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

Reverberation mapping estimates the size and kinematics of broad line regions(BLR) in Quasars and type I AGNs. It yields size-luminosity relation, to makeQSOs standard cosmological candles, and mass-luminosity relation to study theevolution of black holes and galaxies. The accuracy of these relations islimited by the unknown geometry of the BLR clouds distribution and velocities.We analyze the independent BLR structure constraints given by super-resolvingdifferential interferometry. We developed a three-dimensional BLR model tocompute all differential interferometry and reverberation mapping signals. Weextrapolate realistic noises from our successful observations of the QSO 3C273with AMBER on the VLTI. These signals and noises quantify the differentialinterferometry capacity to discriminate and measure BLR parameters includingangular size, thickness, spatial distribution of clouds, local-to-global andradial-to-rotation velocity ratios, and finally central black hole mass and BLRdistance. A Markov Chain Monte Carlo model-fit, of data simulated for variousVLTI instruments, gives mass accuracies between 0.06 and 0.13 dex, to becompared to 0.44 dex for reverberation mapping mass-luminosity fits. Weevaluate the number of QSOs accessible to measures with current (AMBER),upcoming (GRAVITY) and possible (OASIS with new generation fringe trackers)VLTI instruments. With available technology, the VLTI could resolve more than60 BLRs, with a luminosity range larger than four decades, sufficient for agood calibration of RM mass-luminosity laws, from an analysis of the variationof BLR parameters with luminosity.

Differential interferometry of QSO broad line regions I: improving the reverberation mapping model fits and black hole mass estimates