Possible mechanism of quasi-periodic oscillation of x-ray and TeV emissions for Mkn 501
Yuan Yu-Hai (袁聿海)a, Yang Jiang-He (杨江和)b
a Center for Astrophysics, Guangzhou University, Guangzhou 510400, China; b Department of Electronics and Physics,Hunan University of Arts and Science, Changde 415000, China,
Abstract We propose that the emissions of an advection-dominated accretion flows (ADAF) disc are the seed photons up-scattered to x-ray and TeV $\gamma$-rays in Mkn 501 and the instability of an ADAF disc may explain the 23-day quasi-periodic oscillation period observed in the x-rays and TeV lightcurves of Mkn 501.In this model, the ADAF emissions of optical and x-rays go into the jet and are up-scattered to high energies by relativistic electrons. In this process, the instability occurring in ADAF results in the quasi-periodic variation in the seed photons and therefore causes the variation in high energy x- and $\gamma$-rays.
Received: 11 August 2004
Revised: 18 March 2005
Accepted manuscript online:
PACS:
98.54.Cm
(Active and peculiar galaxies and related systems (including BL Lacertae objects, blazars, Seyfert galaxies, Markarian galaxies, and active galactic nuclei))
Fund: Project supported partially by the National 973 project (Grant No NKBRSF G19990754), the National Science Fund for Distinguished Young Scholars (Grant No 10125313), and the Fund for Top Scholars of Guangdong Province (Grant No Q02114).
Cite this article:
Yuan Yu-Hai (袁聿海), Yang Jiang-He (杨江和) Possible mechanism of quasi-periodic oscillation of x-ray and TeV emissions for Mkn 501 2005 Chinese Physics 14 1683
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