Now showing items 118-137 of 886

    • Daily Precipitation Generation using a Hidden Markov Model with Correlated Emissions for the Potomac River Basin 

      Kroiz, Gerson C.; Majumder, Reetam; Gobbert, Matthias K.; Neerchal, Nagaraj K.; Markert, Kel; Mehta, Amita (UMBC, 2020-06-30)
      A daily precipitation generator based on a hidden Markov model with Gaussian copulas (HMM-GC) is constructed using remote sensing data from GPM-IMERG for the Potomac river basin on the East Coast of the USA. Daily ...
    • The dark knight falters 

      Mirabal, N. (Oxford University Press, 2013-02-11)
      Tentative line emission at 111 and 129 GeV from 16 unassociated Fermi-LAT point sources has been reported recently by Su and Finkbeiner. Together with similar features seen by Fermi in a region near the Galactic Centre, ...
    • Dark matter and fundamental physics with the Cherenkov Telescope Array 

      Doro, M.; Conrad, J.; Emmanoulopoulos, D.; Sànchez-Conde, M.A.; Barrio, J.A.; Birsin, E.; Bolmont, J.; Brun, P.; Colafrancesco, S.; Connell, S.H.; Contreras, J.L.; Daniel, M.K.; Fornasa, M.; Gaug, M.; Glicenstein, J.F.; González-Muñoz, A.; Hassan, T.; Horns, D.; Jacholkowska, A.; Jahn, C.; Mazini, R.; Mirabal, N.; Moralejo, A.; Moulin, E.; Nieto, D.; Ripken, J.; Sandaker, H.; Schwanke, U.; Spengler, G.; Stamerra, A.; Viana, A.; Zechlin, H.-S.; Zimmer, S. (Elsevier, 2012-08-25)
      The Cherenkov Telescope Array (CTA) is a project for a next-generation observatory for very high energy (GeV–TeV) ground-based gamma-ray astronomy, currently in its design phase, and foreseen to be operative a few years ...
    • Dark matter versus pulsars: catching the impostor 

      Mirabal, N. (Oxford Academic, 2013-10-08)
      Evidence of excess GeV emission nearly coinciding with the Galactic Centre has been interpreted as a possible signature of annihilating dark matter. In this paper, we argue that it seems too early to discard pulsars as a ...
    • DATA YIELD OF THE ILRS GLOBAL NETWORK OVER THE PAST DECADE 

      Pavlis, E. C. (NASA, 2004-06)
      We present an analysis of the data yield history of the ILRS Global Network. Variations due to seasonal, weekly and anthropogenic effects will be evaluated and quantified. The data from only the two LAGEOS satellites are ...
    • Decadal changes in summertime reactive oxidized nitrogen and surface ozone over the Southeast United States 

      Li, Jingyi; Mao, Jingqiu; Fiore, Arlene M.; Cohen, Ronald C.; Crounse, John D.; Teng, Alex P.; Wennberg, Paul O.; Lee, Ben H.; Lopez-Hilfiker, Felipe D.; Thornton, Joel A.; Peischl, Jeff; Pollack, Ilana B.; Ryerson, Thomas B.; Veres, Patrick; Roberts, James M.; Neuman, J. Andrew; Nowak, John B.; Wolfe, Glenn M.; Hanisco, Thomas F.; Fried, Alan; Singh, Hanwant B.; Dibb, Jack; Paulot, Fabien; Horowitz, Larry W. (Copernicus Publications, 2018-02-16)
      Widespread efforts to abate ozone (O₃) smog have significantly reduced emissions of nitrogen oxides (NOx) over the past 2 decades in the Southeast US, a place heavily influenced by both anthropogenic and biogenic emissions. ...
    • A Decade of Gamma-Ray Bursts Observed by Fermi-LAT: The Second GRB Catalog 

      Ajello, M.; Arimoto, M.; Axelsson, M.; Baldini, L.; Barbiellini, G.; Bastieri, D.; Bellazzini, R.; Bhat, P. N.; Bissaldi, E.; Blandford, R. D.; Bonino, R.; Bonnell, J.; Bottacini, E.; Bregeon, J.; Bruel, P.; Buehler, R.; Cameron, R. A.; Caputo, R.; Caraveo, P. A.; Cavazzuti, E.; Chen, S.; Cheung, C. C.; Chiaro, G.; Ciprini, S.; Costantin, D.; Crnogorcevic, M.; Cutini, S.; Dainotti, M.; D’Ammando, F.; Luque, P. de la Torre; Palma, F. de; Desai, A.; Desiante, R.; Lalla, N. Di; Venere, L. Di; Dirirsa, F. Fana; Fegan, S. J.; Franckowiak, A.; Fukazawa, Y.; Funk, S.; Fusco, P.; Gargano, F.; Gasparrini, D.; Giglietto, N.; Giordano, F.; Giroletti, M.; Green, D.; Grenier, I. A.; Grove, J. E.; Guiriec, S.; Hays, E.; Hewitt, J. W.; Horan, D.; Jóhannesson, G.; Kocevski, D.; Kuss, M.; Latronico, L.; Li, J.; Longo, F.; Loparco, F.; Lovellette, M. N.; Lubrano, P.; Maldera, S.; Manfreda, A.; Martí-Devesa, G.; Mazziotta, M. N.; Mereu, I.; Meyer, M.; Michelson, P. F.; Mirabal, N.; Mitthumsiri, W.; Mizuno, T.; Monzani, M. E.; Moretti, E.; Morselli, A.; Moskalenko, I. V.; Negro, M.; Nuss, E.; Ohno, M.; Omodei, N.; Orienti, M.; Orlando, E.; Palatiello, M.; Paliya, V. S.; Paneque, D.; Persic, M.; Pesce-Rollins, M.; Petrosian, V.; Piron, F.; Poolakkil, S.; Poon, H.; Porter, T. A.; Principe, G.; Racusin, J. L.; Rainò, S.; Rando, R.; Razzano, M.; Razzaque, S.; Reimer, A.; Reimer, O.; Reposeur, T.; Ryde, F.; Serini, D.; Sgrò, C.; Siskind, E. J.; Sonbas, E.; Spandre, G.; Spinelli, P.; Suson, D. J.; Tajima, H.; Takahashi, M.; Tak, D.; Thayer, J. B.; Torres, D. F.; Troja, E.; Valverde, J.; Veres, P.; Vianello, G.; Kienlin, A. von; Wood, K.; Yassine, M.; Zhu, S.; Zimmer, S. (The American Astronomical Society, 2019-06-10)
      The Large Area Telescope (LAT) aboard the Fermi spacecraft routinely observes high-energy emission from gamma-ray bursts (GRBs). Here we present the second catalog of LAT-detected GRBs, covering the first 10 yr of operations, ...
    • Deconstructing the Affirmative Action Categories 

      La Noue, George R.; Sullivan, John C. (SAGE, 1998-04-01)
      Affirmative action preferences have traditionally benefited four racial and ethnic group categories: African Americans, Hispanics, Asian Americans, and Native Americans. These categories may be overinclusive, masking ...
    • A Deep Learning Model for Detecting Dust in Earth's Atmosphere from Satellite Remote Sensing Data 

      Hou, Ping; Guo, Pei; Wu, Peng; Wang, Jianwu; Gangopadhyay, Aryya; Zhang, Zhibo (IEEE, 2020-11-06)
      In this paper we develop a deep learning model to distinguish dust from cloud and surface using satellite remote sensing image data. The occurrence of dust storms is increasing along with global climate change, especially ...
    • Demonstration of entanglement assisted invariance on IBM’s quantum experience 

      Deffner, Sebastian (Cell Press, 2017-11-03)
      Quantum entanglement is among the most fundamental, yet from classical intuition also most surprising properties of the fully quantum nature of physical reality. We report several experiments performed on IBM's Quantum ...
    • Demonstration of feed-forward control for linear optics quantum computation 

      Pittman, T.B.; Jacobs, B. C.; Franson, J.D. (American Physical Society (APS), 2002-11-14)
      One of the main requirements in linear optics quantum computing is the ability to perform single-qubit operations that are controlled by classical information fed forward from the output of single-photon detectors. These ...
    • Demonstration of Fine-Pitch High-Resolution X-ray Transition-Edge Sensor Microcalorimeters Optimized for Energies below 1 keV 

      Sakai, K.; Adams, J. S.; Bandler, S. R.; Beaumont, S.; Chervenak, J. A.; Datesman, A. M.; Finkbeiner, F. M.; Kelley, R. L.; Kilbourne, C. A.; Miniussi, A. R.; Porter, F. S.; Sadleir, J. E.; Smith, S. J.; Wakeham, N. A.; Wassell, E. J.; Jaeckel, F. T.; McCammon, D.; Eckart, M. E.; Ryu, K. (Springer Nature Switzerland AG., 2020-03-07)
      In this paper, we report on X-ray transition-edge sensor (TES) microcalorimeters optimized to have the best possible energy resolution for a limited energy range for the incoming X-rays, such as an energy resolution of 0.3 ...
    • Demonstration of Nondeterministic Quantum Logic Operations Using Linear Optical Elements 

      Pittman, T. P.; Jacobs, B. C.; Franson, J.D. (American Physical Society (APS), 2002-06-06)
      Knill, Laflamme, and Milburn [Nature (London) 409, 46 (2001)] recently showed that nondeterministic quantum logic operations could be performed using linear optical elements, additional photons (ancilla), and postselection ...
    • Demonstration of quantum error correction using linear optics 

      Pittman, T.B.; Jacobs, B. C.; Franson, J.D. (American Physical Society (APS), 2005-05-31)
      We describe a laboratory demonstration of a quantum error correction procedure that can correct intrinsic measurement errors in linear-optics quantum gates. The procedure involves a two-qubit encoding and fast feed-forwa ...
    • Design concepts for the Cherenkov Telescope Array CTA: an advanced facility for ground-based high-energy gamma-ray astronomy 

      Mirabal, N.; et al. (Springer Nature, 2011-11-23)
      Ground-based gamma-ray astronomy has had a major breakthrough with the impressive results obtained using systems of imaging atmospheric Cherenkov telescopes. Ground-based gamma-ray astronomy has a huge potential in ...
    • Designing the Next Generation Global Geodetic Networks to support GGOS 

      Pavlis, Erricos C.; Ries, J. C.; MacMillan, D. S.; Kuzmicz-Cieslak, M.; Ma, C.; Rowlands, D. D. (International Association of Geodesy, 2007-11-05)
    • The Detailed Optical Light Curve of GRB 030329 

      Lipkin, Y. M.; Ofek, E. O.; Gal-Yam, A.; Leibowitz, E. M.; Poznanski, D.; Kaspi, S.; Polishook, D.; Kulkarni, S. R.; Fox, D. W.; Berger, E.; Mirabal, N.; Halpern, J.; Bureau, M.; Fathi, K.; Price, P. A.; Peterson, B. A.; Frebel, A.; Schmidt, B.; Orosz, J. A.; Fitzgerald, J. B.; Bloom, J. S.; Dokkum, P. G. van; Bailyn, C. D.; Buxton, M. M.; Barsony, M. (IOP, 2004-01-19)
      We present densely sampled BVRI light curves of the optical transient associated with the gamma-ray burst (GRB) 030329, the result of a coordinated observing campaign conducted at five observatories. Augmented with published ...
    • Detectability of Habitability Signatures on TRAPPIST-1e with Current and Future Ground- and Space-Based Observatories 

      Pidhorodetska, Daria; Fauchez, Thomas; Villanueva, Geronimo; Domagal-Goldman, Shawn (Copernicus, 2019-09-19)
    • Detectability of Molecular Signatures on TRAPPIST-1e through Transmission Spectroscopy Simulated for Future Space-based Observatories 

      Pidhorodetska, Daria; Fauchez, Thomas J.; Villanueva, Geronimo L.; Domagal-Goldman, Shawn D.; Kopparapu, Ravi K. (IOP Publishing, 2020-07-28)
      Discoveries of terrestrial, Earth-sized exoplanets that lie within the habitable zone (HZ) of their host stars continue to occur at increasing rates. Transit spectroscopy can potentially enable the detection of molecular ...
    • Detection of a Gamma-Ray Flare from the High-redshift Blazar DA 193 

      Paliya, Vaidehi S.; Ajello, M.; Ojha, R.; Angioni, R.; Cheung, C. C.; Tanada, K.; Pursimo, T.; Galindo, P.; Losada, I. R.; Siltala, L.; Djupvik, A. A.; Marcotulli, L.; Hartmann, D. (IOP, 2019-02-01)
      High-redshift (z > 2) blazars are the most powerful members of the blazar family. Yet, only a handful of them have both X-ray and γ-ray detection, thereby making it difficult to characterize the energetics of the most ...