Dust-driven wind as a model of broad absorption line quasars
Astronomy & Astrophysics, 2023 Context. We test the scenario according to which the broad absorption line (BAL) phenomenon in quasars (QSOs) is not a temporary stage of their life. In this scenario, the BAL effect acts only if the line of sight is within a spatially limited and collimated massive outflow cone covering only a fraction of the sky from the point of view of the nucleus.
Naddaf Moghaddam, Mohammad Hassan +5 more
openaire +3 more sources
VLT+UVES spectroscopy of the Ca II low-ionization broad absorption line quasar SDSS J030000.56+004828.0 [PDF]
, 2003 We study high-resolution spectra of the "overlapping-trough'' low-ionization broad absorption line (LoBAL) quasar SDSS J030000.56+004828.0. The Ca II, Mg II, and Mg I column densities in this object are the largest reported to date for any BAL outflow ...
Fan, XO +6 more
core +2 more sources
OUTFLOW AND HOT DUST EMISSION IN BROAD ABSORPTION LINE QUASARS [PDF]
The Astrophysical Journal, 2014 16 pages, 10 figures, 2 tables; Accepted for publication in The Astrophysical ...
Zhang, Shaohua +6 more
openaire +2 more sources
Microlensing constraints on broad absorption and emission line flows in the quasar H1413+117 [PDF]
, 2015 We present new integral field spectroscopy of the gravitationally lensed broad absorption line (BAL) quasar H1413+117, covering the ultraviolet restframe spectral range.
O'Dowd, MJ +4 more
core +1 more source
Microlensing in H1413+117: disentangling line profile emission and absorption in a broad absorption line quasar [PDF]
, 2010 peer reviewedOn the basis of 16 years of spectroscopic observations of the four components of the gravitationally lensed broad absorption line (BAL) quasar H1413+117, covering the ultraviolet to visible rest-frame spectral range, we analyze the spectral ...
B. Borguet +9 more
core +1 more source
Impact of Radio-mode Feedback on the Covering Fraction of the Circumgalactic Medium of Quasars
The Astrophysical JournalUtilizing data from the Low-Frequency Array Two-meter Sky Survey and the Sloan Digital Sky Survey, we assemble a sample of 1469 projected quasar pairs with detected radio emissions from foreground quasars, as well as a control sample of 5846 pairs ...
Wen-Qiang Liang +4 more
doaj +1 more source
The compact structure of radio-loud broad absorption line quasars [PDF]
Monthly Notices of the Royal Astronomical Society, 2008 16 pages, 3 figures, 4 tables; accepted for publication in ...
Liu, Y. +3 more
openaire +2 more sources
Material Strategies for Stimulation and Recording in Neural Biocomputing Platforms
Advanced Electronic Materials, EarlyView.Material strategies enabling stimulation and recording are central to neural biocomputing systems. This review examines how electronic materials govern the encoding of inputs and decoding of outputs in living neural networks. Advances in electrical, optical, and multimodal interfaces highlight emerging design principles for biocomputing platforms ...
Sehong Kang +5 more
wiley +1 more source
THE DISAPPEARANCE OF A NARROW Mg II ABSORPTION SYSTEM IN QUASAR SDSS J165501.31+260517.4
, 2013 In this paper, we present for the first time the discovery of the disappearance of a narrow Mg II lambda lambda 2796, 2803 absorption system from the spectra of the quasar SDSS J165501.31+260517.4 (z(e) = 1.8671).
Chen, Zhi-Fu, Qin, Yi-Ping, Gu, Min-Feng
core +1 more source
The Astrophysical JournalThis study presents a detailed investigation of the broad absorption line (BAL) systems in the quasar SDSS J004613.54+010425.7 (hereafter J0046+0104), which makes characters of the simultaneous existence of line-locking and velocity shift signatures ...
Wei-Jian Lu, Ying-Ru Lin
doaj +1 more source