SPECTROSCOPY OF BROAD-LINE BLAZARS FROM 1LAC

Broad-line and Multi-wave Band Emission from Blazars

We study the correlations of the flux of the broad-line emission (FBLR) with the X-ray emission flux, optical emission flux at 5500 Å and radio emission flux at 5 GHz, respectively, for a large sample of 50 Blazars (39 flat-spectrum radio quasars (FSRQs) and 11 BL Lac objects). Our main results are as follows. There are very strong correlations between FBLR and FX and between LBLR and LX in bot...

The spectrum of the Broad Line Region and the high-energy emission of powerful blazars

High-energy emission (from the X-ray through the γ-ray band) of Flat Spectrum Radio Quasars is widely associated with the inverse Compton (IC) scattering of ambient photons, produced either by the accretion disk or by the Broad Line Region, by highenergy electrons in a relativistic jet. In the modelling of the IC spectrum one usually adopts a simple black body approximation for the external rad...

Broad Band Dielectric Spectroscopy Using an Open-ended Line

In this work a method of broad band dielectric spectroscopy using an open-ended line is proposed. The mathematical development of this method leads to a transcendental equation on the complex plane that possesses infinite solutions. A numerical procedure is described which is capable of obtaining the solution required avoiding the problem of infinite solutions. The study of this equation sugges...

A Balmer-line Broad Absorption Line Quasar

I report the discovery of blueshifted broad absorption line (BAL) troughs in at least six transitions of the Balmer series of hydrogen (Hβ to H9) and in Ca II, Mg II and excited Fe II in the quasar SDSS J125942.80+121312.6. This is only the fourth active galactic nucleus known to exhibit Balmer absorption, all four in conjunction with low-ionization BAL systems containing excited Fe II. The sub...

Techniques in molecular spectroscopy : from broad bandwidth to high resolution