Littérature scientifique sur le sujet « Active Galactic Nuclei, quasars, emission lines, Seyfert »
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Consultez les listes thématiques d’articles de revues, de livres, de thèses, de rapports de conférences et d’autres sources académiques sur le sujet « Active Galactic Nuclei, quasars, emission lines, Seyfert ».
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Articles de revues sur le sujet "Active Galactic Nuclei, quasars, emission lines, Seyfert"
Zhou, Yipeng, Lei Hao, Peng Jiang, Xiang Pan, Luming Sun, Chichuan Jin, Xuejie Dai et al. « Discovery of a Radio-loud Narrow-line Seyfert 1 Galaxy at z = 0.9 Reddened with a Strong 2175 Å Bump ». Astrophysical Journal 941, no 2 (1 décembre 2022) : 111. http://dx.doi.org/10.3847/1538-4357/aca085.
Texte intégralMarziani, Paola, Marco Berton, Swayamtrupta Panda et Edi Bon. « Optical Singly-Ionized Iron Emission in Radio-Quiet and Relativistically Jetted Active Galactic Nuclei ». Universe 7, no 12 (8 décembre 2021) : 484. http://dx.doi.org/10.3390/universe7120484.
Texte intégralLiu, Chenxu, Karl Gebhardt, Erin Mentuch Cooper, Dustin Davis, Donald P. Schneider, Robin Ciardullo, Daniel J. Farrow et al. « The Active Galactic Nuclei in the Hobby–Eberly Telescope Dark Energy Experiment Survey (HETDEX). I. Sample Selection ». Astrophysical Journal Supplement Series 261, no 2 (21 juillet 2022) : 24. http://dx.doi.org/10.3847/1538-4365/ac6ba6.
Texte intégralLyu, Jianwei, et George H. Rieke. « Polar Dust Emission in Quasar IR SEDs and Its Correlation with Narrow-line Regions ». Astrophysical Journal Letters 940, no 2 (25 novembre 2022) : L31. http://dx.doi.org/10.3847/2041-8213/ac9e5c.
Texte intégralMaitra, Chandreyee, Frank Haberl, Valentin D. Ivanov, Maria-Rosa L. Cioni et Jacco Th van Loon. « Identification of AGN in the XMM-Newton X-ray survey of the SMC ». Astronomy & ; Astrophysics 622 (24 janvier 2019) : A29. http://dx.doi.org/10.1051/0004-6361/201833663.
Texte intégralJha, Vivek Kumar, Hum Chand, Vineet Ojha, Amitesh Omar et Shantanu Rastogi. « A comparative study of the physical properties for a representative sample of Narrow and Broad-line Seyfert galaxies ». Monthly Notices of the Royal Astronomical Society 510, no 3 (21 décembre 2021) : 4379–93. http://dx.doi.org/10.1093/mnras/stab3700.
Texte intégralFilippenko, Alexei V. « Low-Luminosity Active Galactic Nuclei ». Symposium - International Astronomical Union 134 (1989) : 495–512. http://dx.doi.org/10.1017/s0074180900141804.
Texte intégralMakishima, K., N. Iyomoto, Y. Ishisaki et Y. Terashima. « X-Ray Observations of Low-Luminosity Active Galactic Nuclei ». International Astronomical Union Colloquium 159 (1997) : 52–53. http://dx.doi.org/10.1017/s0252921100039610.
Texte intégralFoschini, Luigi, Matthew L. Lister, Heinz Andernach, Stefano Ciroi, Paola Marziani, Sonia Antón, Marco Berton et al. « A New Sample of Gamma-Ray Emitting Jetted Active Galactic Nuclei ». Universe 8, no 11 (4 novembre 2022) : 587. http://dx.doi.org/10.3390/universe8110587.
Texte intégralMoorwood, A. F. M., et E. Oliva. « Infrared [FeII] and H2 Line Emission in Active Galactic Nuclei ». Symposium - International Astronomical Union 134 (1989) : 365–71. http://dx.doi.org/10.1017/s007418090014135x.
Texte intégralThèses sur le sujet "Active Galactic Nuclei, quasars, emission lines, Seyfert"
Constantin, Anca. « Linking the Power Sources of Emission-Line Galaxy Nuclei from the Highest to the Lowest Redshifts ». Ohio University / OhioLINK, 2004. http://www.ohiolink.edu/etd/view.cgi?ohiou1097611827.
Texte intégralXu, Xinfeng. « How Do Quasars Impact Their Host Galaxies ? From the Studies of Quasar Outflows in Absorption and Emission ». Diss., Virginia Tech, 2020. http://hdl.handle.net/10919/98572.
Texte intégralDoctor of Philosophy
Super massive black holes (SMBHs) are believed to exist in the center of almost all massive galaxies, where the brightest accreting ones are named ``quasars''. ``Quasar-mode feedback'' occurs when momentum and energy from the environment of accreting SMBHs couple to the host galaxy. One mechanism for such a coupling is by high-velocity (up to $sim$ 0.2c) quasar-driven ionized outflows, appearing as blue-shifted absorption and emission lines in quasar spectra. Given enough energy and momentum, these outflows are capable of affecting the evolution of their host galaxies. Such quasar outflows are invoked to explain a variety of observations, e.g., the chemical enrichment of the intergalactic medium (IGM), the shape of the observed quasar luminosity function, and the self-regulation of the growth of the SMBHs. In this dissertation, I focus on studying the emission and absorption outflows observed in quasars spectra, collected with the largest telescopes and most powerful instruments in the world. (1). By conducting large broad absorption line (BAL) quasar surveys in both Sloan Digital Sky Survey and Very Large Telescopes (VLT), we determined various physics properties of quasar absorption outflows, e.g., the electron number density (ne), the distance of outflows to the central quasar ($R$), and the kinetic energy carried by the outflow ($dot{E}_{k}$). We demonstrated that half of the typical BAL outflows are situated at $R$ $>$ 100 pc, i.e., having the potential to affect the host galaxies. (2). Our group carried out a Hubble Space Telescope program (PI: Arav) for studying the outflows in the Extreme-UV, collaborating with Dr. Gerard Kriss from Space Telescope Science Institute (STScI). We developed a novel method to fit the multitude of quasar absorption troughs efficiently and accurately. We have identified the most energetic quasar-driven outflows on record and discovered the largest acceleration and velocity-shift for a quasar absorption outflow. (3). By using the VLT data, Xu led the project to study the relationships between BAL outflows and emission line outflows. We found possible connections between these two types of quasar outflows, e.g., the luminosity of the [oiii] ly 5007 emission profile decreases with increasing ne derived from the BAL outflow in the same quasar. These findings are consistent with BAL and emission outflows being different manifestations of the same wind, and the observed relationships are likely a reflection of the outflow density distribution.
BISOGNI, SUSANNA. « The inner structure of Active Galactic Nuclei from spectroscopy of large samples of quasars ». Doctoral thesis, 2017. http://hdl.handle.net/2158/1090117.
Texte intégralChapitres de livres sur le sujet "Active Galactic Nuclei, quasars, emission lines, Seyfert"
Espey, B. R., R. F. Carswell, J. A. Bailey, M. G. Smith et M. J. Ward. « Hα Emission Lines in High Redshift Quasars ». Dans Active Galactic Nuclei, 355–56. Dordrecht : Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-0963-2_109.
Texte intégralKiang, T., et J. H. You. « Cerenkov Line Radiation — a New Interpretation of the Emission Lines of Quasars ». Dans Structure and Evolution of Active Galactic Nuclei, 583–86. Dordrecht : Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4562-3_54.
Texte intégralCheng, F. Z., C. A. Grady et P. L. Selvelli. « Ultraviolet Spectra of 3 Seyfert 1 Galaxies with Optical Fe II Emission Lines ». Dans Structure and Evolution of Active Galactic Nuclei, 513–16. Dordrecht : Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4562-3_38.
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