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The Astrophysical Journal, ISSN 1538-4357, 10/2019, Volume 885, Issue 1, p. 47
Journal Article
Monthly Notices of the Royal Astronomical Society, ISSN 0035-8711, 12/2018, Volume 481, Issue 3, pp. 3563 - 3572
The physics behind the dramatic and unpredictable X-ray variability of active galactic nuclei (AGN) has eluded astronomers since it was discovered. We present... 
Galaxies: nuclei | Galaxies: active | BL Lacertae objects: general | X-rays: binaries | X-rays: galaxies | Galaxies: Seyfert | EXCESS | galaxies: Seyfert | SEARCH | BLACK-HOLE | MODEL | REFLECTION | EVOLUTION | ACTIVE GALACTIC NUCLEI | galaxies: active | ASTRONOMY & ASTROPHYSICS | GALAXIES | galaxies: nuclei | EMISSION | XMM-NEWTON
Journal Article
Monthly Notices of the Royal Astronomical Society, ISSN 0035-8711, 02/2019, Volume 482, Issue 4, pp. 5513 - 5523
The origin of the radio emission in radio-quiet (RQ) quasars is not established yet. Important hints can be provided by the spectral slope, and its relation to... 
Quasars: General | VARIABILITY | quasars: general | COMPLETE SAMPLE | ACTIVE GALACTIC NUCLEI | SEYFERT-GALAXIES | ASTRONOMY & ASTROPHYSICS | STAR-FORMATION | X-RAY-PROPERTIES | OPTICALLY SELECTED QUASARS | FREE-FREE ABSORPTION | CENTRAL ENGINES | SYNCHROTRON EMISSION | Physics - Astrophysics of Galaxies
Journal Article
The Astrophysical Journal, ISSN 0004-637X, 05/2002, Volume 570, Issue 1 I, pp. 165 - 170
Journal Article
ASTROPHYSICAL JOURNAL, ISSN 0004-637X, 07/2019, Volume 879, Issue 2, p. 102
NGC 4051 is one of the most variable and X-ray bright Seyfert galaxies. During 2009, NGC 4051 was caught at its lowest state ever observed by XMM-Newton. The... 
galaxies: Seyfert | NGC-4051 | ACTIVE GALACTIC NUCLEUS | DISK WINDS | VARIABILITY | ORIGIN | SPECTROSCOPY | galaxies: active | techniques: spectroscopic | ASTRONOMY & ASTROPHYSICS | CHANDRA | ABSORPTION | GALAXIES | galaxies: nuclei | EMISSION | galaxies: individual (NGC 4051)
Journal Article
Astrophysics and Space Science, ISSN 0004-640X, 11/2014, Volume 354, Issue 1, pp. 205 - 209
Journal Article
The Astrophysical Journal, ISSN 0004-637X, 12/2006, Volume 652, Issue 2 I, pp. 1563 - 1571
Journal Article
The Astrophysical Journal, ISSN 1538-4357, 01/2016, Volume 817, Issue 2, p. 142
Journal Article
Astrophysical Journal, ISSN 0004-637X, 09/2013, Volume 774, Issue 1, pp. 29 - 11
Journal Article
Monthly Notices of the Royal Astronomical Society: Letters, ISSN 1745-3925, 05/2016, Volume 458, Issue 1, pp. L69 - L73
Several studies indicate that radio-loud (RL) active galactic nuclei (AGNs) are produced only by the most massive black holes (BH), M-BH similar to... 
Polarization | Galaxies: active | Galaxies: jet | Line: profiles | Galaxies: individual: PKS 2004-447 | POPULATION | PEAKED EMISSION-LINES | QUASARS | ACTIVE GALACTIC NUCLEI | galaxies: active | galaxies: individual: PKS 2004-447 | line: profiles | ORIENTATION | ASTRONOMY & ASTROPHYSICS | polarization | GALAXIES | SPECTRA | SCATTERING | galaxies: jet | NGC-1068
Journal Article
Journal Article
Monthly Notices of the Royal Astronomical Society, ISSN 0035-8711, 12/2015, Volume 454, Issue 4, pp. 4277 - 4277
We report short-cadence monitoring of a radio-quiet (RQ) Active Galactic Nuclei (AGN), NGC 7469, at 95 GHz (3 mm) over a period of 70 d with the CARMA... 
Origins | Active galactic nuclei | X rays | Similarity | Flux | Emission | Accretion disks | Monitoring
Journal Article
ASTROPHYSICAL JOURNAL, ISSN 0004-637X, 09/2019, Volume 882, Issue 2, p. 130
X-ray absorption of high-redshift quasars is enigmatic, because it remains unclear where in the universe the absorbing gas is. If absorption occurs near the... 
atomic processes | opacity | galaxies: active | quasars: absorption lines | quasars: individual (RBS 315) | ASTRONOMY & ASTROPHYSICS
Journal Article
09/2015
We report short-cadence monitoring of a radio-quiet Active Galactic Nuclei (AGN), NGC7469, at 95 GHz (3 mm) over a period of 70 days with the CARMA telescope.... 
Journal Article
Monthly Notices of the Royal Astronomical Society, ISSN 0035-8711, 01/2020, Volume 491, Issue 3, pp. 3523 - 3534
ABSTRACT We report on daily monitoring of the Seyfert galaxy ngc 7469, around 95 and 143 GHz, with the iram (Institut de Radioastronomie Millimetrique) 30- m... 
Physics - High Energy Astrophysical Phenomena
Journal Article
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, ISSN 0035-8711, 05/2019, Volume 485, Issue 1, pp. 416 - 427
The observed spatial and kinematic overlap between soft X-ray emission and the narrow-line region (NLR) in obscured active galactic nuclei (AGNs) yields... 
galaxies: Seyfert | X-rays: general | PARAMETER-ESTIMATION | OBSCURED AGN | SOLAR-SYSTEM ABUNDANCES | NGC 1068 | ACTIVE GALACTIC NUCLEI | SPECTROSCOPY | galaxies: active | ASTRONOMY & ASTROPHYSICS | CONFINEMENT | ABSORPTION | REFLECTION GRATING SPECTROMETER | EMISSION
Journal Article