Evidence for quasi-periodic oscillations in the optical polarization of the blazar PKS 2155-304

被引：10

作者：

Pekeur, N. W. ^{[1
]}

Taylor, A. R. ^{[1
,2
]}

Potter, S. B. ^{[3
]}

Kraan-Korteweg, R. C. ^{[1
]}

机构：

[1] Univ Cape Town, Dept Astron, Astrophys Cosmol & Grav Ctr, Private Bag X3, ZA-7701 Rondebosch, South Africa

[2] Univ Western Cape, Dept Phys & Astron, Modderdam Rd,Private Bag X17, ZA-7530 Bellville, South Africa

[3] South African Astron Observ, POB 9, ZA-7935 Cape Town, South Africa

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2016年 / 462卷 / 01期

基金：

新加坡国家研究基金会;

关键词：

galaxies:; active; RELATIVISTIC JETS; VARIABILITY; BEHAVIOR; NOISE;

D O I：

10.1093/mnrasl/slw129

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Evidence for the presence of quasi-periodic oscillations (QPOs) in the optical polarization of the blazar PKS 2155-304, during a period of enhanced gamma-ray brightness, is presented. The periodogram of the polarized flux revealed the existence of a prominent peak at T similar to 13 min, detected at > 99.7 per cent significance, and T similar to 30 min, which was nominally significant at > 99 per cent. This is the first evidence of QPOs in the polarization of an active galactic nucleus, potentially opening up a new avenue of studying this phenomenon.

引用

页码：L80 / L83

页数：4

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