The central black hole masses and Doppler factors of the γ - ray loud blazars
نویسندگان
چکیده
منابع مشابه
The basic parameters of γ-ray-loud blazars
We determined the basic parameters, such as the central black hole mass (M), the boosting factor (or Doppler factor) (δ), the propagation angle (Φ) and the distance along the axis to the site of γ-ray production (d) for 23 γ-ray-loud blazars using their available variability timescales. In this method, the absorption effect depends on the γ-ray energy, emission size and property of the accretio...
متن کاملBasic properties of Gamma-ray loud blazars
In this paper, a method is proposed to determine the basic properties of γ-ray loud blazars, among them the central black hole mass, M , the Doppler factor, δ, the propagation angle of the γ-rays with respect to the symmetric axis of a twotemperature accretion disk, Φ, and the distance (i.e. the height above the accretion disk), d at which the γ-rays are created, for seven γ-ray loud blazars wi...
متن کاملRelativistic Flows in TeV Blazars
Rapid variability of the TeV emission in several blazars implies a central black hole mass MBH < 10M⊙, appreciably smaller than the values estimated from the MBH −Lbulg relation, and Doppler factors for the γ-ray emitting fluid much larger than those associated with radio patterns. We discuss the conditions in the central engine required to account for the short timescales and large luminositie...
متن کاملBlack hole masses and Doppler factors of γ - ray active galactic nuclei
The sizes of the broad-line regions (BLRs) in γ-ray active galactic nuclei (AGNs) are estimated from their optical continuum luminosity by using the empirical relation between RBLR and Lλ,opt. Using the broad emission line data, we derive the photon energy density in the relativistic blobs near the massive black holes in AGNs. We calculate the power of the broad-line photons Compton up-scattere...
متن کاملWeighing black holes in radio-loud AGNs
Because of the contamination of jets, using the size – continuum luminosity relation can overestimate the broad line region (BLR) size and black hole mass for radio-loud AGNs. We propose a new relation between the BLR size and Hβ emission line luminosity and present evidences for using it to get more accurate black hole masses of radio-loud AGNs. For extreme radio-loud AGNs such as blazars with...
متن کامل