Results 21 to 30 of about 1,338,515 (290)

Fast and Flexible Inference Framework for Continuum Reverberation Mapping Using Simulation-based Inference with Deep Learning [PDF]

The Astrophysical Journal
Continuum reverberation mapping (CRM) of active galactic nuclei (AGN) monitors multiwavelength variability signatures to constrain accretion disk structure and supermassive black hole (SMBH) properties. The upcoming Vera Rubin Observatory’s Legacy Survey
Jennifer I-Hsiu Li, Sean D. Johnson, Camille Avestruz, Sreevani Jarugula, Yue Shen, Elise Kesler, Zhuoqi (Will) Liu, Nishant Mishra   +7 more
doaj   +2 more sources

Spectrophotometric Reverberation Mapping of Intermediate-mass Black Hole NGC 4395 [PDF]

The Astrophysical Journal
Understanding the origins of massive black hole seeds and their coevolution with their host galaxy requires studying intermediate-mass black holes (IMBHs) and estimating their mass.
Shivangi Pandey, Suvendu Rakshit, Krishan Chand, C. S. Stalin, Hojin Cho, Jong-Hak Woo, Priyanka Jalan, Amit Kumar Mandal, Amitesh Omar, Jincen Jose, Archana Gupta   +10 more
doaj   +2 more sources

Dust reverberation mapping of Z229–15 [PDF]

Monthly Notices of the Royal Astronomical Society, 2020
ABSTRACTWe report results of the dust reverberation mapping (DRM) on the Seyfert 1 galaxy Z229–15 at z = 0.0273. Quasi-simultaneous photometric observations for a total of 48 epochs were acquired during the period 2017 July to 2018 December in B, V, J, H and Ks bands.
Amit Kumar Mandal, Suvendu Rakshit, C S Stalin, Dominika Wylezalek, Markus Kissler Patig, Ram Sagar, Blesson Mathew, S Muneer, Indrani Pal   +8 more
openaire   +2 more sources

Composite reverberation mapping [PDF]

Monthly Notices of the Royal Astronomical Society, 2012
11 pages, 11 figures, accepted for publication in ...
Fine, S., Shanks, T., Croom, S. M., Green, P., Kelly, B. C., Berger, E., Chornock, R., Burgett, W. S., Magnier, E. A., Price, P. A.   +9 more
openaire   +5 more sources

Hierarchical reverberation mapping [PDF]

Monthly Notices of the Royal Astronomical Society: Letters, 2014
Abstract Reverberation mapping (RM) is an important technique in studies of active galactic nuclei (AGN). The key idea of RM is to measure the time lag τ between variations in the continuum emission from the accretion disc and subsequent response of the broad-line region (BLR).
Brewer, Brendon J., Elliott, Tom M.
openaire   +2 more sources

Stacked reverberation mapping [PDF]

Monthly Notices of the Royal Astronomical Society: Letters, 2013
Abstract Over the past 20 years reverberation mapping has proved one of the most successful techniques for studying the local (<1 pc) environment of supermassive black holes that drive active galactic nuclei. Key successes of reverberation mapping have been direct black hole mass estimates, the radius–luminosity relation for the ...
Fine, Stephen, Shanks, T., Green, P., Kelly, B., Croom, S. M., Webster, R. L., Berger, E., Chornock, R., Burgett, W. S., Chambers, K. C., Kaiser, N., Price, P. A.   +11 more
openaire   +3 more sources

X-Ray/UVOIR Frequency-resolved Time Lag Analysis of Mrk 335 Reveals Accretion Disk Reprocessing

The Astrophysical Journal, 2023
UV and optical continuum reverberation mapping is a powerful tool for probing the accretion disk and inner broad-line region. However, recent reverberation mapping campaigns in the X-ray, UV, and optical have found lags consistently longer than those ...
Collin Lewin, Erin Kara, Edward M. Cackett, Dan Wilkins, Christos Panagiotou, Javier A. García, Jonathan Gelbord   +6 more
doaj   +1 more source

On reverberation mapping lag uncertainties [PDF]

Monthly Notices of the Royal Astronomical Society, 2019
ABSTRACTWe broadly explore the effects of systematic errors on reverberation mapping lag uncertainty estimates from javelin and the interpolated cross-correlation function (ICCF) method. We focus on simulated light curves from random realizations of the light curves of five intensively monitored AGNs.
Z Yu, C S Kochanek, B M Peterson, Y Zu, W N Brandt, E M Cackett, M M Fausnaugh, I M McHardy   +7 more
openaire   +2 more sources

Photometric reverberation mapping of 3C120 [PDF]

Proceedings of Nuclei of Seyfert galaxies and QSOs - Central engine & conditions of star formation — PoS(Seyfert 2012), 2012
We present the results of a five month monitoring campaign of the local active galactic nuclei (AGN) 3C120. Observations with a median sampling of two days were conducted with the robotic 15cm telescope VYSOS-6 located near Cerro Armazones in Chile. Broad band (B,V) and narrow band (NB) filters were used in order to measure fluxes of the AGN and the ...
Pozo Nunez, F, Ramolla, M, Westhues, C, Bruckmann, C, Haas, M, Chini, R, Steenbrugge, K, Murphy, M   +7 more
openaire   +4 more sources

Spectroastrometric Reverberation Mapping of Broad-line Regions

The Astrophysical Journal, 2023
Spectroastrometry measures source astrometry as a function of wavelength/velocity. Reverberations of spectroastrometric signals naturally arise in broad-line regions (BLRs) of active galactic nuclei (AGNs) as a result of the continuum variations that ...
Yan-Rong Li, Jian-Min Wang
doaj   +1 more source