@article{KimShprits2018,
  author    = {Kim, Kyung-Chan and Shprits, Yuri Y.},
  title     = {Survey of the Favorable Conditions for Magnetosonic Wave Excitation},
  series = {Journal of geophysical research : Space physics},
  volume    = {123},
  journal   = {Journal of geophysical research : Space physics},
  number    = {1},
  publisher = {American Geophysical Union},
  address   = {Washington},
  issn      = {2169-9380},
  doi       = {10.1002/2017JA024865},
  pages     = {400 -- 413},
  year      = {2018},
  abstract  = {The ratio of the proton ring velocity (VR) to the local Alfven speed (VA), in addition to proton ring distributions, plays a key factor in the excitation of magnetosonic waves at frequencies between the proton cyclotron frequency fcp and the lower hybrid resonance frequency fLHR in the Earth's magnetosphere. Here we investigate whether there is a statistically significant relationship between occurrences of proton rings and magnetosonic waves both outside and inside the plasmapause using particle and wave data from Van Allen Probe-A during the time period of October 2012 to December 2015. We also perform a statistical survey of the ratio of the ring energy (ER, corresponding to VR) to the Alfven energy (EA, corresponding to VA) to determine the favorable conditions under which magnetosonic waves in each of two frequency bands (fcp < f ≤ 0.5 fLHR and 0.5 fLHR < f < fLHR) can be excited. The results show that the magnetosonic waves in both frequency bands occur around the postnoon (12-18 magnetic local time, MLT) sector outside the plasmapause when ER is comparable to or lower than EA, and those in lower-frequency bands (fcp < f ≤ 0.5 fLHR) occur around the postnoon sector inside the plasmapause when ER/EA > ~9. However, there is one discrepancy between occurrences of proton rings and magnetosonic waves in low-frequency bands around the prenoon sector (6-12 MLT) outside the plasmapause, which suggests either that the waves may have propagated during active time from the postnoon sector after being excited during quiet time, or they may have locally excited in the prenoon sector during active time.},
  language  = {en}
}
@misc{LuehrWichtGilderetal.2018,
  author    = {L{\"u}hr, Hermann and Wicht, Johannes and Gilder, Stuart A. and Holschneider, Matthias},
  title     = {General Introduction and Scientific Summary of the German Priority Program "PlanetMag"},
  series = {Magnetic Fields in the Solar System},
  volume    = {448},
  journal   = {Magnetic Fields in the Solar System},
  publisher = {Springer},
  address   = {Dordrecht},
  isbn      = {978-3-319-64292-5},
  issn      = {0067-0057},
  doi       = {10.1007/978-3-319-64292-5_1},
  pages     = {1 -- 6},
  year      = {2018},
  abstract  = {This book aims at understanding the diversity of planetary and lunar magnetic fields and their interaction with the solar wind. A synergistic interdisciplinary approach combines newly developed tools for data acquisition and analysis, computer simulations of planetary interiors and dynamos, models of solar wind interaction, measurement of terrestrial rocks and meteorites, and laboratory investigations. The following chapters represent a selection of some of the scientific findings derived by the 22 projects within the DFG Priority Program Planetary Magnetism" (PlanetMag). This introductory chapter gives an overview of the individual following chapters, highlighting their role in the overall goals of the PlanetMag framework. The diversity of the different contributions reflects the wide range of magnetic phenomena in our solar system. From the program we have excluded magnetism of the sun, which is an independent broad research discipline, but include the interaction of the solar wind with planets and moons. Within the subsequent 13 chapters of this book, the authors review the field centered on their research topic within PlanetMag. Here we shortly introduce the content of all the subsequent chapters and outline the context in which they should be seen.},
  language  = {en}
}
@article{UtechtKlamroth2018,
  author    = {Utecht, Manuel Martin and Klamroth, Tillmann},
  title     = {Local resonances in STM manipulation of chlorobenzene on Si(111)-7x7},
  series = {Molecular physics},
  volume    = {116},
  journal   = {Molecular physics},
  number    = {13},
  publisher = {Routledge, Taylor \& Francis Group},
  address   = {Abingdon},
  issn      = {0026-8976},
  doi       = {10.1080/00268976.2018.1442939},
  pages     = {1687 -- 1696},
  year      = {2018},
  abstract  = {Hot localised charge carriers on the Si(111)-7x7 surface are modelled by small charged clusters. Such resonances induce non-local desorption, i.e. more than 10 nm away from the injection site, of chlorobenzene in scanning tunnelling microscope experiments. We used such a cluster model to characterise resonance localisation and vibrational activation for positive and negative resonances recently. In this work, we investigate to which extent the model depends on details of the used cluster or quantum chemistry methods and try to identify the smallest possible cluster suitable for a description of the neutral surface and the ion resonances. Furthermore, a detailed analysis for different chemisorption orientations is performed. While some properties, as estimates of the resonance energy or absolute values for atomic changes, show such a dependency, the main findings are very robust with respect to changes in the model and/or the chemisorption geometry. [GRAPHICS] .},
  language  = {en}
}
@article{MartinezChicharroTorrejonOskinovaetal.2018,
  author    = {Martinez-Chicharro, M. and Torrejon, J. M. and Oskinova, Lida and Furst, F. and Postnov, K. and Rodes-Roca, J. J. and Hainich, Rainer and Bodaghee, A.},
  title     = {Evidence of Compton cooling during an X-ray flare supports a neutron star nature of the compact object in 4U1700-37},
  series = {Monthly notices of the Royal Astronomical Society},
  volume    = {473},
  journal   = {Monthly notices of the Royal Astronomical Society},
  number    = {1},
  publisher = {Oxford Univ. Press},
  address   = {Oxford},
  issn      = {0035-8711},
  doi       = {10.1093/mnrasl/slx165},
  pages     = {L74 -- L78},
  year      = {2018},
  abstract  = {Based on new Chandra X-ray telescope data, we present empirical evidence of plasma Compton cooling during a flare in the non-pulsating massive X-ray binary 4U1700-37. This behaviour might be explained by quasi-spherical accretion on to a slowly rotating magnetized neutron star (NS). In quiescence, the NS in 4U1700-37 is surrounded by a hot radiatively cooling shell. Its presence is supported by the detection of mHz quasi-periodic oscillations likely produced by its convection cells. The high plasma temperature and the relatively low X-ray luminosity observed during the quiescence, point to a small emitting area similar to 1 km, compatible with a hotspot on an NS surface. The sudden transition from a radiative to a significantly more efficient Compton cooling regime triggers an episode of enhanced accretion resulting in a flare. During the flare, the plasma temperature drops quickly. The predicted luminosity for such transitions, similar to 3 x 10(35) erg s(-1), is very close to the luminosity of 4U1700-37 during quiescence. The transition may be caused by the accretion of a clump in the stellar wind of the donor star. Thus, a magnetized NS nature of the compact object is strongly favoured.},
  language  = {en}
}
@misc{WangRychkovGerhard2018,
  author    = {Wang, Jingwen and Rychkov, Dmitry and Gerhard, Reimund},
  title     = {Influence of Charge Density on Charge Decay in Chemically Modified Polypropylene Films},
  series = {2018 IEEE 2nd International Conference on Dielectrics (ICD)},
  journal   = {2018 IEEE 2nd International Conference on Dielectrics (ICD)},
  publisher = {IEEE},
  address   = {New York},
  isbn      = {978-1-5386-6389-9},
  doi       = {10.1109/ICD.2018.8514718},
  pages     = {4},
  year      = {2018},
  abstract  = {Previous work has shown that surface modification with orthophosphoric acid can significantly enhance the charge stability on polypropylene (PP) surface by generating deeper traps. In the present study, thermally stimulated potential-decay measurements revealed that the chemical treatment may also significantly increase the number of available trapping sites on the surface. Thus, as a consequence, the so-called "cross-over" phenomenon, which is observed on as-received and thermally treated PP electrets, may be overcome in a certain range of initial charge densities. Furthermore, the discharge behavior of chemically modified samples indicates that charges can be injected from the treated surface into the bulk, and/or charges of opposite polarity can be pulled from the rear electrode into the bulk at elevated temperatures and at the high electric fields that are caused by the deposited charges. In the bulk, a lack of deep traps causes rapid charge decay already in the temperature range around 95 degrees C.},
  language  = {en}
}
@misc{RamanVenkatesanFruebingGerhard2018,
  author    = {Raman Venkatesan, Thulasinath and Fr{\"u}bing, Peter and Gerhard, Reimund},
  title     = {Influence of Composition and Preparation on Crystalline Phases and Morphology in Poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene) Relaxor-Ferroelectric Terpolymer},
  series = {2018 IEEE 2nd International Conference on Dielectrics (ICD)},
  journal   = {2018 IEEE 2nd International Conference on Dielectrics (ICD)},
  publisher = {IEEE},
  address   = {New York},
  isbn      = {978-1-5386-6389-9},
  doi       = {10.1109/ICD.2018.8514758},
  pages     = {4},
  year      = {2018},
  abstract  = {The influence of chemical composition and crystallisation conditions on the ferroelectric and paraelectric phases and the resulting morphology in Poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene) (P(VDF-TrFE-CFE)) terpolymer films with 55.4/37.2/7.3 mol\% or with 62.2/29.4/8.4 mol\% of VDF/TrFE/CFE was studied. Poly(vinylidene fluoride trifluoroethylene) (P(VDF-TrFE)) with 75/25 mol\% VDF/TrFE was employed as reference material. Fourier-Transform Infrared Spectroscopy (FTIR) was used to determine the fractions of the relevant terpolymer phases, and X-Ray Diffraction (XRD) was employed to assess the crystalline morphology. The FTIR results show an increase of the fraction of paraelectric phases after annealing. On the other hand, XRD results indicate a more stable paraelectric phase in the terpolymer with higher CFE content.},
  language  = {en}
}
@misc{RychkovStojharovKuznetsovetal.2018,
  author    = {Rychkov, Andrey and Stojharov, Valery and Kuznetsov, Alexey and Rychkov, Dmitry},
  title     = {The influence of recrystallization regimes on electret charge stability in low-density polyethylene films},
  series = {2018 IEEE 2nd International Conference on Dielectrics (ICD)},
  journal   = {2018 IEEE 2nd International Conference on Dielectrics (ICD)},
  publisher = {IEEE},
  address   = {New York},
  isbn      = {978-1-5386-6389-9},
  doi       = {10.1109/ICD.2018.8514638},
  pages     = {4},
  year      = {2018},
  abstract  = {The electret state stability in nonpolar semicrystalline polymers is largely determined by the traps located at crystalline/ amorphous phase interfaces. Thus, the thermal history of such polymers should considerably influence their electret properties. In the present work, we investigate how recrystallization influences charge stability in low-density polyethylene corona electrets. It has been found that electret charge stability in quenched samples is higher than in slowly-crystallized ones. Phenomenologicaly, this can be explained by the increased number of deeper traps in samples with smaller crystallite size.},
  language  = {en}
}
@misc{NguyenGerhard2018,
  author    = {Nguyen, Quyet Doan and Gerhard, Reimund},
  title     = {LDPE/MgO Nanocomposite Dielectrics for Electrical-Insulation and Ferroelectret-Transducer Applications},
  series = {2018 IEEE 2nd International Conference on Dielectrics (ICD)},
  journal   = {2018 IEEE 2nd International Conference on Dielectrics (ICD)},
  publisher = {IEEE},
  address   = {New York},
  isbn      = {978-1-5386-6389-9},
  pages     = {4},
  year      = {2018},
  abstract  = {Published results on LDPE/MgO nanocomposites (3wt\%) show that they promise to be good electrical-insulation materials. In this work, the nanocomposites are examined as a potential (ferro-)electret material as well. Isothermal surface-potential decay measurements show that charged LDPE/MgO films still exhibit significant surface potentials after heating for 4 hours at 80 degrees C, which suggests good capabilities of LDPE/MgO nanocomposites to hold electric charges of both polarities. Open-tubular-channel ferroelectrets prepared from LDPE/MgO nanocomposite films show significant piezoelectricity with d(33) coefficients of about 20 pC/N after charging and are stable up to temperatures of at least 80 degrees C. Thus LDPE/MgO nanocomposites may become available as a new ferroelectret material. To increase their d(33) coefficients, it is desirable to optimize the charging conditions and the ferroelectret structure.},
  language  = {en}
}
@misc{MaierWolfKeiligetal.2018,
  author    = {Maier, Philipp and Wolf, J{\"u}rgen and Keilig, Thomas and Krabbe, Alfred and Duffard, Rene and Ortiz, Jose-Luis and Klinkner, Sabine and Lengowski, Michael and M{\"u}ller, Thomas and Lockowandt, Christian and Krockstedt, Christian and Kappelmann, Norbert and Stelzer, Beate and Werner, Klaus and Geier, Stephan Alfred and Kalkuhl, Christoph and Rauch, Thomas and Schanz, Thomas and Barnstedt, J{\"u}rgen and Conti, Lauro and Hanke, Lars},
  title     = {Towards a European Stratospheric Balloon Observatory},
  series = {Ground-based and Airborne Telescopes VII},
  volume    = {10700},
  journal   = {Ground-based and Airborne Telescopes VII},
  publisher = {SPIE-INT Soc Optical Engineering},
  address   = {Bellingham},
  isbn      = {978-1-5106-1954-8},
  issn      = {0277-786X},
  doi       = {10.1117/12.2319248},
  pages     = {12},
  year      = {2018},
  abstract  = {This paper presents the concept of a community-accessible stratospheric balloon-based observatory that is currently under preparation by a consortium of European research institutes and industry. We present the technical motivation, science case, instrumentation, and a two-stage image stabilization approach of the 0.5-m UV/visible platform. In addition, we briefly describe the novel mid-sized stabilized balloon gondola under design to carry telescopes in the 0.5 to 0.6 m range as well as the currently considered flight option for this platform. Secondly, we outline the scientific and technical motivation for a large balloon-based FIR telescope and the ESBO DS approach towards such an infrastructure.},
  language  = {en}
}
@article{WillnerLevermannZhaoetal.2018,
  author    = {Willner, Sven N. and Levermann, Anders and Zhao, Fang and Frieler, Katja},
  title     = {Adaptation required to preserve future high-end river flood risk at present levels},
  series = {Science Advances},
  volume    = {4},
  journal   = {Science Advances},
  number    = {1},
  publisher = {American Assoc. for the Advancement of Science},
  address   = {Washington},
  issn      = {2375-2548},
  doi       = {10.1126/sciadv.aao1914},
  pages     = {8},
  year      = {2018},
  abstract  = {Earth's surface temperature will continue to rise for another 20 to 30 years even with the strongest carbon emission reduction currently considered. The associated changes in rainfall patterns can result in an increased flood risk worldwide. We compute the required increase in flood protection to keep high-end fluvial flood risk at present levels. The analysis is carried out worldwide for subnational administrative units. Most of the United States, Central Europe, and Northeast and West Africa, as well as large parts of India and Indonesia, require the strongest adaptation effort. More than half of the United States needs to at least double their protection within the next two decades. Thus, the need for adaptation to increased river flood is a global problem affecting industrialized regions as much as developing countries.},
  language  = {en}
}