English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The Chandra observations of several gravitationally lensed quasars showevidence for flux and spectral variability of the X-ray emission that isuncorrelated between images and is thought to result from the microlensing bystars in the lensing galaxy. We report here on the most detailed modeling ofsuch systems to date, including simulations of the emission of the Fe K-alphafluorescent radiation from the accretion disk with a general relativistic raytracing code, the use of realistic microlensing magnification maps derived frominverse ray shooting calculations, and the simulation of the line detectionbiases. We use lensing and black hole parameters appropriate for the quadruplylensed quasar RX J1131-1231, and compare the simulated results with theobservational results. The simulations cannot fully reproduce the distributionof the detected line energies indicating that some of the assumptionsunderlying the simulations are not correct, or that the simulations are missingsome important physics. We conclude by discussing several possibleexplanations.

The Effect of Microlensing On the Observed X-ray Energy Spectra of Gravitationally Lensed Quasars