Results 161 to 170 of about 6,380 (236)

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

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

The response of the X-ray luminosity to the interaction strength in Seyfert 1 & 2 galaxies [PDF]

, 2000
Frank E. Pfefferkorn, Thomas Böller
openalex   +1 more source

Extragalactic background light measurements and applications. [PDF]

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

6.7 GHz methanol absorption toward the Seyfert 2 galaxy NGC 3079 [PDF]

, 2008
C. M. Violette Impellizzeri, C. Henkel, A. L. Roy, K. M. Menten   +3 more
openalex   +1 more source

Models of X-ray and gamma-ray emission from Seyfert galaxies [PDF]

, 1996
Roland Svensson
openalex   +1 more source

XMM-NEWTONOBSERVATIONS OF A COMPLETE SAMPLE OF OPTICALLY SELECTED TYPE 2 SEYFERT GALAXIES [PDF]

, 2009
Stephanie LaMassa, Timothy M. Heckman, A. Ptak, A. E. Hornschemeier, Lucimara P. Martins, Paule Sonnentrucker, Christy Tremonti   +6 more
openalex   +1 more source

Magnetic Origin of Black Hole Winds Across the Mass Scale. [PDF]

Nat Astron, 2017
Fukumura K, Kazanas D, Shrader C, Behar E, Tombesi F, Contopoulos I.   +5 more
europepmc   +1 more source