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19 papers · 1 filter
Observational Signatures of Mass-Loading in Jets Launched by Rotating Black Holes
Michael O' Riordan, Asaf Pe'er, Jonathan C. McKinney
It is widely believed that relativistic jets in X-ray binaries and active-galactic nuclei are powered by the rotational energy of black holes. This idea is supported by general-rel…
Quantum Catcher: Trapping and cooling particles using a moving atom diode and an atomic mirror
Tom Dowdall, Andreas Ruschhaupt
We propose a theoretical scheme for atomic cooling, i.e. the compression of both velocity and position distribution of particles in motion. This is achieved by collisions of the pa…
MASTER OT J132104.04+560957.8: A Polar with Absorption-Emission Line Reversals
Colin Littlefield, Peter Garnavich, Taylor Hoyt +1
We present time-resolved photometry and spectroscopy of the recently classified polar MASTER OT J132104.04+560957.8. The spectrum shows a smooth, non-thermal continuum at the time…
Parsec Scale Faraday-Rotation Structure Across the Jets of 9 Active Galactic Nuclei
Denise C. Gabuzda, Naomi Roche, Amy Kirwan +3
A number of groups have recently been active in searching for gradients in the ob- served Faraday rotation measure (RM) across jets of Active Galactic Nuclei (AGNs) on various scal…
Asymmetric scattering by non-hermitian potentials
A. Ruschhaupt, T. Dowdall, M. A. Simón +1
The scattering of quantum particles by non-hermitian (generally nonlocal) potentials in one dimension may result in asymmetric transmission and/or reflection from left and right in…
Statistical study of stacked/coupled site-controlled pyramidal quantum dots and their excitonic properties
S. T. Moroni, T. H. Chung, G. Juska +2
We report on stacked multiple quantum dots (QDs) formed inside inverted pyramidal recesses, which allow for the precise positioning of the QDs themselves. Specifically we fabricate…