Search Results - "Maithil, Jaya"
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1
Dissecting galaxies: separating star formation, shock excitation and AGN activity in the central region of NGC 613
Published in Monthly notices of the Royal Astronomical Society (01-10-2017)“…Abstract The most rapidly evolving regions of galaxies often display complex optical spectra with emission lines excited by massive stars, shocks and accretion…”
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Journal Article -
2
Shedding New Light on Weak Emission-line Quasars in the C iv–Hβ Parameter Space
Published in The Astrophysical journal (01-06-2023)“…Abstract Weak emission-line quasars (WLQs) are a subset of type 1 quasars that exhibit extremely weak Ly α + N v λ 1240 and/or C iv λ 1549 emission lines. We…”
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Journal Article -
3
Monitoring AGNs with Hβ Asymmetry. IV. First Reverberation Mapping Results of 14 Active Galactic Nuclei
Published in The Astrophysical journal. Supplement series (01-06-2024)“…Abstract We report first-time reverberation-mapping results for 14 active galactic nuclei (AGNs) from the ongoing Monitoring AGNs with H β Asymmetry campaign…”
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Journal Article -
4
A Multiwavelength Investigation of Quasar Orientation, Black Hole Mass, and Accretion Rate: Putting Quasars in Perspective
Published 01-01-2022“…The aim of this thesis is to provide a multiwavelength perspective of the fundamental properties of quasars. It improves the statistical measure of quasar…”
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Dissertation -
5
Monitoring AGNs with Hβ Asymmetry. I. First Results: Velocity-resolved Reverberation Mapping
Published in The Astrophysical journal (20-12-2018)“…We have started a long-term reverberation mapping (RM) project using the Wyoming Infrared Observatory 2.3 m telescope titled "Monitoring AGNs with Hβ…”
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Journal Article -
6
X-ray properties of reverberation-mapped AGNs with super-Eddington accreting massive black holes
Published in Monthly notices of the Royal Astronomical Society (23-01-2024)“…ABSTRACT X-ray properties of active galactic nuclei (AGNs) depend on their underlying physical parameters, particularly the accretion rate. We identified eight…”
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Journal Article -
7
Systematically smaller single-epoch quasar black hole masses using a radius–luminosity relationship corrected for spectral bias
Published in Monthly notices of the Royal Astronomical Society (15-07-2022)“…ABSTRACT Determining black hole masses and accretion rates with better accuracy and precision is crucial for understanding quasars as a population. These are…”
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Journal Article -
8
Monitoring AGNs with Hβ Asymmetry. II. Reverberation Mapping of Three Seyfert Galaxies Historically Displaying Hβ Profiles with Changing Asymmetry: Mrk 79, NGC 3227, and Mrk 841
Published in The Astrophysical journal (01-12-2020)“…We report the results of reverberation mapping of three bright Seyfert galaxies, Mrk 79, NGC 3227, and Mrk 841, from a campaign conducted from 2016 December to…”
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Journal Article -
9
Monitoring AGNs with Hβ Asymmetry. III. Long-term Reverberation Mapping Results of 15 Palomar–Green Quasars
Published in The Astrophysical journal. Supplement series (01-09-2022)“…Abstract In this third paper of the series reporting on the reverberation mapping campaign of active galactic nuclei with asymmetric H β emission-line…”
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Journal Article -
10
Investigating Orientation Effects Considering Angular Resolution for a Sample of Radio-loud Quasars Using VLA Observations
Published in The Astrophysical journal (01-12-2020)“…Radio core dominance measurements, an indicator of jet orientation, sometimes rely on core flux density measurements from large-area surveys like Faint Images…”
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Journal Article -
11
How similar are the properties of quasars with nearly identical ultraviolet spectra?
Published in Monthly notices of the Royal Astronomical Society (01-01-2017)“…The spectrum of a quasar contains important information about its properties. Thus, it can be expected that two quasars with similar spectra will have similar…”
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Journal Article -
12
Broad-line region in NGC 4151 monitored by two decades of reverberation mapping campaigns – I. Evolution of structure and kinematics
Published in Monthly notices of the Royal Astronomical Society (07-02-2023)“…ABSTRACT We report the results of long-term reverberation mapping campaigns of the nearby active galactic nuclei (AGNs) NGC 4151, spanning from 1994 to 2022,…”
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Journal Article -
13
X-ray properties of reverberation-mapped AGNs with super-Eddington accreting massive black holes
Published 15-01-2024“…The X-ray properties of Active Galactic Nuclei (AGNs) depend on their underlying physical parameters, particularly the accretion rate. We identified eight…”
Get full text
Journal Article -
14
Systematically smaller single-epoch quasar black hole masses using a radius-luminosity relationship corrected for spectral bias
Published 23-06-2022“…Determining black hole masses and accretion rates with better accuracy and precision is crucial for understanding quasars as a population. These are…”
Get full text
Journal Article -
15
Investigating orientation effects considering angular resolution for a sample of radio-loud quasars using VLA observations
Published 16-10-2020“…Radio core dominance measurements, an indicator of jet orientation, sometimes rely on core flux density measurements from large-area surveys like Faint Images…”
Get full text
Journal Article -
16
Monitoring AGNs with H$\beta$ Asymmetry. IV. First Reverberation Mapping Results of 14 AGNs
Published 10-04-2024“…We report first-time reverberation mapping results for 14 AGNs from the ongoing Monitoring AGNs with H$\beta$ Asymmetry campaign (MAHA). These results utilize…”
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Journal Article -
17
Shedding New Light on Weak Emission-Line Quasars in the C$_{\rm IV}$-H$\beta$ Parameter Space
Published 10-04-2023“…Weak emission-line quasars (WLQs) are a subset of Type 1 quasars that exhibit extremely weak Ly$\alpha +$N V $\lambda$1240 and/or C IV $\lambda$1549 emission…”
Get full text
Journal Article -
18
Broad-line region in NGC 4151 monitored by two decades of reverberation mapping campaigns. I. Evolution of structure and kinematics
Published 15-01-2023“…We report the results of long-term reverberation mapping (RM) campaigns of the nearby active galactic nuclei (AGN) NGC 4151, spanning from 1994 to 2022, based…”
Get full text
Journal Article -
19
Monitoring AGNs with H$\beta$ Asymmetry. III. Long-term Reverberation Mapping Results of 15 Palomar-Green Quasars
Published 01-07-2022“…In this third paper of the series reporting on the reverberation mapping (RM) campaign of active galactic nuclei with asymmetric H$\beta$ emission-line…”
Get full text
Journal Article -
20
Monitoring AGNs with H\beta\ Asymmetry. II. Reverberation Mapping of Three Seyfert Galaxies Historically Displaying H\beta\ Profiles with Changing Asymmetry: Mrk 79, NGC 3227, and Mrk 841
Published 11-11-2020“…We report the results of reverberation mapping three bright Seyfert galaxies, Mrk 79, NGC 3227, and Mrk 841, from a campaign conducted from December 2016 to…”
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Journal Article