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  • Constraints on Minute-Scale Transient Astrophysical Neutrino Sources 

    Aartsen, M.G.; Besson, David Zeke (American Physical Society, 2019-02-06)
    High-energy neutrino emission has been predicted for several short-lived astrophysical transients including gamma-ray bursts (GRBs), core-collapse supernovae with choked jets, and neutron star mergers. IceCube’s optical ...
  • ‘The Brick’ is not a brick: a comprehensive study of the structure and dynamics of the central molecular zone cloud G0.253+0.016 

    Henshaw, J.D.; Ginsburg, A.; Haworth, T.J.; Longmore, S.N.; Kruijssen, J.M.D.; Mills, Elisabeth; Sokolov, V.; Walker, D.L.; Barnes, A.T.; Contreras, Y.; Bally, J.; Battersby, C.; Beuther, H.; Butterfield, N.; Dale, J.E.; Henning, T.; Jackson, J.M.; Kauffmann, J.; Pillai, T.; Ragan, S.; Riener, M.; Zhang, Q. (Royal Astronomical Society, 2019-02-17)
    In this paper we provide a comprehensive description of the internal dynamics of G0.253+0.016 (a.k.a. ‘the Brick’); one of the most massive and dense molecular clouds in the Galaxy to lack signatures of widespread star ...
  • Interlayer charge transfer in ReS 2 / WS 2 van der Waals heterostructures 

    Zereshki, Peymon; Yao, Peng; He, Dawei; Wang, Yongsheng; Zhao, Hui (American Physical Society, 2019-05-21)
    We observed ultrafast charge transfer between distorted 1T−ReS2 with anisotropic in-plane electronic and optical properties and 2H−WS2 that is in-plane isotropic. Heterostructures of monolayer ReS2/monolayer WS2 and bilayer ...
  • Young massive star cluster formation in the Galactic Centre is driven by global gravitational collapse of high-mass molecular clouds 

    Barnes, A. T.; Longmore, S. N.; Avison, A.; Contreras, Y.; Ginsburg, A.; Henshaw, J. D.; Rathborne, J. M.; Walker, D. L.; Alves, J.; Bally, J.; Battersby, C.; Beltrán, M. T.; Beuther, H.; Garay, G.; Gomez, L.; Jackson, J.; Kainulainen, J.; Kruijssen, J. M. D.; Lu, X.; Mills, Elisabeth; Ott, J.; Peters, T. (Royal Astronomical Society, 2019-03-19)
    Young massive clusters (YMCs) are the most compact, high-mass stellar systems still forming at the present day. The precursor clouds to such systems are, however, rare due to their large initial gas mass reservoirs and ...
  • Limitations of In2O3 as a transparent conducting oxide 

    Peelaers, Hartwin; Kioupakis, E.; Van de Walle, C. G. (American Institute of Physics, 2019-08-23)
    Sn-doped In2O3 or ITO is the most widely used transparent conducting oxide. We use first-principles calculations to investigate the limitations to its transparency due to free-carrier absorption mediated by phonons or ...
  • Constraints on the ultrahigh-energy cosmic neutrino flux from the fourth flight of ANITA 

    Gorham, P.  W.; Besson, David Zeke; ANITA Collaboration (American Physical Society, 2019-06-11)
    The ANtarctic Impulsive Transient Antenna (ANITA) NASA long-duration balloon payload completed its fourth flight in December 2016, after 28 days of flight time. ANITA is sensitive to impulsive broadband radio emission from ...
  • Comprehensive analysis of anomalous ANITA events disfavors a diffuse tau-neutrino flux origin 

    Romero-Wolf, A.; Besson, David Zeke (American Physical Society, 2019-03-18)
    Recently, the ANITA collaboration reported on two upward-going extensive air shower events consistent with a primary particle that emerges from the surface of the Antarctic ice sheet. These events may be of ντ origin, in ...
  • Cosmic ray spectrum and composition from PeV to EeV using 3 years of data from IceTop and IceCube 

    Aartsen, M. G.; Besson, David Zeke; IceCube Collaboration (American Physical Society, 2019-10-23)
    We report on measurements of the all-particle cosmic ray energy spectrum and composition in the PeV to EeV energy range using 3 years of data from the IceCube Neutrino Observatory. The IceTop detector measures cosmic ray ...
  • First-principles study of electron-phonon interactions and transport in anatase TiO2 

    Kang, Youngho; Peelaers, Hartwin; Van de Walle, Chris G. (American Physical Society, 2019-09-30)
    Electron transport in anatase TiO2, which has important applications in oxide electronics and photocatalysis, is still poorly understood. We investigate the electron mobility in anatase TiO2 by performing first-principles ...
  • Phonon- and charged-impurity-assisted indirect free-carrier absorption in Ga2O3 

    Peelaers, Hartwin; Van de Walle, Chris G. (American Physical Society, 2019-08-05)
    Monoclinic β−Ga2O3 has a large band gap of 4.8 eV, and can therefore be used as a contact material that is transparent to visible and UV light. However, indirect free-carrier absorption processes, mediated by either phonons ...
  • The dynamical evolution of molecular clouds near the Galactic Centre – II. Spatial structure and kinematics of simulated clouds 

    Kruijssen, J. M. D.; Dale, J. E.; Longmore, S. N.; Walker, D. L.; Henshaw, J. D.; Jeffreson, S. M. R.; Petkova, M. A.; Ginsburg, A.; Barnes, A. T.; Battersby, C. D.; Immer, K.; Jackson, J. M.; Keto, E. R.; Krieger, N.; Mills, Elisabeth; Sánchez-Monge, Á.; Schmiedeke, A.; Suri, S. T.; Zhang, Q. (Royal Astronomical Society, 2019-02-07)
    The evolution of molecular clouds in galactic centres is thought to differ from that in galactic discs due to a significant influence of the external gravitational potential. We present a set of numerical simulations of ...
  • Mass loss from the exoplanet WASP-12b inferred from Spitzer phase curves 

    Bell, Taylor J.; Zhang, Michael; Cubillos, Patricio E.; Dang, Lisa; Fossati, Luca; Todorov, Kamen O.; Cowan, Nicolas B.; Deming, Drake; Zellem, Robert T.; Stevenson, Kevin B.; Crossfield, Ian J. M,; Dobbs-Dixon, Ian; Fortney, Jonathan J.; Knutson, Heather A.; Line, Michael R. (Royal Astronomical Society, 2019-07-25)
    The exoplanet WASP-12b is the prototype for the emerging class of ultrahot, Jupiter-mass exoplanets. Past models have predicted – and near-ultraviolet observations have shown – that this planet is losing mass. We present ...
  • Ab initio study of enhanced thermal conductivity in ordered AlGaO3 alloys 

    Mu, Sai; Peelaers, Hartwin; Van de Walle, Chris G. (American Institute of Physics, 2019-12-09)
    We compute the lattice thermal conductivity of monoclinic β-Ga2O3 and the ordered AlGaO3 alloy from the phonon Boltzmann transport equation, with the harmonic and third-order anharmonic force constants calculated from ...
  • Low Electron Temperatures Observed at Mars by MAVEN on Dayside Crustal Magnetic Field Lines 

    Sakai, Shotaro; Cravens, Thomas Edward; Andersson, Laila; Fowler, Christopher M.; Mitchell, David L.; Mazelle, Christian; Thiemann, Edward M. B.; Eparvier, Francis G.; Brain, David A.; Seki, Kanako (Wiley, 2019-08-23)
    The ionospheric electron temperature is important for determining the neutral/photochemical escape rate from the Martian atmosphere via the dissociative recombination of O2+. The Langmuir Probe and Waves instrument onboard ...
  • Pressure Gradients Driving Ion Transport in the Topside Martian Atmosphere 

    Hamil, O.; Cravens, T. E.; Rahmati, A.; Connerney, J. E. P.; Andersson, L. (Wiley, 2019-07-04)
    Magnetic and thermal pressure gradient forces drive plasma flow in the topside ionosphere of Mars. Some of this flow can contribute to ion loss from the planet and thus affect atmospheric evolution. MAVEN measurements of ...
  • Plasma Transport in Saturn's Low‐Latitude Ionosphere: Cassini Data 

    Cravens, T. E.; Morooka, M.; Renzaglia, A.; Moore, L.; Waite, J. H., Jr.; Perryman, R.; Perry, M.; Wahlund, J.‐E.; Persoon, A.; Hadid, L. (Wiley, 2019-05-20)
    In 2017 the Cassini Orbiter made the first in situ measurements of the upper atmosphere and ionosphere of Saturn. The Ion and Neutral Mass Spectrometer in its ion mode measured densities of light ion species (H+, H2+, H3+, ...
  • From Cosmic Explosions to Terrestrial Fires? 

    Melott, Adrian L.; Thomas, Brian C. (University of Chicago Press, 2019-05-28)
    Multiple lines of evidence point to one or more moderately nearby supernovae, with the strongest signal at ∼2.6 Ma. We build on previous work to argue for the likelihood of cosmic ray ionization of the atmosphere and ...
  • The Ion Composition of Saturn's Equatorial Ionosphere as Observed by Cassini 

    Cravens, Thomas Edward; Moore, L.; Waite, J. H., Jr.; Perryman, R.; Perry, M.; Wahlund, J.‐E.; Persoon, A.; Kurth, W. S. (Wiley, 2018-05-21)
    The Cassini Orbiter made the first in situ measurements of the upper atmosphere and ionosphere of Saturn in 2017. The Ion and Neutral Mass Spectrometer (INMS) found molecular hydrogen and helium as well as minor species ...
  • Suggestion of coherent radio reflections from an electron-beam induced particle cascade 

    Prohira, S.; de Vries, K. D.; Besson, David Zeke; Connolly, A.; Hast, C.; Latif, U.; Meures, T.; Nozdrina, A.; Ralston, John Peter; Riesen, Z.; Saltzberg, D.; Torres, J.; Wissel, S.; Zuo, X. (American Physical Society, 2019-10-14)
    Testbeam experiment 576 at the SLAC National Accelerator Laboratory sought to make the first measurement of coherent radio reflections from the ionization produced in the wake of a high-energy particle shower. The > 10 ...
  • Measurement of atmospheric tau neutrino appearance with IceCube DeepCore 

    Aartsen, M. G.; Besson, David Zeke; IceCube Collaboration (American Physical Society, 2019-02-15)
    We present a measurement of atmospheric tau neutrino appearance from oscillations with three years of data from the DeepCore subarray of the IceCube Neutrino Observatory. This analysis uses atmospheric neutrinos from the ...

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