Buscar
Mostrando ítems 11-20 de 3624
Active galactic nuclei at z ∼ 1.5 – II. Black hole mass estimation by means of broad emission lines
(Oxford University Press, 2016)
This is the second in a series of papers aiming to test how the mass (M-BH), accretion rate (M) over dot and spin (a(*)) of supermassive black holes (SMBHs) determine the observed properties of type I active galactic nuclei ...
X-ray emission cross sections following charge exchange by multiply charged ions of astrophysical interest
(American Physical Society, 2006-02)
State selective nl -electron capture cross sections are presented for highly charged ions with Z=6-10 colliding with atoms and molecules. The energy range investigated was from 1 eV/amu (v=0.006 a.u.) to 100 keV/amu (v=2.0 ...
A distributed-parameters transmission line model developed directly in the phase domain
(2013-08-18)
This article shows a transmission line model developed directly in the phase domain. The proposed model is based on the relationships between the phase currents and voltages at both the sending and receiving ends of a ...
A distributed-parameters transmission line model developed directly in the phase domain
(2013-08-18)
This article shows a transmission line model developed directly in the phase domain. The proposed model is based on the relationships between the phase currents and voltages at both the sending and receiving ends of a ...
Extended Lyα emission around quasars with eclipsing damped Lyα systems
(2016)
We present spectroscopic observations of six high redshift (z(em) > 2) quasars, which have been selected for their Lyman alpha (Ly alpha) emission region being only partially covered by a strong proximate (z(abs) similar ...
Evaluation of the use of multiple lines for determination of metals in water by inductively coupled plasma optical emission spectrometry with axial viewing
(PERGAMON-ELSEVIER SCIENCE LTD, 2009)
Inductively coupled plasma optical emission spectrometers (ICP DES) allow fast simultaneous measurements of several spectral lines for multiple elements. The combination of signal intensities of two or more emission lines ...
Discovery of Raman-scattered lines in the massive luminous emission-line star LHA 115-S 18
(Oxford Journals, 2012)