Now showing items 447-466 of 971

    • J-PLUS: Two-dimensional analysis of the stellar population in NGC 5473 and NGC 5485 

      Roman, I. San; Sanchez-Blazquez, P.; Cenarro, A. J.; Diaz-Garcia, L. A.; Lopez-Sanjuan, C.; Varela, J.; Vilella-Rojo, G.; Akras, S.; Bonoli, S.; Chies Santos, A. L.; Coelho, P.; Cortesi, A.; Ederoclite, A.; Jiménez-Teja, Y.; Logroño-García, R.; Oliveira, R. Lopes de; Nogueira-Cavalcante, J. P.; Orsi, A.; Ramió, H. Vázquez; Viironen, K.; Cristóbal-Hornillos, D.; Dupke, R.; Marín-Franch, A.; Oliveira, C. Mendes de; Moles, M.; Sodré, L. (ESO, 2019-01-12)
      Context. The spatial variations of stellar population properties within a galaxy are intimately related to their formation process. Therefore, spatially resolved studies of galaxies are essential to uncover their formation ...
    • Janus PtXnY2−n (X, Y = S, Se, Te; 0≤n≤2) Monolayers for Enhanced Photocatalytic Water Splitting 

      Ersan, F.; Ataca, C. (American Physical Society (APS), 2020-06-03)
      We investigate Janus and alloy structures of PtXnY₂₋ₙ (X, Y = S, Se, Te; 0≤n≤2) materials on the basis of first-principles plane-wave simulations. Using cluster-expansion theory to study alloys of PtXnY₂₋ₙ monolayers at ...
    • Jarzynski equality for conditional stochastic work 

      Sone, Akira; Deffner, Sebastian
      It has been established that the inclusive work for classical, Hamiltonian dynamics is equivalent to the two-time energy measurement paradigm in isolated quantum systems. However, a plethora of other notions of quantum ...
    • Jarzynski Equality for Driven Quantum Field Theories 

      Bartolotta, Anthony; Deffner, Sebastian (American Physical Society (APS), 2018-02-27)
      The fluctuation theorems, and in particular, the Jarzynski equality, are the most important pillars of modern nonequilibrium statistical mechanics. We extend the quantum Jarzynski equality together with the two-time ...
    • Jarzynski Equality in PT-Symmetric Quantum Mechanics 

      Deffner, Sebastian; Saxena, Avadh (American Physical Society (APS), 2015-04-13)
      We show that the quantum Jarzynski equality generalizes to PT-symmetric quantum mechanics with unbroken PT symmetry. In the regime of broken PT symmetry, the Jarzynski equality does not hold as also the CPT norm is not ...
    • JASON-1 Absolute Calibration Results from the Eastern Mediterranean GAVDOS Project 

      Pavlis, Erricos C.; Mertikas, S.; The Gavdos Team (AVISO Satellite Altimetry Data, 2007-03-12)
      The Gavdos permanent absolute calibration facility, initially established with joint EU, NASA, and Swiss Federal Government funding in 2002, while fully operational at the moment, it is also being expanded to a regional ...
    • JCET Station Performance Assessment Tools for the ILRS Stations 

      Pavlis, Erricos C.; Kuzmicz-Cieslak, M.; König, Daniel; Evans, K. (National Aeronautics and Space Administration, 2016-10-08)
    • JCET Tools for the Assessment of the ILRS Stations’ Performance 

      Pavlis, Erricos C.; Kuzmicz-Cieslak, M.; Evans, K. (National Aeronautics and Space Administration, 2017-10-02)
    • JCET Web Tools for the Assessment of the ILRS Network's Performance 

      Pavlis, Erricos C.; Kuzmicz-Cieslak, M.; Evans, K.
      We present, discuss and demonstrate webaccessed tools developed at JCET using the products of the ILRS Analysis and Associate Analysis Centers (AC & AAC) to aid stations, missions and analysts assess the performance of the ...
    • JCET’s Daily-updated State-of-the-art SLR-only TRF 

      Pavlis, Erricos C.; Kuzmicz-Cieslak, M.; König, Daniel; Evans, K. (National Aeronautics and Space Administration, 2013-11-13)
    • Jonathan Patrick Dowling in memoriam 

      Franson, James; Wilde, Mark M. (Nature, 2020-08-12)
    • K2 Ultracool Dwarfs Survey – VI. White light superflares observed on an L5 dwarf and flare rates of L dwarfs 

      Paudel, R. R.; Gizis, J. E.; Mullan, D. J.; Schmidt, S. J.; Burgasser, A. J.; Williams, P. K. G. (Oxford University Press, 2020-05-06)
      KeplerK2 long cadence data are used to study white light flares in a sample of 45 L dwarfs. We identified 11 flares on 9 L dwarfs with equivalent durations of (1.3–198) h and total (UV/optical/IR) energies of ≥0.9 × 10³² ...
    • kCARTA : A fast pseudo line-by-line radiative transfer algorithm with analytic Jacobians, fluxes, Non-Local Thermodynamic Equilibrium and scattering for the infrared 

      Machado, Sergio DeSouza; Strow, L. Larrabee; Motteler, Howard; Hannon, Scott (EGU, 2019-08-09)
      A fast pseudo-monochromatic radiative transfer package using a Singular Value Decomposition (SVD) compressed atmospheric optical depth database has been developed, primarily for use with hyperspectral sounding instruments. ...
    • Kibble-Zurek scaling in quantum speed limits for shortcuts to adiabaticity 

      Puebla, Ricardo; Deffner, Sebastian; Campbell, Steve (2020-06-08)
      Geometric quantum speed limits quantify the trade-off between the rate with which quantum states can change and the resources that are expended during the evolution. Counterdiabatic driving is a unique tool from shortcuts ...
    • Kibble-Zurek scaling of the irreversible entropy production 

      Deffner, Sebastian (American Physical Society (APS), 2017-11-16)
      If a system is driven at finite rate through a phase transition by varying an intensive parameter, the order parameter shatters into finite domains. The Kibble-Zurek mechanism predicts the typical size of these domains, ...
    • A Kiloparsec-scale Internal Shock Collision in the Jet of a Nearby Radio Galaxy 

      Meyer, Eileen T.; Georganopoulos, Markos; Sparks, William B.; Perlman, Eric; Marel, Roeland P. van der; Anderson, Jay; Sohn, Sangmo Tony; Biretta, John; Norman, Colin; Chiaberge, Marco (Nature Research, 2015-05-27)
      Jets of highly energized plasma with relativistic velocities are associated with black holes ranging in mass from a few times that of the Sun to the billion-solar-mass black holes at the centres of galaxies. A popular but ...
    • Kiloparsec-scale Jets: Physics, Emission Mechanisms, and Challenges 

      Perlman, Eric S.; Meyer, Eileen; Eilek, Jean; Tchekhovskoy, Sasha; Nyland, Kristina; Agudo, Ivan; Baum, Stefi; Hardcastle, Martin; Kadler, Matthias; Labiano, Alvaro; Marshall, Herman; O’Dea, Christopher; Worrall, Diana (2019-03-08)
      Jets are a ubiquitous part of the accretion process, created in AGN, by a coupling between the magnetic field near the central black hole and inflowing material. We point out what advances can be achieved by new technologies, ...
    • The Knotty Question of the Jet of PKS B1421–490 

      Gelbord, J. M.; Marshall, H. L.; Worrall, D. M.; Birkinshaw, M.; Lovell, J. E. J.; Ojha, R.; Godfrey, L.; Schwartz, D. A.; Perlman, E. S.; Georganopoulos, M.; Murphy, D. W.; Jauncey, D. L. (IOP, 2005-10-04)
      We report the discovery of unusually strong optical and X-ray emission associated with a knot in the radio jet of PKS B1421-490. The knot is the brightest feature observed beyond the radio band, with knot/core flux ratios ...
    • Knowledge graph fact prediction via knowledge-enriched tensor factorization 

      Padia, Ankur; Kalpakis, Konstantinos; Ferraro, Francis; Finin, Tim (Elsevier, 2019-02-15)
      We present a family of novel methods for embedding knowledge graphs into real-valued tensors. These tensor-based embeddings capture the ordered relations that are typical in the knowledge graphs represented by semantic web ...
    • The L 98-59 System: Three Transiting, Terrestrial-size Planets Orbiting a Nearby M Dwarf 

      Barclay, Thomas; Mukai, Koji; Pidhorodetska, Daria; et al. (IOP Publishing, 2019-06-27)
      We report the Transiting Exoplanet Survey Satellite (TESS) discovery of three terrestrial-size planets transiting L 98-59 (TOI-175, TIC 307210830)—a bright M dwarf at a distance of 10.6 pc. Using the Gaia-measured distance ...