Results 41 to 50 of about 1,317 (190)
Acceleration of C iv and Si iv Broad Absorption Lines in Quasar SDSS J140058.79+260619.4
The Astronomical JournalWe report the discovery of a velocity shift signature in the C iv and Si iv broad absorption lines (BALs) of the quasar SDSS J140058.79+260619.4 ( z _em = 2.351). From its two-epoch spectra, we find two BAL systems (systems A and B) in C iv and/or Si iv
Ying-Ru Lin, Wei-Jian Lu
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Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 3, March 2026.Abstract Organic matter in carbonate rocks plays a crucial role in processes such as fluid flow regulation, carbon sequestration, contaminant transport, and hydrocarbon recovery. This study employed multimodal spectroscopic techniques, including fluorescence imaging and Fourier transform infrared (FTIR) spectroscopy, to characterize the spatial ...
Alicia Moya +9 more
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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
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Discovery of Hydrogen Radio Recombination Lines at z = 0.89 toward PKS 1830-211
The Astrophysical Journal, 2023 We report the detection of stimulated hydrogen radio recombination line (RRL) emission from ionized gas in a z = 0.89 galaxy using 580–1670 MHz observations from the MeerKAT Absorption Line Survey.
Kimberly L. Emig +16 more
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Formation of Condition‐Dependent Alpha‐Synuclein Fibril Strain in Artificial Cerebrospinal Fluid
Advanced Science, Volume 13, Issue 7, 3 February 2026.α‐synuclein aggregation in artificial cerebrospinal fluid (aCSF) leads to a distinct conformation with an electron density pocket motif found in aggregates from PD and MSA patients. Such fibrils has low stability outside the reaction conditions, hinting about the influence of cerebrospinal fluid components not only on the formation, but also on the ...
Rūta Sniečkutė +7 more
wiley +1 more source
DISCOVERY OF BROAD SOFT X-RAY ABSORPTION LINES FROM THE QUASAR WIND IN PDS 456 [PDF]
, 2016 High-resolution soft X-ray spectroscopy of the prototype accretion disk wind quasar, PDS 456, is presented. Here, the XMM-Newton reflection grating spectrometer spectra are analyzed from the large 2013–2014 XMM-Newton campaign, consisting of five ...
J. Reeves +7 more
semanticscholar +1 more source
The Astrophysical JournalWe present an analysis of the coordinated velocity shifts observed in multiple C iv and Si iv broad absorption lines (BALs) in the quasar SDSS J113048.45+225206.6.
Wei-Jian Lu, Ying-Ru Lin
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Aggregate, Volume 7, Issue 2, February 2026.The integration of metal nanoclusters (MNCs) with reticular frameworks (RFs) has recently emerged as a powerful strategy to create composite materials with enhanced and synergistic functionalities. This review provides an overview of the synthetic strategies developed for constructing MNCs/RFs composites and their recent advances in biomedical ...
Wenfeng Liu +3 more
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Keck High Resolution Spectroscopy of PKS 0123+257: Intrinsic Absorption in a Radio-Loud Quasar [PDF]
, 1996 We present results from Keck I high resolution spectroscopy of the radio loud quasar PKS 0123+257 ($z_e$=2.364, V=17.5). In this object we detect Ly$\alpha$, N V 1238,1242, Si IV 1393,1402, and C IV 1548,1550 in an absorption system at a redshift of 2 ...
Tom A. Barlow, W. Sargent
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Tracking Outflow Using Line Locking (TOLL). I. The Case Study of Quasar J221531-174408
The Astrophysical JournalInvestigating line-locked phenomena within quasars is crucial for understanding the dynamics of quasar outflows, the role of radiation pressure in astrophysical flows, and the star formation history and metallicity of the early Universe.
Chen Chen +4 more
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