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DOI10.1093/mnras/stu2613
Differential interferometry of QSO broad-line regions - I. Improving the reverberation mapping model fits and black hole mass estimates
Rakshit, Suvendu1; Petrov, Romain G.1; Meilland, Anthony1; Honig, Sebastian F.2
通讯作者Rakshit, Suvendu
来源期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
EISSN1365-2966
出版年2015
卷号447期号:3
英文摘要

Reverberation mapping (RM) estimates the size and kinematics of broad-line regions (BLR) in quasars and type I AGNs. It yields size-luminosity relation to make QSOs standard cosmological candles, and mass-luminosity relation to study the evolution of black holes and galaxies. The accuracy of these relations is limited by the unknown geometry of the BLR clouds distribution and velocities. We analyse the independent BLR structure constraints given by super-resolving differential interferometry. We developed a three-dimensional BLR model to compute all differential interferometry and RM signals. We extrapolate realistic noises from our successful observations of the QSO 3C 273 with AMBER on the VLTI. These signals and noises quantify the differential interferometry capacity to discriminate and measure BLR parameters including angular size, thickness, spatial distribution of clouds, local-to-global and radial-to-rotation velocity ratios, and finally central black hole mass and BLR distance. A Markov Chain Monte Carlo model-fit, of data simulated for various VLTI instruments, gives mass accuracies between 0.06 and 0.13 dex, to be compared to 0.44 dex for RM mass-luminosity fits. We evaluate the number of QSOs accessible to observe with current (AMBER), upcoming (GRAVITY) and possible (OASIS with new generation fringe trackers) VLTI instruments. With available technology, the VLTI could resolve more than 60 BLRs, with a luminosity range larger than four decades, sufficient for a good calibration of RM mass-luminosity laws, from an analysis of the variation of BLR parameters with luminosity.


英文关键词methods: statistical techniques: interferometric techniques: spectroscopic galaxies: nuclei
类型Article
语种英语
国家France ; Denmark
收录类别SCI-E
WOS记录号WOS:000350273200027
WOS关键词ACTIVE GALACTIC NUCLEI ; AGN MONITORING PROJECT ; RADIUS-LUMINOSITY RELATIONSHIP ; HIGH-RESOLUTION SPECTROSCOPY ; HOST-GALAXY STARLIGHT ; VELOCITY-DELAY MAPS ; STELLAR INTERFEROMETRY ; SEYFERT-GALAXIES ; DYNAMICAL MODELS ; DUSTY TORUS
WOS类目Astronomy & Astrophysics
WOS研究方向Astronomy & Astrophysics
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/189266
作者单位1.Univ Nice Sophia Antipolis, CNRS, Observ Cote Azur, Lab Lagrange,UMR 7293, F-06304 Nice 4, France;
2.Univ Copenhagen, Dark Cosmol Ctr, DK-2100 Copenhagen, Denmark
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Rakshit, Suvendu,Petrov, Romain G.,Meilland, Anthony,et al. Differential interferometry of QSO broad-line regions - I. Improving the reverberation mapping model fits and black hole mass estimates[J],2015,447(3).
APA Rakshit, Suvendu,Petrov, Romain G.,Meilland, Anthony,&Honig, Sebastian F..(2015).Differential interferometry of QSO broad-line regions - I. Improving the reverberation mapping model fits and black hole mass estimates.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,447(3).
MLA Rakshit, Suvendu,et al."Differential interferometry of QSO broad-line regions - I. Improving the reverberation mapping model fits and black hole mass estimates".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 447.3(2015).
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