Results 211 to 220 of about 9,238,867 (222)
Some of the next articles are maybe not open access.
X-Ray Timing and Spectral Observations of Active Galactic Nuclei
Space Science Reviews, 1985Over 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 ...
openaire +1 more source
X-Ray Spectra of Active Galactic Nuclei
1980There 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 ...
openaire +1 more source
Optical and X-Ray Properties of Active Galactic Nuclei
1994The 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 ...
openaire +1 more source
Relativistic Jets from Active Galactic Nuclei
Annual Review of Astronomy and Astrophysics, 2019Roger Blandford
exaly
VARIABILITY OF ACTIVE GALACTIC NUCLEI FROM THE OPTICAL TO X-RAY REGIONS
Astronomical and Astrophysical Transactions, 2003C Martin Gaskell
exaly
X-ray Studies of the Central Engine in Active Galactic Nuclei with Suzaku
Springer Theses, 2016Hirofumi Noda
exaly
X-ray Redshifts for Obscured Active Galactic Nuclei with AXIS Deep and Intermediate Surveys
UniverseStefano Marchesi +2 more
exaly

