSES WITH LINEAR FILTERS
    SCARGLE, JD
    [J]. ASTROPHYSICAL JOURNAL, 1990, 359 (02) : 469 - 482
  • [7] ULRICH MH, 1995, ASTRON ASTROPHYS, V293, P641
  • [8] Supermassive black holes in BL Lacertae objects: Estimated masses and their relation to nuclear luminosity
    Xie, GZ
    Liang, EW
    Xie, ZH
    Dai, BZ
    [J]. ASTRONOMICAL JOURNAL, 2002, 123 (05) : 2352 - 2357