Astronomy and Astrophysics – Astrophysics
Scientific paper
1997-05-02
Astronomy and Astrophysics
Astrophysics
Accepted for publication in ApJL, uses aas2pp4.sty
Scientific paper
10.1086/310782
An important feature of the EUV spectrum (known as the Big Blue Bump, hereafter BBB) in Seyfert Galaxies is the narrow range in its cutoff energy E0 from source to source, even though the luminosity changes by 4 orders of magnitude. Here we show that if the BBB is due to accretion disk emission, then in order to account for this ``universality'' in the value of E0, the emission mechanism is probably optically thin bremsstrahlung. In addition, we demonstrate that the two-phase model with active regions localized on the surface of the cold disk is consistent with this constraint if the active regions are very compact and are highly transient, i.e., they evolve faster than one dynamical time scale.
Melia Fulvio
Nayakshin Sergei
No associations
LandOfFree
Big Blue Bump and Transient Active Regions in Seyfert Galaxies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Big Blue Bump and Transient Active Regions in Seyfert Galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Big Blue Bump and Transient Active Regions in Seyfert Galaxies will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-593366