Search Results - "Auchere, Frederic"
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Decomposing the AIA 304 Å Channel into Its Cool and Hot Components
Published in Solar physics (01-07-2024)“…The AIA 304 Å channel on board the Solar Dynamics Observatory (SDO) offers a unique view of ≈ 10 5 K plasma emitting in the He ii 304 Å line. However, when…”
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Validation of a Wave Heated 3D MHD Coronal-wind Model using Polarized Brightness and EUV Observations
Published in The Astrophysical journal (01-04-2022)“…Abstract The physical properties responsible for the formation and evolution of the corona and heliosphere are still not completely understood. 3D MHD global…”
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Observation of a Magnetic Switchback in the Solar Corona
Published in Astrophysical journal. Letters (01-09-2022)“…Switchbacks are sudden, large radial deflections of the solar wind magnetic field, widely revealed in interplanetary space by the Parker Solar Probe. The…”
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A Statistical Comparison of EUV Brightenings Observed by SO/EUI with Simulated Brightenings in Nonpotential Simulations
Published in Solar physics (2022)“…The High Resolution Imager (HRI EUV ) telescope of the Extreme Ultraviolet Imager (EUI) instrument onboard Solar Orbiter has observed EUV brightenings,…”
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Defining the Middle Corona
Published in Solar physics (01-06-2023)“…The middle corona, the region roughly spanning heliocentric distances from 1.5 to 6 solar radii, encompasses almost all of the influential physical transitions…”
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Plasma Composition Measurements in an Active Region from Solar Orbiter/SPICE and Hinode/EIS
Published in The Astrophysical journal (01-11-2022)“…A key goal of the Solar Orbiter mission is to connect elemental abundance measurements of the solar wind enveloping the spacecraft with extreme-UV (EUV)…”
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Three Eruptions Observed by Remote Sensing Instruments Onboard Solar Orbiter
Published in Solar physics (01-03-2023)“…On February 21 and March 21 – 22, 2021, the Extreme Ultraviolet Imager (EUI) onboard Solar Orbiter observed three prominence eruptions. The eruptions were…”
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Mapping solar magnetic fields from the photosphere to the base of the corona
Published in Science advances (19-02-2021)“…Routine ultraviolet imaging of the Sun's upper atmosphere shows the spectacular manifestation of solar activity; yet, we remain blind to its main driver, the…”
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Comprehensive Determination of the Hinode/EIS Roll Angle
Published in Solar physics (01-05-2019)“…We present a new coalignment method for the EUV Imaging Spectrometer (EIS) on board the Hinode spacecraft. In addition to the pointing offset and spacecraft…”
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Global helium abundance measurements in the solar corona
Published in Nature astronomy (01-12-2020)“…Solar abundances have been historically assumed to be representative of cosmic abundances. However, our knowledge of the solar abundance of helium, the second…”
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CLASP/SJ Observations of Rapid Time Variations in the Lyα Emission in a Solar Active Region
Published in The Astrophysical journal (10-09-2017)“…Abstract The Chromospheric Ly α SpectroPolarimeter (CLASP) is a sounding rocket experiment launched on 2015 September 3 to investigate the solar chromosphere…”
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Lifecycle of a Large-Scale Polar Coronal Pseudostreamer/Cavity System
Published in Frontiers in astronomy and space sciences (03-05-2016)“…We report on an exceptional large-scale coronal pseudostreamer/cavity system in the southern polar region of the solar corona that was visible for…”
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A Time-Evolving 3D Method Dedicated to the Reconstruction of Solar Plumes and Results Using Extreme Ultraviolet Data
Published in Solar physics (01-04-2008)“…An important issue in the tomographic reconstruction of the solar poles is the relatively rapid evolution of the polar plumes. We demonstrate that it is…”
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Design and performance of two-channel EUV multilayer mirrors with enhanced spectral selectivity
Published in Applied physics. A, Materials science & processing (01-05-2009)“…In this paper, we present a study on two-channel multilayer mirrors which can operate at two wavelengths in Extreme Ultraviolet (EUV) spectral range. We…”
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LEMUR: Large European module for solar Ultraviolet Research: European contribution to JAXA’s Solar-C mission
Published in Experimental astronomy (01-10-2012)“…The solar outer atmosphere is an extremely dynamic environment characterized by the continuous interplay between the plasma and the magnetic field that…”
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Two channel multilayer mirrors for astrophysics
Published in Optics communications (01-06-2008)“…A two-channel mirror reflecting both Fe-IX/X (λ=17.1nm) and He-II (30.4nm) resonance lines at near normal incidence has been designed, fabricated and…”
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Waves and Magnetism in the Solar Atmosphere (WAMIS)
Published in Frontiers in astronomy and space sciences (16-02-2016)“…Comprehensive measurements of magnetic fields in the solar corona have a long history as an important scientific goal. Besides being crucial to understanding…”
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Spectral Imager of the Solar Atmosphere: The First Extreme-Ultraviolet Solar Integral Field Spectrograph Using Slicers
Published in Aerospace (01-03-2024)“…Particle acceleration, and the thermalisation of energetic particles, are fundamental processes across the universe. Whilst the Sun is an excellent object to…”
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The Coronal Monsoon: Thermal Nonequilibrium Revealed by Periodic Coronal Rain
Published in The Astrophysical journal (01-02-2018)“…We report on the discovery of periodic coronal rain in an off-limb sequence of Solar Dynamics Observatory/Atmospheric Imaging Assembly images. The showers are…”
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Linking Small-scale Solar Wind Properties with Large-scale Coronal Source Regions through Joint Parker Solar Probe–Metis/Solar Orbiter Observations
Published in The Astrophysical journal (01-08-2022)“…Abstract The solar wind measured in situ by Parker Solar Probe in the very inner heliosphere is studied in combination with the remote-sensing observation of…”
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