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A ∼4.6 h quasi-periodic oscillation in the BL Lacertae PKS 2155-304?

Show simple item record Lachowicz, P. Gupta, A. C. Gaur, H. Wiita, P. J. 2009-10-30T10:00:54Z 2009-10-30T10:00:54Z 2009
dc.description.abstract We report a possible detection of an ̴4.6-h quasi-periodic oscillation (QPO) in the 0.3–10 keV emission of the high-energy peaked blazar PKS 2155−304 from a 64 ks observation by the XMM-Newton EPIC/pn detector. We identify a total modulation of ̴5% in the light curve and confirm that nominal period by periodogram, structure function, and wavelet analyses. The limited light curve duration allows the capture of only 3.8 cycles of this oscillation and thus precludes a very strong claim for this QPO, despite a nominally high (≥3σ) statistical significance. We briefly discuss models capable of producing an X-ray QPO of such a period in a blazar. en_US
dc.language.iso en en_US
dc.relation.ispartofseries aa506-L17
dc.subject Galaxies, Active- BL Lacertae Objects, PK2155-304-X-rays en_US
dc.title A ∼4.6 h quasi-periodic oscillation in the BL Lacertae PKS 2155-304? en_US
dc.type Article en_US

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