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Mass models of the Milky Way
Published 2011“…We find some correlations between the best-fitting parameters of our models (for example, between the disc scalelengths and the solar radius), which we discuss. The chosen disc scaleheights are shown to have little effect on the key properties of the model. © 2011 The Author. …”
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Coronal Streamers Revealed during Solar Eclipses: Seeing is not Believing, and Pictures Can Lie
Published 2011-08-01“…Brightness in the corona is unprecedented, as it falls by three orders of magnitude over a distance of only one solar radius from the Sun.…”
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ORFEES – a radio spectrograph for the study of solar radio bursts and space weather applications
Published 2021-01-01“…The full scientific return of these projects needs vigorous ground-based support, which at radio wavelengths covers altitudes up to about a solar radius above the photosphere. Besides research in solar and heliospheric physics, monitoring solar radio bursts also supports space weather services. …”
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Interval forecasting on renewable power generation
Published 2019“…Solar irradiance dataset was collected from the solar radius situated at NUS Geography Weather Station and it was further divided into training dataset and testing dataset. …”
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Detectability of Sungrazing Comet Soft X-ray Irradiance
Published 2007-12-01“…In our estimation, the sungrazing comet whose nucleus size is about 1 km in radius might be detectable within a distance of 3 solar radius from the sun on soft X-ray solar camera.…”
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FEATURES OF THE INITIAL STAGE OF FORMATION OF FAST CORONAL MASS EJECTION ON FEBRUARY 25, 2014
Published 2020-09-01“…At large distances R>7R0 (R0 is the solar radius) from the center of the Sun in front of the CME, a shock wave of another type is formed — a “piston” collisional shock wave whose velocity varies little with distance. …”
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Generation and evolution of interplanetary slow shocks
Published 1996-04-01“…In addition, the FSS always disappears within a distance of 150<i>R</i><sub>&odot;</sub> (where <i>R</i><sub>&odot;</sub> is one solar radius) from the Sun when there is a forward fast shock (with Mach number ≥1.7) propagating in front of the FSS. …”
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Migration and kinematics in growing disc galaxies with thin and thick discs
Published 2017“…Models that are baryon-dominated to roughly the Solar radius R0 are favoured, in agreement with data for the Milky Way. …”
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Solar energetic electrons events
Published 2023-07-01“…By comparing the simulated spectrum of electron events considering the energy loss during interplanetary transportation with in situ observations, it can be known that the source region of electron events should be located in the high corona (~1.3 solar radius). The location of source region of electron events should still be high in the corona (~1.1~1.3 solar radius) considering the variation of density model implemented, and based on these results, this paper proposes a new acceleration scenario for the acceleration of solar energetic electron events.…”
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Generation and evolution of interplanetary slow shocks
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Hierarchy in the phase space and dark matter astronomy
Published 2010“…The local boost is inversely proportional to the smooth halo density, and thus is O(1) within the solar radius, which could translate into interesting signatures for dark matter direct detection experiments: The temporal correlation of dark matter detection can change by a factor of 2 in the span of 10 years, while there will be significant correlations in the velocity space of dark matter particles. …”
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Local stellar kinematics from Hipparcos data
Published 1997“…The persistence of the vertex deviation to late-type stars implies that the Galactic potential is significantly non-axisymmetric at the solar radius. If spiral arms are responsible for this, they cannot be tightly wound. …”
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Photoelectric Observations and UBVRI Light Curves Analysis of Algol
Published 1993-12-01“…Indivisual masses for the 3 components of Algol are derived as m1=3.36, m2=0.76, m3=1.6 in solar mass and radii as R1=2.97, R2=0.76 in solar radius using i=82.¡Æ47, q=0.227, r1=0.2102, r2=0.2512 of our solution and some parameter of the spectroscopic solution of Hill et al. (1971). …”
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Auto-detection of Halo CME Parameters as the Initial Condition of Solar Wind Propagation
Published 2017-12-01“…In addition, we developed an image processing technique to derive the morphological and dynamical characteristics of halo CMEs, namely, the source location, width, actual CME speed, and arrival time at a 21.5 solar radius. The proposed halo CME automatic analysis model was validated using a model of the past three halo CME events. …”
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On the Origin of the Rhythmic Sun’s Radius Variation
Published 2022-02-01“…Here, we observe, for the first time, that the solar radius variation resembles a 225-day relationship that coincides with Venus’ orbital period. …”
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Multipoint radio probe of the solar corona: The trans-coronal radio array fleet
Published 2022-11-01“…The Trans-Coronal Radio Array Fleet (T-CRAF) is a mission concept designed to continuously probe the magnetic field and plasma density structure of the corona at heliocentric distances of ≈ 2 − 10 R⊙ (solar radius, R⊙ = 695, 700 km). T-CRAF consists of thirty small satellites orbiting the Sun-Earth Lagrange Point L3 in order to provide thirty lines of sight (LOS) for ground- or space-based radio propagation studies. …”
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Dynamical model of the Milky Way using APOGEE and Gaia data
Published 2021“…We estimate a circular velocity at the solar radius of vcirc = (234.7 ± 1.7syst) km s−1 with a decline toward larger radii. …”
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Constraining the Galaxy's dark halo with RAVE stars
Published 2014“…Our value for the dark mass within the solar radius is larger than that predicted by cosmological dark-matter-only simulations but in good agreement with simulations once the effects of baryonic infall are taken into account. …”
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Stray-Light Suppression of the Internally Occulted Reflecting Solar Corona Imager
Published 2022-06-01“…In this study, a stray-light suppression method is adopted for Solar Corona Imager (SCI) which is a dual-waveband internally occulted reflecting coronagraph simultaneously and independently observing the inner corona in the HI Lyman-alpha (121.6 ± 10 nm) line and white-light (700.0 ± 40 nm) wavebands with a field-of-view (FOV) from 1.1 to 2.5 R⊙ (R⊙ stands for the mean solar radius). The scattered stray-light from the primary mirror, including the surface errors, cosmetic defects, and particulate contamination, is analyzed and suppressed, and the corresponding scattering models are established for simulation based on the laboratory testing. …”
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Sources of solar energy and interplanetary magnetic field
Published 2017-12-01“…As a result, a Schwarzschild criterion of the emergence of a convective energy transfer due to hydrodynamic motions begins to run at a distance of 0.3 solar radius from the surface. Above this boundary lies a layer of convective turbulence, in which energy is transferred mainly by a moving substance, and not by radiation. …”
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