Browsing Research and Publications - Department of Physics & Astronomy by Title

Browsing Research and Publications - Department of Physics & Astronomy by Title

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  • Mankey, Gary (1993-10-01)
    We report angle-resolved inverse-photoemission spectroscopy and ultraviolet-photoemissionspectroscopy measurements of the electronic structure of Cu(100), Ni(100), and pseudomorphic films of fee Co and Fe on Cu(100). The ...
  • Treuthardt, P.; Salo, H.; Rautiainen, P.; Buta, R. (American Astronomical Society, 2008-06-11)
    We present detailed numerical simulations of NGC 1433, an intermediate-type barred spiral showing strong morphological features including a secondary bar, nuclear ring, inner ring, outer pseudoring, and two striking, ...
  • Buta, Ronald (2004-12-21)
    Bar-induced perturbation strengths are calculated for a well-defined magnitude-limited sample of 180 spiral galaxies, based on the Ohio State University Bright Galaxy Survey. We use a gravitational torque method, the ratio ...
  • Laurikainen, E.; Salo, H.; Buta, Ronald J.; Knapen, J. H. (2009-01-21)
    The origin of S0 galaxies is discussed in the framework of early mergers in a cold dark matter cosmology, and in a scenario where S0s are assumed to be former spirals stripped of gas. From an analysis of 127 early-type ...
  • Piepke, Andreas (2015-11-30)
    We report a measurement of the neutrino-electron elastic scattering rate of 862 keV ⁷Be solar neutrinos based on a 165.4 kt d exposure of KamLAND. The observed rate is 592 ± 94 (kt d)⁻¹, which corresponds to an 862-keV ⁷Be ...
  • Bimonte, G.; Marmo, G.; Stern, Allen (2000-04-06)
    We construct a deformation of the quantum algebra Fun(T* G). associated with Lie group G to the case where G is replaced by a quantum group Gq which has a bicovariant calculus. The deformation easily allows for the inclusion ...
  • Mankey, Gary (2001-06-07)
    Both normal and inverse magnetoresistance (MR) response curves were observed for synthetic spin valves with the structure of Si(100)/Ru/Co(t₁)/Ru(0.7 nm)/Co(t₂)/Cu(3 nm)/Co(t₃)/Ru. Under the assumption of a coherent rotation ...
  • Irwin, Jimmy A. (2005-09-20)
    Recent Chandra studies of low-mass X-ray binaries (LMXBs) within early-type galaxies have found that LMXBs are commonly located within globular clusters of the galaxies. However, whether all LMXBs are formed within ...
  • Schawinski, Kevin; Urry, C. Megan; Virani, Shanil; Coppi, Paolo; Bamford, Steven P.; Treister, Ezequiel; Lintott, Chris J.; Sarzi, Marc; Keel, William C.; Kaviraj, Sugata; Cardamone, Carolin N.; Masters, Karen L.; Ross, Nicholas P.; Galaxy Zoo Team (2010)
    We use data from large surveys of the local universe (SDSS+Galaxy Zoo) to show that the galaxy–black hole connection is linked to host morphology at a fundamental level. The fraction of early-type galaxies with actively ...
  • Harms, B.; Stern, Allen (1996-09-15)
    We write down a general action principle for spinning strings in (2+1)-dimensional space-time without introducing Grassmann variables. The action is written solely in terms of coordinates taking values in the 2+1 Poincaré ...
  • Okada, Nobuchika (2016-03-10)
    We suggest the so-called bosonic seesaw mechanism in the context of a classically conformal U(1)B−L extension of the Standard Model with two Higgs doublet fields. The U(1)B−L symmetry is radiatively broken via the ...
  • Stern, Allen (Elsevier, 1996-12-23)
    We write down a general geometric action principle for spinning strings in d-dimensional Minkowski space, which is formulated without the use of Grassmann coordinates. Instead, it is constructed in terms of the pull-back ...
  • Okada, Nobuchika (2017-11-10)
    The neutrino masses and flavor mixings, which are missing in the Standard Model (SM), can be naturally incorporated in the type-I seesaw extension of the SM with heavy Majorana neutrinos being singlet under the SM gauge ...
  • Okada, Nobuchika (2005-01-19)
    We investigate the thermal production of gravitinos in the context of the brane world cosmology. Since the expansion law is modified from the one in the standard cosmology, the Boltzmann equation for the gravitino production ...
  • Barth, Aaron J.; Nguyen, My L.; Malkan, Matthew A.; Filippenko, Alexei V.; Li, Weidong; Gorjian, Varoujan; Joner, Michael D.; Bennert, Vardha Nicola; Botyanszki, Janos; Cenko, S. Bradley; Childress, Michael; Choi, Jieun; Comerford, Julia M.; Cucciara, Antonino; Da Silva, Robert; Duchene, Gaspard; Fumagalli, Michele; Ganeshalingam, Mohan; Gates, Elinor L.; Gerke, Brian F.; Griffith, Christopher V.; Harris, Chelsea; Hintz, Eric G.; Hsiao, Eric; Kandrashoff, Michael T.; Keel, William C.; Kirkman, David; Kleiser, Io K. W.; Laney, C. David; Lee, Jeffrey; Lopez, Liliana; Lowe, Thomas B.; Moody, J. Ward; Morton, Alekzandir; Nierenberg, A. M.; Nugent, Peter; Pancoast, Anna; Rex, Jacob; Rich, R. Michael; Silverman, Jeffrey M.; Smith, Graeme H.; Sonnenfield, Alessandro; Suzuki, Nao; Tytler, David; Walsh, Jonelle L.; Woo, Jong-Hak; Yang, Yizhe; Zeisse, Carl (2011-05-10)
  • Mohammadi, Jamileh Beik; Jones, Joshua Michael; Paul, Soumalya; Khodadadi, Behrouz; Mewes, Claudia K. A.; Mewes, Tim; Kaiser, Christian (2017)
    The magnetization dynamics of exchange-biased IrMn/CoFe bilayers have been investigated using broadband and in-plane angle-dependent ferromagnetic resonance spectroscopy. The interface energy of the exchange bias effect ...
  • Stern, Allen (2013-10-30)
    We examine a Chern–Simons matrix model which we propose as a toy model for studying the quantum nature of black holes in 2 + 1 gravity. Its dynamics is described by two N × N matrices, representing the two spatial coordinates. ...
  • Singh, Amit V.; Khodadadi, Behrouz; Mohammadi, Jamileh Beik; Keshavarz, Sahar; Mewes, Tim; Negi, Devendra Singh; Datta, Ranjan; Galazka, Zbigniew; Uecker, Reinhard; Gupta, Arunava (2017)
  • Okada, Nobuchika (2000-09-26)
    We discuss issues in an attempt to put the standard model (SM) in five-dimensional anti–de Sitter spacetime compactified on S¹/Z₂. The recently proposed approach to the gauge hierarchy problem by using this background ...
  • Su, Yuanyuan; Nulsen, Paul E. J.; Kraft, Ralph P.; Forman, William R.; Jones, Christine; Irwin, Jimmy A.; Randall, Scott W.; Churazov, Eugene (2017-10-01)
    The Fornax Cluster is a low-mass cool-core galaxy cluster. We present a deep Chandra study of NGC 1399, the central dominant elliptical galaxy of Fornax. The cluster center harbors two symmetric X-ray cavities coincident with ...

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