Search for X-ray quasi-periodic oscillations with weighted wavelet z-transform technique

DOI

10.2991/icmeit-16.2016.70How to use a DOI?

Keywords

WWZ, periodicity, wavelet, PKS 0537-441.

Abstract

The searching for the quasi-periodic oscillations (QPOs) of some Active galactic nuclei (AGNs) plays an important role in understanding the physical mechanism and theoretical model of AGNs. The AGN PKS 0537-441 was monitored in the X-ray 15-50 keV bands in 2005-2016 by the Swift/BAT instruments, which provide an opportunity to identify the QPOs in X-ray band. By mean of the weighted wavelet z-transform technique (WWZ), QPOs of 66, 198 and 398 day are identified. Moreover, the instabilities in the accretion flow might be responsible the QPOs in the X-ray band.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Xiaopan Li
PY  - 2016/08
DA  - 2016/08
TI  - Search for X-ray quasi-periodic oscillations with weighted wavelet z-transform technique
BT  - Proceedings of the 2016 International Conference on Mechatronics Engineering and Information Technology
PB  - Atlantis Press
SP  - 362
EP  - 365
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmeit-16.2016.70
DO  - 10.2991/icmeit-16.2016.70
ID  - Li2016/08
ER  -