Works matching DE "SEYFERT galaxies"

Results: 372

AGN outflows and their properties in Mrk 766 as revealed by KOOLS-IFU on the Seimei Telescope.

Published in:

Publications of the Astronomical Society of Japan, 2025, v. 77, n. 3, p. 562, doi. 10.1093/pasj/psaf025

By:

Oh, Kyuseok;
Ueda, Yoshihiro;
Yamada, Satoshi;
Toba, Yoshiki;
Isogai, Keisuke;
Tanimoto, Atsushi;
Ogawa, Shoji;
Uematsu, Ryosuke;
Nakatani, Yuya;
Fujiwara, Kanta;
Okada, Yuta;
Matsubayashi, Kazuya;
Setoguchi, Kenta

Publication type:

Article

Infrared Seyferts: a new population of active galaxies?

Published in:

Nature, 1985, p. 240, doi. 10.1038/314240a0

By:

de Grijp, M. H. K.;
Miley, G. K.;
Lub, J.;
de Jong, T.

Publication type:

Article

Solid Identification of Extragalactic Gamma-Ray Source Using High-Resolution Radio Interferometric Observation.

Published in:

Universe (2218-1997), 2025, v. 11, n. 3, p. 83, doi. 10.3390/universe11030083

By:

Gabányi, Krisztina Éva;
Frey, Sándor;
Perger, Krisztina;
Kun, Emma

Publication type:

Article

The Host Galaxy Fluxes of Active Galaxy Nuclei Are Generally Overestimated by the Flux Variation Gradient Method.

Published in:

Universe (2218-1997), 2024, v. 10, n. 7, p. 282, doi. 10.3390/universe10070282

By:

Cai, Minxuan;
Wan, Zhen;
Cai, Zhenyi;
Fan, Lulu;
Wang, Junxian

Publication type:

Article

Uncovering the First AGN Jets with AXIS.

Published in:

Universe (2218-1997), 2024, v. 10, n. 5, p. 227, doi. 10.3390/universe10050227

By:

Connor, Thomas;
Bañados, Eduardo;
Cappelluti, Nico;
Foord, Adi

Publication type:

Article

The Power of Relativistic Jets: A Comparative Study.

Published in:

Universe (2218-1997), 2024, v. 10, n. 4, p. 156, doi. 10.3390/universe10040156

By:

Foschini, Luigi;
Dalla Barba, Benedetta;
Tornikoski, Merja;
Andernach, Heinz;
Marziani, Paola;
Marscher, Alan P.;
Jorstad, Svetlana G.;
Järvelä, Emilia;
Antón, Sonia;
Dalla Bontà, Elena

Publication type:

Article

X-ray Properties of Two Complementary Samples of Intermediate Seyfert Galaxies.

Published in:

Universe (2218-1997), 2024, v. 10, n. 2, p. 69, doi. 10.3390/universe10020069

By:

Dalla Barba, Benedetta;
Foschini, Luigi;
Berton, Marco;
Crepaldi, Luca;
Vietri, Amelia

Publication type:

Article

Changing-Look Narrow-Line Seyfert 1 Galaxies, their Detection with SVOM, and the Case of NGC 1566.

Published in:

Universe (2218-1997), 2024, v. 10, n. 2, p. 61, doi. 10.3390/universe10020061

By:

Xu, D. W.;
Komossa, S.;
Grupe, D.;
Wang, J.;
Xin, L. P.;
Han, X. H.;
Wei, J. Y.;
Bai, J. Y.;
Bon, E.;
Cangemi, F.;
Cordier, B.;
Dennefeld, M.;
Gallo, L. C.;
Kollatschny, W.;
Kong, De-Feng;
Ochmann, M. W.;
Qiu, Y. L.;
Schartel, N.

Publication type:

Article

Multi-Epoch Optical Spectroscopy Variability of the Changing-Look AGN Mrk 883.

Published in:

Universe (2218-1997), 2024, v. 10, n. 1, p. 21, doi. 10.3390/universe10010021

By:

Benítez, Erika;
Negrete, Castalia Alenka;
Ibarra-Medel, Héctor;
Cruz-González, Irene;
Rodríguez-Espinosa, José Miguel

Publication type:

Article

Enigmatic Emission Structure around Mrk 783: Cross-Ionization of a Companion 100 kpc Away.

Published in:

Universe (2218-1997), 2023, v. 9, n. 12, p. 493, doi. 10.3390/universe9120493

By:

Moiseev, Alexei V.;
Smirnova, Aleksandrina A.;
Movsessian, Tigran A.

Publication type:

Article

Estimate of SMBH Spin for Narrow-Line Seyfert 1 Galaxies.

Published in:

Universe (2218-1997), 2023, v. 9, n. 4, p. 175, doi. 10.3390/universe9040175

By:

Piotrovich, Mikhail;
Buliga, Stanislava;
Natsvlishvili, Tinatin

Publication type:

Article

A New Sample of Gamma-Ray Emitting Jetted Active Galactic Nuclei.

Published in:

Universe (2218-1997), 2022, v. 8, n. 11, p. 587, doi. 10.3390/universe8110587

By:

Foschini, Luigi;
Lister, Matthew L.;
Andernach, Heinz;
Ciroi, Stefano;
Marziani, Paola;
Antón, Sonia;
Berton, Marco;
Dalla Bontà, Elena;
Järvelä, Emilia;
Marchã, Maria J. M.;
Romano, Patrizia;
Tornikoski, Merja;
Vercellone, Stefano;
Vietri, Amelia

Publication type:

Article

X-ray Insight into High-Energy Processes in Extreme Galactic Nuclear Environment.

Published in:

Universe (2218-1997), 2022, v. 8, n. 10, p. N.PAG, doi. 10.3390/universe8100515

By:

Wang, Q. Daniel

Publication type:

Article

Determination of the Physical Parameters of AGNs in Seyfert 1 Galaxies LEDA 3095839 and VII Zw 244 Based on Spectropolarimetric Observations.

Published in:

Universe (2218-1997), 2022, v. 8, n. 7, p. N.PAG, doi. 10.3390/universe8070383

By:

Shablovinskaya, Elena;
Piotrovich, Mikhail;
Malygin, Eugene;
Buliga, Stanislava;
Natsvlishvili, Tinatin

Publication type:

Article

Infrared Spectral Energy Distribution and Variability of Active Galactic Nuclei: Clues to the Structure of Circumnuclear Material.

Published in:

Universe (2218-1997), 2022, v. 8, n. 6, p. N.PAG, doi. 10.3390/universe8060304

By:

Lyu, Jianwei;
Rieke, George

Publication type:

Article

SPECTRAL AND PHOTOMETRIC STUDIES OF MRK6 AND MRK1040 IN THE OPTICAL RANGE.

Published in:

Eurasian Physical Technical Journal, 2025, v. 22, n. 1, p. 115, doi. 10.31489/2025N1/115-126

By:

S. A., Shomshekova;
E. K., Denissyuk;
L. N., Kondratyeva;
A. V., Serebryanskiy;
G. K., Aimanova;
L., Aktay

Publication type:

Article

A Black Hole's Elusive Signal Revealed at Last.

Published in:

Mercury, 2009, v. 38, n. 3, p. 9

By:

Wanjek, Christopher

Publication type:

Article

Cosmological Constraints on a Temporal Variation of the Proton-to-electron Mass Ratio based on the Red-shifted Lines of Extragalactic Argonium.

Published in:

Astronomy Reports, 2021, v. 65, n. 12, p. 1211, doi. 10.1134/S1063772921120076

By:

Terashkevich, V. A.;
Pazyuk, E. A.;
Stolyarov, A. V.;
Wiebe, D. S.

Publication type:

Article

Changing Looks of the Nucleus of Seyfert Galaxy NGC 3516 during 2016–2020.

Published in:

Astronomy Reports, 2020, v. 64, n. 12, p. 979, doi. 10.1134/S1063772920120082

By:

Oknyansky, V. L.;
Mikailov, Kh. M.;
Huseynov, N. A.

Publication type:

Article

Narrow-Line SY1 NGC 4748 in X-Rays: Detailed Case-Study.

Published in:

Astronomy Reports, 2020, v. 64, n. 5, p. 384, doi. 10.1134/S1063772920050042

By:

Vasylenko, A.;
Fedorova, E.;
Del Popolo, A.

Publication type:

Article

Morphology of Seyfert Galaxies.

Published in:

Astronomy Reports, 2018, v. 62, n. 12, p. 853, doi. 10.1134/S1063772918120181

By:

Chen, Y.-C.;
Hwang, C.-Y.

Publication type:

Article

The mass of the central body of the galaxy Ark 120 and the orbits of objects in its gravitational field.

Published in:

Astronomy Reports, 2015, v. 59, n. 2, p. 123, doi. 10.1134/S106377291412004X

By:

Denissyuk, E.;
Valiullin, R.;
Gaisina, V.

Publication type:

Article

Narrow-line Seyfert 1 galaxies. Relationship between their frequency of occurrence and the large-scale structure of the universe.

Published in:

Astronomy Reports, 2014, v. 58, n. 4, p. 205, doi. 10.1134/S1063772914040052

By:

Ermash, A.

Publication type:

Article

AGN III-primordial activity in the nuclei of disk galaxies with pseudobulges.

Published in:

Astronomy Reports, 2013, v. 57, n. 6, p. 401, doi. 10.1134/S1063772913060036

By:

Komberg, B.;
Ermash, A.

Publication type:

Article

The luminosity function of narrow-line Seyfert 1 galaxies based on SDSS data (DR7).

Published in:

Astronomy Reports, 2013, v. 57, n. 5, p. 317, doi. 10.1134/S106377291305003X

By:

Ermash, A.

Publication type:

Article

Activity of the Seyfert galaxy NGC 4151 in the near-IR in 1994-2011.

Published in:

Astronomy Reports, 2013, v. 57, n. 2, p. 71, doi. 10.1134/S1063772913010071

By:

Taranova, O.;
Shenavrin, V.

Publication type:

Article

The motion of an emission-line region near the center of the galaxy NGC 4151.

Published in:

Astronomy Reports, 2011, v. 55, n. 9, p. 761, doi. 10.1134/S1063772911090034

By:

Denissyuk, E.;
Valiullin, R.;
Gaisina, V.

Publication type:

Article

The Seyfert 1 galaxy Ark 120 in 1996–2005. Temporal characteristics of the optical variability.

Published in:

Astronomy Reports, 2008, v. 52, n. 9, p. 693, doi. 10.1134/S1063772908090011

By:

Doroshenko, V. T.;
Sergeev, S. G.;
Pronik, V. I

Publication type:

Article

The Seyfert 1 galaxy Ark 120. Spectral variability in 1992–2005.

Published in:

Astronomy Reports, 2008, v. 52, n. 6, p. 442, doi. 10.1134/S1063772908060024

By:

Doroshenko, V. T.;
Sergeev, S. G.;
Pronik, V. I.

Publication type:

Article

Behavior of the Broad Hα Component in the Seyfert Galaxy NGC 4151 in 1976–2003.

Published in:

Astronomy Reports, 2004, v. 48, n. 8, p. 622, doi. 10.1134/1.1787064

By:

Denisyuk, É. K.;
Valiullin, R. R.;
Argyle, R. W.;
Gaisina, V. N.

Publication type:

Article

Seyfert Nuclei as Sources of Ultrahigh-Energy Cosmic Rays.

Published in:

Astronomy Reports, 2004, v. 48, n. 2, p. 81, doi. 10.1134/1.1648071

By:

Uryson, A. V.

Publication type:

Article

Influence of Accretion-Disk Models on the Structure of the Iron K[sub α] Line.

Published in:

Astronomy Reports, 2003, v. 47, n. 9, p. 733, doi. 10.1134/1.1611214

By:

Zakharov, A. F.;
Repin, S. V.

Publication type:

Article

Identification of Sources of Ultrahigh Energy Cosmic Rays.

Published in:

Astronomy Reports, 2001, v. 45, n. 8, p. 591, doi. 10.1134/1.1388924

By:

Uryson, A. V.

Publication type:

Article

Shapes of Fe K <sub>α</sub> lines from annuli near black holes.

Published in:

Physics of Atomic Nuclei, 2007, v. 70, n. 1, p. 159, doi. 10.1134/S106377880701019X

By:

Zakharov, A.

Publication type:

Article

Escape dynamics and fractal basin boundaries in Seyfert galaxies.

Published in:

Nonlinear Dynamics, 2015, v. 80, n. 3, p. 1109, doi. 10.1007/s11071-015-1930-7

By:

Zotos, Euaggelos

Publication type:

Article

Digital archival spectral data for Seyfert galaxies and their use in conjunction with modern FAI spectral data.

Published in:

Experimental Astronomy, 2023, v. 56, n. 2/3, p. 557, doi. 10.1007/s10686-023-09916-6

By:

Shomshekova, Saule;
Kondratyeva, Lyudmila;
Omarov, Chingis;
Izmailova, Ildana;
Umirbayeva, Adel;
Moshkina, Svetlana

Publication type:

Article

Studying the Correlation between Supermassive Black Holes and Star Formation Rate for Samples of Seyfert Galaxies (Type 1 and 2).

Published in:

Iraqi Journal of Physics, 2021, v. 19, n. 48, p. 52, doi. 10.30723/ijp.v19i48.641

By:

Kareem, Salwa Haithem;
Rashed, Y. E.

Publication type:

Article

THE COSMIC RADIO BACKGROUND AND JET CONNECTION.

Published in:

International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology, 2010, v. 19, n. 6, p. 965, doi. 10.1142/S0218271810016762

By:

SINGAL, JACK;
STAWARZ, ŁUKASZ;
PETROSIAN, VAHE;
Lawrence, Andrew

Publication type:

Article

ON THE X-RAY PROPERTIES OF H<sub>2</sub>O MASER HOST GALAXIES.

Published in:

International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology, 2009, v. 18, n. 9, p. 1367, doi. 10.1142/S0218271809015151

By:

QIAN GUO;
JIANG-SHUI ZHANG;
JUN-HUI FAN

Publication type:

Article

MATTER UNDER STRONG GRAVITY:: THE NUCLEAR REGIONS OF AGN.

Published in:

International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology, 2004, v. 13, n. 7, p. 1509, doi. 10.1142/S0218271804005742

By:

Boller, Thomas

Publication type:

Article

Red Quasars: Estimation of SMBH Spin, Mass, and Accretion Disk Inclination Angle.

Published in:

Astronomische Nachrichten, 2024, v. 345, n. 8, p. 1, doi. 10.1002/asna.20240058

By:

Piotrovich, M. Yu.;
Buliga, S. D.;
Natsvlishvili, T. M.

Publication type:

Article

Cover Picture: Astron. Nachr. 10/2023.

Published in:

Astronomische Nachrichten, 2023, v. 344, n. 10, p. 1, doi. 10.1002/asna.20239018

By:

Schey, L.;
Heidt, J.;
Pramskiy, A.;
Thompson, D.;
Agapito, G.;
Esposito, S.;
Gredel, R.;
Miller, D.;
Pinna, E.;
Puglisi, A.;
Rossi, F.;
Seifert, W.;
Taylor, G.;
Quirrenbach, A.

Publication type:

Article

Decomposition of the central structure of NGC 2273 in the NIR: A case study.

Published in:

Astronomische Nachrichten, 2023, v. 344, n. 10, p. 1, doi. 10.1002/asna.20230094

By:

Schey, L.;
Heidt, J.;
Pramskiy, A.;
Thompson, D.;
Agapito, G.;
Esposito, S.;
Gredel, R.;
Miller, D.;
Pinna, E.;
Puglisi, A.;
Rossi, F.;
Seifert, W.;
Taylor, G.;
Quirrenbach, A.

Publication type:

Article

Unraveling the enigmatic soft x‐ray excess: Current understanding and future perspectives.

Published in:

Astronomische Nachrichten, 2023, v. 344, n. 6, p. 1, doi. 10.1002/asna.20230105

By:

Boller, Thomas

Publication type:

Article

Soft excess in AGN with relativistic X‐ray reflection.

Published in:

Astronomische Nachrichten, 2023, v. 344, n. 4, p. 1, doi. 10.1002/asna.20230042

By:

Ezhikode, Savithri H.;
P., Shyam Prakash V.;
Dewangan, Gulab C.;
Mathew, Blesson

Publication type:

Article

A novel "spectral‐ratio model fitting" to resolve complicated X‐ray spectral variations in active galactic nuclei.

Published in:

Astronomische Nachrichten, 2023, v. 344, n. 4, p. 1, doi. 10.1002/asna.20230039

By:

Midooka, Takuya;
Mizumoto, Misaki;
Ebisawa, Ken

Publication type:

Article

Changing looks of the nucleus of the Seyfert galaxy NGC 1566 compared with other changing‐look AGNs.

Published in:: Astronomische Nachrichten, 2022, v. 343, n. 1/2, p. 1, doi. 10.1002/asna.20210080
Publication type:: Article

Modeling changing‐look active galactic nuclei phenomenon in 1D using accretion disk instabilities.

Published in:

Astronomische Nachrichten, 2022, v. 343, n. 1/2, p. 1, doi. 10.1002/asna.20210065

By:

Śniegowska, Marzena;
Grzędzielski, Mikołaj;
Czerny, Bożena;
Janiuk, Agnieszka

Publication type:

Article

Peaked sources and narrow‐line Seyfert 1s: A love story.

Published in:

Astronomische Nachrichten, 2021, v. 342, n. 9/10, p. 1066, doi. 10.1002/asna.20210036

By:

Berton, Marco;
Järvelä, Emilia

Publication type:

Article

Investigating possible unification of Seyfert galaxies and blazars in Fermi‐Large Area Telescope sample.

Published in:

Astronomische Nachrichten, 2021, v. 342, n. 7/8, p. 1024, doi. 10.1002/asna.20210005

By:

Iyida, Evaristus U.;
Eya, Innocent O.;
Odo, Finbarr C.

Publication type:

Article