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
  • [31] Variability of Fe II emission features in the Seyfert 1 galaxy NGC 5548
    Vestergaard, M
    Peterson, BM
    ASTROPHYSICAL JOURNAL, 2005, 625 (02): : 688 - 698
  • [32] Free-free absorption in the Seyfert nucleus of NGC 4151
    Pedlar, A
    Fernandez, B
    Hamilton, NG
    Redman, MP
    Dewdney, PE
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1998, 300 (04) : 1071 - 1076
  • [33] Gas dynamics in the barred Seyfert galaxy NGC 4151 - II. High-resolution H I study
    Mundell, CG
    Pedlar, A
    Shone, DL
    Robinson, A
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1999, 304 (03) : 481 - 494
  • [34] A search for ultrarapid microavailability in the Seyfert galaxy NGC 7469 with the Hubble Space Telescope
    Welsh, WF
    Peterson, BM
    Koratkar, AP
    Korista, KT
    ASTROPHYSICAL JOURNAL, 1998, 509 (01): : 118 - 131
  • [35] ENERGY-DEPENDENT TIME LAGS IN THE SEYFERT 1 GALAXY NGC 4593
    Sriram, K.
    Agrawal, V. K.
    Rao, A. R.
    ASTROPHYSICAL JOURNAL, 2009, 700 (02): : 1042 - 1046
  • [36] Possible evidence for a truncated thin disk in Seyfert 1 galaxy NGC 4593
    Lu, YJ
    Wang, TG
    ASTROPHYSICAL JOURNAL, 2000, 537 (02): : L103 - L106
  • [37] Photometric variability and astrometric stability of the radio continuum nucleus in the Seyfert galaxy NGC 5548
    Wrobel, JM
    ASTROPHYSICAL JOURNAL, 2000, 531 (02): : 716 - 726
  • [38] Variability of the coronal line region in NGC 4151
    Landt, Hermine
    Ward, Martin J.
    Steenbrugge, Katrien C.
    Ferland, Gary J.
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2015, 449 (04) : 3795 - 3805
  • [39] The biconical outflow in the Seyfert galaxy NGC 2992
    Veilleux, S
    Shopbell, PL
    Miller, ST
    ASTRONOMICAL JOURNAL, 2001, 121 (01): : 198 - 209
  • [40] Absorption and reddening in the Seyfert galaxy NGC 3227
    Crenshaw, DM
    Kraemer, SB
    Bruhweiler, FC
    Ruiz, JR
    ASTROPHYSICAL JOURNAL, 2001, 555 (02): : 633 - 640