Revealing a hard X-ray spectral component that reverberates within one light hour of the central supermassive black hole in Ark 564 [PDF]
, 2015 Context. Arakelian 564 (Ark 564, z = 0.0247) is an X-ray-bright narrow-line Seyfert 1 galaxy. By using advanced X-ray timing techniques, an excess of “delayed” emission in the hard X-ray band (4-7.5 keV) following about 1000 s after “flaring” light in ...
core +1 more source
Contribution of parsec-scale material on to the polarized X-ray spectrum of type 1 Seyfert galaxies
, 2018 International audienceType 1 radio-quiet active galactic nuclei (AGN) are seen from the polar direction and offer a direct view of their central X-ray engine.
Marin, F. +5 more
core +1 more source
A reflection dominated X--ray spectrum discovered by ASCA in the Circinus Galaxy
, 2007 We report the first pointed X--ray observation, made by ASCA, of the nearby Seyfert 2 galaxy in Circinus. The spectrum consists of a very prominent (EW¸2 keV) fluorescent 6.4 keV iron line, a very flat continuum (photon spectral index less than one) and ...
F. Fiore +9 more
core
, 2001 We present a catalogue of ROSAT detected sources in the sample of spectroscopically selected Seyfert 1 and Seyfert 2 galaxies of Rafanelli et al. (\cite{Rafanelli95}). The catalogue contains 102 Seyfert 1 and 36 Seyfert 2 galaxies.
P. Rafanelli +5 more
core +1 more source
Optical colour maps of Seyfert galaxies [PDF]
Astronomy and Astrophysics Supplement Series, 1998 9 pages, 26 figures, LaTeX, uses l-aa.sty, psfig.sty. A&AS, accepted. Grayscale JPEGs included, original color figures (gif or ps format) can be obtained only by anonymous ftp from ftp://oj287.astro.utu.fi/pub ...
openaire +2 more sources
Caracterización de la emisión observada en bandas fotométricas e Hidrocarburos Aromáticos Policíclicos, de un conjunto de galaxias tipo Seyfert 1, Seyfert 2, mediante la aplicación de un análisis estadístico tipo Cluster y pruebas Kolmogorov-Smirnov [PDF]
, 2012 En este trabajo se presenta un estudio de las emisiones, de un grupo de 108 galaxias Seyfert 1 y Seyfert 2, en las bandas J(1.26μm), H(1.60μm) y K(2.25μm), 6μm, e IRAS 12μm, 25μm, 60μm, 100μm, Rayos X (2-10 KeV) y líneas espectrales asociadas a moléculas
Aguilar Sánchez, John Fabio
core
Delving into X-Ray Obscuration of Type 2 AGN, Near and Far
, 2014 Using self-consistent, physically motivated models, we investigate the X-ray obscuration in 19 Type 2 [O iii] 5007 selected active galactic nuclei (AGNs), 9 of which are local Seyfert 2 galaxies and 10 of which are Type 2 quasar candidates.
Lamassa, Stephanie M. +6 more
core
Observations of a Magellanic Corona. [PDF]
Nature, 2022 Krishnarao D +8 more
europepmc +1 more source
Cosmic ray feedback in galaxies and galaxy clusters: A pedagogical introduction and a topical review of the acceleration, transport, observables, and dynamical impact of cosmic rays. [PDF]
Astron Astrophys Rev, 2023 Ruszkowski M, Pfrommer C.
europepmc +1 more source
, 2023 Dissertação (Mestrado)Hidrocarbonetos Aromáticos Policíclicos (PAHs) sao moléculas orgânicas que compõe cerca de 20% do carbono presente no meio interestelar e na poeira de galáxias.
Chaves, William da Silva
core