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

Now showing items 55-74 of 853

Calibration of Magnetic Force Microscopy using Micron Size Straight Current Wires

Mankey, Gary (2002-05-13)

A circuit with two long parallel micron size wires was fabricated by photolithography to calibrate magnetic force microscopy (MFM) tips. The tip phase shift increased as the tip scan height decreased. With the tip scan ...
Can Classical Wormholes Stabilize the Brane-anti-brane System?

Pinzul, A.; Stern, Allen (Elsevier, 2004-01-05)

We investigate the static solutions of Callan and Maldecena and Gibbons to lowest order Dirac–Born–Infeld theory. Among them are charged wormhole solutions connecting branes to anti-branes. It is seen that there are no ...
Can WIMP Dark Matter Overcome the Nightmare Scenario?

Okada, Nobuchika (2010-09-29)

Even if new physics beyond the standard model indeed exists, the energy scale of new physics might be beyond the reach at the Large Hadron Collider (LHC), and the LHC could find only the Higgs boson but nothing else. This ...
Canonical Quantization of Chiral Bosons

Stern, Allen (American Physical Society, 1989-04-17)

We perform the canonical quantization for a system of non-Abelian chiral bosons. We show that unlike in the Wess-Zumino-Witten model, the left- and right-handed current densities do not simultaneously span Kac-Moody algebras ...
Capturing the Fire: Flame Energetics and Neutronization For Type Ia Supernova Simulations

Calder, A. C.; Townsley, D. M.; Seitenzahl, I. R.; Peng, F.; Messer, O. E. B.; Vladimirova, N.; Brown, E. F.; Truran, J. W.; Lamb, D. Q. (2007-02-10)

We develop and calibrate a realistic model flame for hydrodynamic simulations of deflagrations in white dwarf (Type Ia) supernovae. Our flame model builds on the advection-diffusion-reaction model of Khokhlov and ...
Cataclysmic Variable Primary Effective Temperatures: Constraints on Binary Angular Momentum Loss

Townsley, Dean M.; Gänsicke, Boris T. (2009-03-01)
The Catalog of Southern Ringed Galaxies

Buta, Ronald J. (1995-01)

The Catalog of Southern Ringed Galaxies (CSRG) is a comprehensive compilation of diameters, axis ratios, relative bar position angles, and morphologies of inner and outer rings, pseudorings, and lenses in 3692 galaxies ...
Chandra Observation of Diffuse Gas and Low-Mass X-Ray Binaries in the Elliptical Galaxy NGC 4649 (M60)

Randall, Scott W.; Sarazin, Craig L.; Irwin, Jimmy A. (2004-01-10)
Chandra Observations of Galaxy Zoo Mergers: Frequency of Binary Active Nuclei in Massive Mergers

Teng, Stacy H.; Schawinski, Kevin; Urry, C. Megan; Darg, Dan W.; Kaviraj, Sugata; Oh, Kyuseok; Bonning, Erin W.; Cardamone, Carolin N.; Keel, William C.; Lintott, Chris J.; Simmons, Brooke D.; Treister, Ezequiel (2012-07-10)
Chandra Observations of Low-Mass X-Ray Binaries and Diffuse Gas in the Early-Type Galaxies NGC 4365 and 4382 (M85)

Sivakoff, Gregory R.; Sarazin, Craig L.; Irwin, Jimmy A. (2003-12-10)
Chandra X-Ray Observations of the X-Ray Faint Elliptical Galaxy NGC 4697

Sarazin, Craig L.; Irwin, Jimmy A.; Bregman, Joel N. (2001-08-01)
Chemical-order-induced Magnetic Exchange Bias in Epitaxial FePt₃ Films

Mankey, Gary (2008-04-11)

We show that magnetic exchange bias can be induced by means of chemical ordering. The effect was observed on epitaxial thin film layers of FePt₃, a material which has the remarkable property that, depending on the degree ...
The Cheshire Cat Gravitational Lens: The Formation of a Massive Fossil Group

Irwin, Jimmy A.; Dupke, Renato; Carrasco, Eleazar R.; Maksym, W. Peter; Johnson, Lucas; White, Raymond E. III (2015-06-20)

The Cheshire Cat is a relatively poor group of galaxies dominated by two luminous elliptical galaxies surrounded by at least four arcs from gravitationally lensed background galaxies that give the system a humorous ...
Circumnuclear Star Formation in the Early-Type Resonance Ring Barred Spiral Galaxy NGC 1326

Buta, Ronald J.; Treuthardt, Patrick M.; Byrd, G. G.; Crocker, D. A. (2000)

We present multiband WFPC2 images of the nuclear ring of NGC 1326, an early-type southern barred spiral in the nearby Fornax galaxy cluster. The ring is a typical example of a 1 kpc–sized star-forming ring located in the ...
The Circumstellar Disk of HD 141569 Imaged with NICMOS

Silverstone, Murray (American Astronomical Society, 1999-10-05)

Coronagraphic imaging with the Near-Infrared Camera and Multiobject Spectrometer on the Hubble Space Telescope reveals a large, ~400 AU (4ˮ) radius, circumstellar disk around the Herbig Ae/Be star HD 141569. A reflected ...
Classical Novae as a Probe of the Cataclysmic Variable Population

Townsley, Dean M.; Bildsten, Lars (2005-07-20)
Classically Conformal B–L Extended Standard Model

Okada, Nobuchika (Elsevier B.V., 2009-06-01)

Under a hypothesis of classically conformal theories, we investigate the minimal B–L extended Standard Model, which naturally provides the seesaw mechanism for explaining tiny neutrino masses. In this setup, the radiative ...
Classically Conformal U(1)′ Extended Standard Model and Higgs Vacuum Stability

Okada, Nobuchika (American Physical Society, 2015-07-27)

We consider the minimal U(1)′ extension of the standard model (SM) with conformal invariance at the classical level, where in addition to the SM particle contents, three generations of right-handed neutrinos and a U(1)′ ...
Classically Conformal U(1)′ Extended Standard Model, Electroweak Vacuum Stability, and LHC Run-2 Bounds

Okada, Nobuchika (American Physical Society, 2016-06-29)

We consider the minimal U(1)′ extension of the standard model (SM) with the classically conformal invariance, where an anomaly-free U(1)′ gauge symmetry is introduced along with three generations of right-handed neutrinos ...
Classifying X-Ray Sources in External Galaxies from X-Ray Colors

Prestwich, A. H.; Irwin, J. A.; Kilgard, R. E.; Krauss, M. I.; Zezas, A.; Primini, F.; Kaaret, P.; Boroson, B. (2003-10-01)

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

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