Browsing Physics and Astronomy Department by Title
Now showing items 4-23 of 54
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(Astronomical Journal, 2022-12-19)Examination of emission lines in high-velocity-resolution optical spectra of the Orion Nebula confirms that the velocity component on the red wing of the main ionization front emission line is due to backscattering in the ...
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(Vanderbilt University. Dept. of Physics and Astronomy, 2009-04-20)In November 2006, the authors collected data on blazars PKS 0537-441, PKS 0447-439, and PKS 0208-5121 from the Cerra Tololo Inter-American Observatory in Chile. All three blazars are tested for microvariability, first ...
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(Physical Review C, 2019-08-01)The almost hermetic coverage of the CMS detector is used to measure the distribution of transverse energy, E-T, over 13.2 units of pseudorapidity, eta, for pPb collisions at a center-of-mass energy per nucleon pair of root ...
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(EUROPEAN PHYSICAL JOURNAL C, 2019-05-20)Combined measurements of the production and decay rates of the Higgs boson, as well as its couplings to vector bosons and fermions, are presented. The analysis uses the LHC proton-proton collision data set recorded with ...
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Dark Matter benchmark models for early LHC Run-2 Searches: Report of the ATLAS/CMS Dark Matter Forum (Physics of the Dark Universe, 2020-01)This document is the final report of the ATLAS-CMS Dark Matter Forum, a forum organized by the ATLAS and CMS collaborations with the participation of experts on theories of Dark Matter, to select a minimal basis set of ...
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(Vanderbilt University. Dept. of Physics and Astronomy, 2012-04)Cosmic microwave background (CMB) observations suggest the possibility of an extra dark radiation component, while the current evidence from big bang nucleosynthesis (BBN) is more ambiguous. Dark radiation from a decaying ...
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(Vanderbilt University. Dept. of Physics and Astronomy, 2009-04-20)The Compact Muon Solenoid Experiment (CMS) at the Large Hadron Collider (LHC) at CERN has brilliant prospects for uncovering new information about the physical structure of our universe. Soon physicists around the world ...
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(Vanderbilt University. Dept. of Physics and Astronomy, 2010-04)
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(Vanderbilt University. Dept. of Physics and Astronomy, 2011-04)The Pauli Exclusion Principle places a fundamental limit on the brightness of an electron beam. Developing a cathode which can reach this limit is useful for achieving maximum operation in current applications of ...
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(Vanderbilt University. Dept. of Physics and Astronomy, 2010-04)
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(Journal of Instrumentation, 2019-06)An embedding technique is presented to estimate standard model tau tau backgrounds from data with minimal simulation input. In the data, the muons are removed from reconstructed mu mu events and replaced with simulated tau ...
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(Journal of Instrumentation, 2019-06)An embedding technique is presented to estimate standard model tau tau backgrounds from data with minimal simulation input. In the data, the muons are removed from reconstructed mu mu events and replaced with simulated tau ...
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(Vanderbilt University. Dept. of Physics and Astronomy, 2011-04)The study of living specimens is essential to the understanding of organismal behavior. Unfortunately, a major difficulty in the study of live organisms is that many move in and out of the field of view or focal plane ...
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(Vanderbilt University. Dept. of Physics & Astronomy, 2008)During the course of my Honors Research Project, I worked with Dr. David James to determine whether a group of target stars are members of the Local Association. I did this by reducing spectroscopic data, taken by Dr. ...
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(Vanderbilt University. Dept. of Physics and Astronomy, 2011-04)Finite element modeling was performed using COMSOL Multiphysics to study the thermal dynamics of gold::vanadium dioxide (VO$_{2}$) nanocomposites. These simulations were done to understand the data from transient ...
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(ASTRONOMY & ASTROPHYSICS, 2019-07-22)We present an elemental abundance analysis of high-resolution spectra for five giant stars spatially located within the innermost regions of the bulge globular cluster NGC 6522 and derive Fe, Mg, Al, C, N, O, Si, and Ce ...
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(Vanderbilt University. Department of Physics and Astronomy, 2013-04-22)Electron microscopy has been the recent subject of molecular imaging due to the strength of the electrons' interaction with the target molecule making for a detailed pattern at a small scale.[1] To achieve the best 4D ...
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(Astronomical Journal, 2023-02-01)We present high-precision radial velocities (RVs) from the HARPS-N spectrograph for HD79210 and HD79211, two M0V members of a gravitationally-bound binary system. We detect a planet candidate with a period of 24.421(-0.0 ...
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Influence of patient size on dose to female breast tissue during routine computed tomography scans (Vanderbilt University. Dept. of Physics & Astronomy, 2008-04-21)Monte Carlo methods are well suited to the evaluation of radiation transport phenomena. The scalable phantoms employed in this project permitted rapid creation of three models of similar geometry, but different body habitus. ...
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(Vanderbilt University. Dept. of Physics and Astronomy, 2010-04)Enclosed microfluidic devices provide excellent systems for the study of biological processes such as cell-cell, paracrine, and autocrine signaling systems. By minimizing the fluid volume within the chambers, ...