Results 1 to 10 of about 959,794 (167)
Natural line profile asymmetry
Physica Scripta, 2022 Abstract The paper discusses the line profile asymmetry of the photon scattering process that arises naturally in quantum electrodynamics (QED). Based on precision spectroscopic experiments conducted on hydrogen atoms, we focus our attention on the two-photon 1s − 2s transition.
A Anikin, T Zalialiutdinov, D Solovyev
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Line Profile Variations in AGN [PDF]
International Astronomical Union Colloquium, 1994 AbstractLine-profile variations in the Seyfert galaxies NGC 5548 and NGC 4593 are discussed. The variations of individual line segments are different from line to line and from outburst to outburst.
W. Kollatschny, M. Dietrich
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Line Profiles in the Bulge of NGC7217 [PDF]
Symposium - International Astronomical Union, 1993 Line-of-sight velocity distributions are becoming increasingly important for our understanding of galactic structure. We present results obtained for the bulge of NGC7217 with a new deconvolution technique.
Konrad Kuijken, Michael R. Merrifield
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Measurement of Line Profiles [PDF]
Symposium - International Astronomical Union, 1986 The basic requirements for high precision spectral line profile measurements are reviewed, with the observatory at the University of Western Ontario serving to illustrate several of the points.
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Epigenomic profiling of neuroblastoma cell lines [PDF]
Scientific Data, 2020 Abstract Understanding the aberrant transcriptional landscape of neuroblastoma is necessary to provide insight to the underlying influences of the initiation, progression and persistence of this developmental cancer. Here, we present chromatin immunoprecipitation sequencing (ChIP-Seq) data for the oncogenic transcription factors, MYCN
Upton, Kristen +12 more
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CS LINE PROFILES IN HOT CORES [PDF]
The Astrophysical Journal, 2011 We present a theoretical study of CS line profiles in archetypal hot cores. We provide estimates of line fluxes from the CS(1-0) to the CS(15-14) transitions and present the temporal variation of these fluxes. We find that \textit{i)} the CS(1-0) transition is a better tracer of the Envelope of the hot core whereas the higher-J CS lines trace the ultra-
Bayet, E., Yates, J., Viti, S.
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Iron line profiles in strong gravity [PDF]
Monthly Notices of the Royal Astronomical Society, 2004 10 pages, 13 figures, accepted for pulication in MNRAS, major changes to text, structure and figures, version with high resolution figures available from http://star-www.dur.ac.uk/~krcb/ironline ...
Beckwith, Kris, Done, Chris
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Line profiles in expanding atmospheres [PDF]
Symposium - International Astronomical Union, 1994 The analysis of the UV resonance transitions of superionized species observed in early-type stars suggests the presence of a high temperature region and an outward flow of matter (Snow & Marlborough 1976).
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Highlights of Astronomy, 1995 Observed hydrogen line profiles are an enormously important source of diagnostic information about virtually all kinds of astronomical bodies. Therefore, it is important to understand the hydrogen line formation in sufficient detail to be able to achieve a high degree of reliability by analyzing observed hydrogen line profiles.Calculation of the ...
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Line-profile variability of EZ CMa [PDF]
Symposium - International Astronomical Union, 1995 CCD spectra for the unusual Wolf-Rayet star EZ CMa (WR6) are presented. The analysis of the profile changes of HeII lines shows a correlation between the gravity center of the line and the skewness (Robert et al. 1992). The fourth moment (kurtosis) changes with phase and looks epoch independent.
L. Georgiev, M. M. Ivanov
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