Accretion disks in Seyfert nuclei : broad line profiles and asymmetries

• Keplerian rotation around a massive object in the centre of a Seyfert galaxy is considered as the main broadening mechanism for the broad emission lines. The resultant line profiles are shown to be of power-law form in the wings and are compared with recently published high quality observations. Several possible solutions are given for the [O III]-problem raised by Shields (1978). Asymmetries in the line profiles are explained by anisotropically radiating filaments in two oppositely directed jets emanating from the centre of the disk and by radial motions in or above the disk

Ämnesord

NATURVETENSKAP  -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)

Nyckelord

Theoretical or Mathematical/ astronomical spectra

black holes

galactic nuclei

Seyfert galaxies

spectral line breadth/ asymmetric line profiles

power law profiles

line wings

forbidden O III

accretion disc

supermassive black hole

Seyfert nuclei

broad line profiles

Keplerian rotation

massive object

Seyfert galaxy

broad emission lines

anisotropically radiating filaments

oppositely directed jets

radial motions/ A9760L Black holes A9850C General parameters

classifications of galaxies A9850E Galactic structure

content and morphology A9850R Active and peculiar galaxies

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)