Amplification and variability of the AGN X-ray emission due to microlensing

Details Amplification and variability of the AGN X-ray emission due to microlensing Amplification and variability of the AGN X-ray emission due to microlensing

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005an....326..981p&link_type=abstract

Astronomische Nachrichten, Vol.327, Issue 10, p.981-984

Mathematics

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Scientific paper

We consider the contribution of microlensing to the AGN Fe Kα line and X-ray continuum amplification and variation. To investigate the variability of the line and X-ray continuum, we studied the effects of microlensing on quasar X-ray spectra produced by crossing of a microlensing pattern across a standard relativistic accretion disk. To describe the disk emission we used a ray tracing method considering both metrics, Schwarzschild and Kerr. We found that the Fe Kα and continuum may experience significant amplification by a microlensing event (even for microlenses of very small mass). Also, we investigate a contribution of microlensing to the X-ray variability of high-redshifted QSOs, finding that cosmologically distributed deflector may contribute significantly to the X-ray variability of high-redshifted QSOs (z > 2).

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