The Experts below are selected from a list of 309 Experts worldwide ranked by ideXlab platform
D. Keys - One of the best experts on this subject based on the ideXlab platform.
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Uncertainties in Solar Synoptic Magnetic Flux Maps
Solar Physics, 2014Co-Authors: L. Bertello, A. A. Pevtsov, G. J. D. Petrie, D. KeysAbstract:Magnetic Flux synoptic charts are critical for a reliable modeling of the corona and heliosphere. Until now, however, these charts were provided without uncertainty estimates. The uncertainties are due to instrumental noise in the measurements and to the spatial variance of the Magnetic Flux distribution that contributes to each bin in the synoptic chart. We describe here a simple method to compute synoptic Magnetic Flux maps and their corresponding Magnetic Flux spatial variance charts that can be used to estimate the uncertainty in the results of coronal models. We have tested this approach by computing a potential-field source-surface model of the coronal field for a Monte Carlo simulation of Carrington synoptic Magnetic Flux maps generated from the variance map. We show that these uncertainties affect both the locations of source-surface neutral lines and the distributions of coronal holes in the models.
L. Bertello - One of the best experts on this subject based on the ideXlab platform.
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Uncertainties in Solar Synoptic Magnetic Flux Maps
Solar Physics, 2014Co-Authors: L. Bertello, A. A. Pevtsov, G. J. D. Petrie, D. KeysAbstract:Magnetic Flux synoptic charts are critical for a reliable modeling of the corona and heliosphere. Until now, however, these charts were provided without uncertainty estimates. The uncertainties are due to instrumental noise in the measurements and to the spatial variance of the Magnetic Flux distribution that contributes to each bin in the synoptic chart. We describe here a simple method to compute synoptic Magnetic Flux maps and their corresponding Magnetic Flux spatial variance charts that can be used to estimate the uncertainty in the results of coronal models. We have tested this approach by computing a potential-field source-surface model of the coronal field for a Monte Carlo simulation of Carrington synoptic Magnetic Flux maps generated from the variance map. We show that these uncertainties affect both the locations of source-surface neutral lines and the distributions of coronal holes in the models.
G. J. D. Petrie - One of the best experts on this subject based on the ideXlab platform.
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Uncertainties in Solar Synoptic Magnetic Flux Maps
Solar Physics, 2014Co-Authors: L. Bertello, A. A. Pevtsov, G. J. D. Petrie, D. KeysAbstract:Magnetic Flux synoptic charts are critical for a reliable modeling of the corona and heliosphere. Until now, however, these charts were provided without uncertainty estimates. The uncertainties are due to instrumental noise in the measurements and to the spatial variance of the Magnetic Flux distribution that contributes to each bin in the synoptic chart. We describe here a simple method to compute synoptic Magnetic Flux maps and their corresponding Magnetic Flux spatial variance charts that can be used to estimate the uncertainty in the results of coronal models. We have tested this approach by computing a potential-field source-surface model of the coronal field for a Monte Carlo simulation of Carrington synoptic Magnetic Flux maps generated from the variance map. We show that these uncertainties affect both the locations of source-surface neutral lines and the distributions of coronal holes in the models.
A. A. Pevtsov - One of the best experts on this subject based on the ideXlab platform.
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Uncertainties in Solar Synoptic Magnetic Flux Maps
Solar Physics, 2014Co-Authors: L. Bertello, A. A. Pevtsov, G. J. D. Petrie, D. KeysAbstract:Magnetic Flux synoptic charts are critical for a reliable modeling of the corona and heliosphere. Until now, however, these charts were provided without uncertainty estimates. The uncertainties are due to instrumental noise in the measurements and to the spatial variance of the Magnetic Flux distribution that contributes to each bin in the synoptic chart. We describe here a simple method to compute synoptic Magnetic Flux maps and their corresponding Magnetic Flux spatial variance charts that can be used to estimate the uncertainty in the results of coronal models. We have tested this approach by computing a potential-field source-surface model of the coronal field for a Monte Carlo simulation of Carrington synoptic Magnetic Flux maps generated from the variance map. We show that these uncertainties affect both the locations of source-surface neutral lines and the distributions of coronal holes in the models.
Eric Ragoucy - One of the best experts on this subject based on the ideXlab platform.
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Quantum wire network with Magnetic Flux
Physics Letters A, 2020Co-Authors: Vincent Caudrelier, Mihail Mintchev, Eric RagoucyAbstract:The charge transport and the noise of a quantum wire network, made of three semi-infinite external leads attached to a ring crossed by a Magnetic Flux, are investigated. The system is driven away from equilibrium by connecting the external leads to heat reservoirs with different temperatures and/or chemical potentials. The properties of the exact scattering matrix of this configuration as a function of the momentum, the Magnetic Flux and the transmission along the ring are explored. We derive the conductance and the noise, describing in detail the role of the Magnetic Flux. In the case of weak coupling between the ring and the reservoirs, a resonant tunneling effect is observed. We also discover that a non-zero Magnetic Flux has a strong impact on the usual Johnson-Nyquist law for the pure thermal noise at small temperatures.Comment: LaTex, 6 pages, 6 figures, improved discussion of the impact of the Magnetic Flux on the pure thermal nois
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Quantum wire network with Magnetic Flux
Physics Letters A, 2013Co-Authors: Vincent Caudrelier, Mihail Mintchev, Eric RagoucyAbstract:Abstract The charge transport and the noise of a quantum wire network, made of three semi-infinite external leads attached to a ring crossed by a Magnetic Flux, are investigated. The system is driven away from equilibrium by connecting the external leads to heat reservoirs with different temperatures and/or chemical potentials. The properties of the exact scattering matrix of this configuration as a function of the momentum, the Magnetic Flux and the transmission along the ring are explored. We derive the conductance and the noise, describing in detail the role of the Magnetic Flux. In the case of weak coupling between the ring and the reservoirs, a resonant tunneling effect is observed. We also discover that a non-zero Magnetic Flux has a strong impact on the usual Johnson–Nyquist law for the pure thermal noise at small temperatures.
