Results 111 to 120 of about 6,096 (167)

Geometry and kinematics in the central broad-line region of a Seyfert 1 galaxy [PDF]

, 2002
W. Kollatschny, K. Bischoff
openalex   +1 more source

Celebrating 30 years of science from the James Clerk Maxwell Telescope. [PDF]

R Soc Open Sci, 2017
Robson I, Holland WS, Friberg P.
europepmc   +1 more source

X-Ray Reverberation Mapping and Dramatic Variability of Seyfert 1 Galaxy 1H 1934-063 [PDF]

, 2018
Sara Frederick, Erin Kara, Christopher Reynolds, Ciro Pinto, Andrew Fabian   +4 more
openalex   +1 more source

When the Milky Way hosted a quasar

, 2022
Marin F, Churazov E, Khabibullin I, Ferrazzoli R, Gesu LD, Barnouin T, Marco AD, Middei R, Vikhlinin A, Costa E, Soffitta P, Muleri F, Sunyaev R, Forman W, Kraft R, Bianchi S, Donnarumma I, Petrucci P, Enoto T, Agudo I, Antonelli L, Bachetti M, Baldini L, Baumgartner W, Bellazzini R, Bongiorno S, Bonino R, Brez A, Bucciantini N, Capitanio F, Castellano S, Cavazzuti E, Chen C, Ciprini S, De Rosa A, Monte ED, Lalla ND, Doroshenko V, Dovciak M, Ehlert S, Evangelista Y, Fabiani S, Garcia J, Gunji S, Hayashida K, Heyl J, Ingram A, Iwakiri W, Jorstad S, Kaaret P, Karas V, Kitaguchi T, Kolodziejczak J, Krawczynski H, Monaca FL, Latronico L, Liodakis I, Maldera S, Manfreda A, Marinucci A, Marscher A, Marshall H, Massaro F, Matt G, Mitsuishi I, Mizuno T, Negro M, Ng C, O'Dell S, Omodei N, Oppedisano C, Papitto A, Pavlov G, Peirson A, Perri M, Pesce-Rollins M, Pilia M, Possenti A, Poutanen J, Puccetti S, Ramsey B, Rankin J, Ratheesh A, Roberts O, Romani R, Sgro C, Slane P, Spandre G, Swartz D, Tamagawa T, Tavecchio F, Taverna R, Tawara Y, Tennant A, Thomas N, Tombesi F, Trois A, Tsygankov S, Turolla R, Vink J, Weisskopf M, Wu K, Xie F, Zane S.   +103 more
europepmc   +1 more source

A massive, dead disk galaxy in the early Universe. [PDF]

Nature, 2017
Toft S, Zabl J, Richard J, Gallazzi A, Zibetti S, Prescott M, Grillo C, Man AWS, Lee NY, Gómez-Guijarro C, Stockmann M, Magdis G, Steinhardt CL.   +12 more
europepmc   +1 more source

An X-ray view of Mrk 705: A borderline narrow-line Seyfert 1 galaxy [PDF]

, 2005
Luigi Gallo, I. Balestra, E. Costantini, Thomas Böller, V. Burwitz, E. Ferrero, Smita Mathur   +6 more
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Two New Seyfert Galaxies

The Astrophysical Journal, 1968
H. C. Arp, E. Y. Khachikian, C. R. Lynds, D. W. Weedman   +3 more
openaire   +1 more source

Extragalactic background light measurements and applications. [PDF]

R Soc Open Sci, 2016
Cooray A.
europepmc   +1 more source

The broad-bandXMM-NewtonandINTEGRALspectra of bright type 1 Seyfert galaxies [PDF]

, 2008
F. Panessa, L. Bassani, A. De Rosa, A. J. Bird, A. J. Dean, M. Fiocchi, A. Malizia, M. Molina, P. Ubertini, R. Walter   +9 more
openalex   +1 more source

H‐like Iron Emission in Narrow‐Line Seyfert 1 Galaxies as a Temperature Diagnostic of Accretion Flows [PDF]

, 1999
M. A. Bautista, L. Titarchuk
openalex   +1 more source