The variability mechanism of Seyfert galaxy NGC 4151

被引:4
|
作者
Fan, JH [1 ]
Su, CY
Lin, RG
机构
[1] Guangzhou Univ, Ctr Astrophys, Guangzhou 510405, Peoples R China
[2] Chinese Acad Sci, Natl Astron Observ, Beijing, Peoples R China
[3] Guangdong Ind Univ, Dept Phys, Guangzhou 510643, Peoples R China
关键词
accretion; accretion disks; galaxies : individual (NGC 415 1); galaxies : Seyfert; instabilities;
D O I
10.1093/pasj/54.2.175
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Based on compilation by Fan and Su (1998, AAA 70.158.417), the variability property is discussed for the Seyfert galaxy NGC 415 1 using the structure function, V(tau)(1/2) similar to tau(k). The derived k is 0.35 +/- 0.03, suggesting that the disk-instability favors the star-burst model as an explanation for the mechanism of the variability in this source.
引用
收藏
页码:175 / 178
页数:4
相关论文
共 50 条
  • [21] Simultaneous UBVRI light curves of the Seyfert galaxy NGC 4151 during the extraordinary brightening from 1989 to 1996
    Merkulova, NI
    Metik, LP
    Pronik, II
    ASTRONOMICAL JOURNAL, 1999, 117 (05): : 2177 - 2184
  • [22] Origin of the "disk-line" feature in the X-ray energy spectrum of a Seyfert galaxy, NGC 4151
    Takahashi, K
    Inoue, H
    Dotani, T
    PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 2002, 54 (03) : 373 - 386
  • [23] Space telescope imaging spectrograph echelle observations of the Seyfert galaxy NGC 4151: Physical conditions in the ultraviolet absorbers
    Kraemer, SB
    Crenshaw, DM
    Hutchings, JB
    George, IM
    Danks, AC
    Gull, TR
    Kaiser, ME
    Nelson, CH
    Weistrop, D
    Vieira, GL
    ASTROPHYSICAL JOURNAL, 2001, 551 (02): : 671 - 686
  • [24] The nuclear regions of the Seyfert galaxy NGC 4151: Parsec-scale HI absorption and a remarkable radio jet
    Mundell, CG
    Wrobel, JM
    Pedlar, A
    Gallimore, JF
    ASTROPHYSICAL JOURNAL, 2003, 583 (01): : 192 - 204
  • [25] Variability of the iron K emission line in the Seyfert 1 galaxy NGC 3516
    Nandra, K
    Mushotzky, RF
    Yaqoob, T
    George, IM
    Turner, TJ
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1997, 284 (02) : L7 - L10
  • [26] WARM ABSORBERS AND OUTFLOWS IN THE SEYFERT-1 GALAXY NGC 4051
    King, Ashley L.
    Miller, Jon M.
    Raymond, John
    ASTROPHYSICAL JOURNAL, 2012, 746 (01):
  • [27] Long-term variability in the optical spectrum of the Seyfert galaxy NGC 2992
    Trippe, M. L.
    Crenshaw, D. M.
    Deo, R.
    Dietrich, M.
    ASTRONOMICAL JOURNAL, 2008, 135 (06): : 2048 - 2054
  • [28] X-ray variability characteristics of the Seyfert 1 galaxy NGC 3783
    Markowitz, A
    ASTROPHYSICAL JOURNAL, 2005, 635 (01): : 180 - 197
  • [29] The X-ray spectrum and variability of the Seyfert 2 galaxy NGC 7172
    Guainazzi, M
    Matt, G
    Antonelli, LA
    Fiore, F
    Piro, L
    Ueno, S
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1998, 298 (03) : 824 - 830
  • [30] A variability study of the Seyfert 2 galaxy NGC 6300 with XMM-Newton
    Awaki, H
    Murakami, H
    Leighly, KM
    Matsumoto, C
    Hayashida, K
    Grupe, D
    ASTROPHYSICAL JOURNAL, 2005, 632 (02): : 793 - 798