Browsing Ohio State University Research and Scholarship by Title
Now showing results 522541 of 832

[O II] line ratios
Nahar, Sultana Nurun; Pradhan, Anil K.; Montenegro, Maximiliano; Eissner, Werner ( 2006 )Based on new calculations, we reconfirm the low and highdensity limits on the forbidden finestructure line intensity ratio [O II] I(3729)/I(3726) : lim_N_0 → 0 = 1.5 and lim_N_0 → ∞ = 0.35. Employing [O II] collision ... 
Observational limits on patchy reionization: Implications for B modes
Mortonson, Michael J.; Hu, Wayne ( 20100326 )The recent detection of secondary CMB anisotropy by the South Pole Telescope limits temperature fluctuations from the optical depthmodulated Doppler effect to T_3000 < √13μK at multipoles ℓ ∼ 3000. This bound is the first ... 
Oligonucleotide array discovery of polymorphisms in cultivated tomato (Solanum lycopersicum L.) reveals patterns of SNP variation associated with breeding
Sim, SungChur; Robbins, Matthew D.; Chilcott, Charles; Zhu, Tong; Francis, David M. ( 20091009 )Background: Cultivated tomato (Solanum lycopersicum L.) has narrow genetic diversity that makes it difficult to identify polymorphisms between elite germplasm. We explored arraybased single feature polymorphism (SFP) ... 
On a theorem of Brauer and Wielandt
Harada, Koichiro ( 2008 )A classical theorem of Brauer and Wielandt which states the result under the assumption G = [G, G] is extended to all finite groups. 
On modeling locus heterogeneity using mixture distributions
Lin, Shili; Biswas, Swati ( 20040930 )Background: Locus heterogeneity poses a major difficulty in mapping genes that influence complex genetic traits. A widely used approach to deal with this problem involves modeling linkage data in terms of finite mixture ... 
On the importance of satellite lines to the heliumlike Kα complex and the G ratio for calcium, iron and nickel
Nahar, Sultana Nurun; Oelgoetz, J.; Fontes, C. J.; Zhang, H. L.; Pradhan, A. K. ( 200904 )New, more detailed calculations of the emission spectra of the Helike Kα complex of calcium, iron and nickel have been carried out using data from both distortedwave and Rmatrix calculations. The value of the GD ratio ... 
On the MasstoLight Ratio of LargeScale Structure
Tinker, Jeremy L.; Weinberg, David H.; Zheng, Zheng; Zehavi, Idit ( 20050920 )We examine the dependence of the masstolight (M/L) ratio of largescale structure on cosmological parameters, in models that are constrained to match observations of the projected galaxy correlation function w_p(r_p) and ... 
On the nonvanishing of the central value of the RankinSelberg Lfunctions
Ginzburg, David; Jiang, Dihua; Rallis, Stephen ( 2004 ) 
On the origins of arrestin and rhodopsin
Alvarez, Carlos E. ( 20080729 )Background: G protein coupled receptors (GPCRs) are the most numerous proteins in mammalian genomes, and the most common targets of clinical drugs. However, their evolution remains enigmatic. GPCRs are intimately ... 
On the Radiative Efficiencies, Eddington Ratios, and Duty Cycles of Luminous HighRedshift Quasars
Shankar, Francesco; Crocce, Martin; MiraldaEscudé, Jordi; Fosalba, Pablo; Weinberg, David H. ( 20100720 )We investigate the characteristic radiative efficiency ε, Eddington ratio λ, and duty cycle P0 of highredshift active galactic nuclei (AGNs), drawing on measurements of the AGN luminosity function at z = 3–6 and, especially, ... 
On the Variation of Deuterium and Oxygen Abundances in the Local Interstellar Medium
Steigman, Gary ( 20030401 )The first observations of deuterium and oxygen in the local interstellar medium (LISM) obtained with the Far Ultraviolet Spectroscopic Explorer (FUSE) can be used to search for local abundance variations. While the very ... 
Operator evolution via the similarity renormalization group: The deuteron
Anderson, E. R.; Bogner, S. K.; Furnstahl, R. J.; Perry, R. J. ( 20101103 )Similarity renormalization group (SRG) flow equations can be used to unitarily soften nuclear Hamiltonians by decoupling highenergy intermediatestate contributions to lowenergy observables while maintaining the natural ... 
An Opposed Jet, Process Flow Geometry: ThreeDimensional Experimental Results and Simulation for Verification
Brodkey, Robert S.; Nilsen, Matt; Yusuf, Abdullahi; Brown, Alex; Garcia, Miguel; Kiprovska, Anita; Knight, James; Lynch, Elizabeth; Yang, Thomas; Zhao, Yang; Nakamura, Shoichiro ( 20131018 )Experiments and computations were made using an opposed jet mixer. The experiments provided timeresolved, fully 3dimensional velocity vector data of low resolution. Initial velocities for the computation were all zero. ... 
Optical Continuum and EmissionLine Variability of Seyfert 1 Galaxies
Peterson, Bradley M.; Wanders, Ignaz; Bertram, Ray; Hunley, James F.; Pogge, Richard W.; Wagner, R. Mark ( 19980701 )We present the light curves obtained during an 8 yr program of optical spectroscopic monitoring of nine Seyfert 1 galaxies: 3C 120, Akn 120, Mrk 79, Mrk 110, Mrk 335, Mrk 509, Mrk 590, Mrk 704, and Mrk 817. All objects ... 
Optimal Microlensing Observations
Gould, Andrew ( 19990601 )One of the major limitations of microlensing observations toward the Large Magellanic Cloud (LMC) is the low rate of event detection. What can be done to improve this rate? Is it better to invest telescope time in more ... 
Orbit of the diagonal in the power of a nilmanifold
Leibman, A. ( 201003 )Let X be a nilmanifold, that is, a compact is, a compact homogeneous space of a nilpotent Lie group G, and let a is an element of G. We study the closure of the orbit of the diagonal of Xr under the action (a(p1(n)),..., ... 
Oscillator strengths and radiative transition rates for Kα lines in gold Xray spectra: 1s2p transitions
Nahar, Sultana Nurun; Pradhan, Anil K.; Sur, Chiranjib ( 2008 )Oscillator strengths (ƒ), line strengths (S) and radiative decay rates (A) are presented for all 1s2p transitions in gold (Au) ions. Xray emission from gold is extensively used, such as in fusion experiments, and in ... 
Oscillator strengths and transition probabilities of O II
Nahar, Sultana Nurun ( 201008 ) 
Oscillator strengths for dipoleallowed finestructure transitions in Fe XIII
Nahar, Sultana Nurun ( 1999 )Oscillator strengths, line strengths, and transition probabilities for finestructure levels in siliconlike iron, Fe XIII, are reported. The data obtained are for 1223 LS bound terms, 64,456 LS multiplets, and 307,863 ... 
Oscillator strengths for dipoleallowed finestructure transitions in Si II
Nahar, Sultana Nurun ( 1998 )An extensive dataset of oscillator strengths, line strengths, and Einstein Acoefficients has been calculated for a large number of dipoleallowed (ΔS=0) finestructure transitions in Si II. The line strengths in LS coupling ...