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X-Ray Timing and Spectral Observations of Active Galactic Nuclei

Space Science Reviews, 1985
Over 500 galaxies with active nuclei (AGN), in which class are included Seyfert galaxies, radio galaxies, QSOs and BL Lacertid-type objects, have so far been detected at X-ray wavelengths. Most of these are faint objects for which the only information available is a flux obtained from an observation with the Einstein Observatory, but somewhere upwards ...
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X-Ray Spectra of Active Galactic Nuclei

1980
There are a variety of galaxies which are classified as nuclearactive, ranging from those which have nuclei which are merely distinguishable from a stellar component all the way to QSO’s. The subject of this lecture will be only those extreme cases (Seyfert I, BL Lac and quasar) which constitute the most intense compact X-ray sources which are ...
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Optical and X-Ray Properties of Active Galactic Nuclei

1994
The discovery of nuclear activity in galaxies results from the pioneering work of Fathi, Slipher2 and Hubble3. The first found Active Galactic Nuclei (AGN), NGC1068, NGC4051 and NGC4151, displayed not only strong broad permittted emission hydrogen lines (such as Hβ λ4861) but also narrow forbidden ion emission lines, characteristic of well known ...
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Relativistic Jets from Active Galactic Nuclei

Annual Review of Astronomy and Astrophysics, 2019
Roger Blandford
exaly  

VARIABILITY OF ACTIVE GALACTIC NUCLEI FROM THE OPTICAL TO X-RAY REGIONS

Astronomical and Astrophysical Transactions, 2003
C Martin Gaskell
exaly  

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