Reconstruction of the microlensing light curves of the Einstein Cross, QSO2237+0305: possible evidence of an accretion disk with a central hole

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dc.creatorLee, Dong-Wook
dc.creatorSurdej, J.
dc.creatorMoreau, O.
dc.creatorLibbrecht, C.
dc.creatorClaeskens, J. -F.
dc.date2005-03-01
dc.date2005-03-15
dc.date.accessioned2026-07-07T02:17:07Z
dc.date.available2026-07-07T02:17:07Z
dc.descriptionRecent OGLE (Optical Gravitational Lensing Experiment) and GLITP (Gravitational Lens International Time Project) monitoring data for QSO 2237+0305 (Huchra et al.) have been analyzed through a newly optimized N-body microlensing analysis method, the Local HAE Caustic Modeling (LOHCAM). This method simultaneously solves for the size of the source and N-body HAE (High Amplification Events) caustic shapes in the source plane and determines those sizes only as a function of the projected transverse velocity of the source. By applying this method to the light curves of the A & C lensed components in the Einstein Cross, these data are accurately reconstructed for the first time. From these modeling studies, we report several interesting results: the minimum number of microlenses required for possible caustic models, the possible evidence of an accretion disk with a central hole at the heart of the quasar, the size of the UV-continuum source, the masses of the microlenses being directly responsible for the observed HAEs, the estimated mass range of a super massive black hole (SMBH) in QSO 2237+0305 and finally some clues for the direction of the source motion in the sky.
dc.description6 pages, 3 figures, Originally submitted to Nature, microlensing workshop at Hawaii, submitted to A&A, some changes especially in the Result vlaues according to new estimation for the transverse velocity
dc.identifierhttps://arxiv.org/abs/astro-ph/0503018
dc.identifierhttp://arxiv.org/abs/astro-ph/0503018
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/9053
dc.subjectAstrophysics
dc.titleReconstruction of the microlensing light curves of the Einstein Cross, QSO2237+0305: possible evidence of an accretion disk with a central hole
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