Search results for "Solar cycle 23"

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The intensity contrast of solar photospheric faculae and network elements : II. Evolution over the rising phase of solar cycle 23

2006

We studied the radiative properties of small magnetic elements (active region faculae and the network) during the rising phase of solar cycle 23 from 1996 to 2001, determining their contrasts as a function of heliocentric angle, magnetogram signal, and the solar cycle phase. We combined near-simultaneous full disk images of the line-of-sight magnetic field and photospheric continuum intensity provided by the MDI instrument on board the SOHO spacecraft. Sorting the magnetogram signal into different ranges allowed us to distinguish between the contrast of different magnetic structures. We find that the contrast center-to-limb variation (CLV) of these small magnetic elements is independent of …

:ASTRONOMÍA Y ASTROFÍSICA::Sistema solar [UNESCO]PlagesFOS: Physical sciencesSolar cycle 23AstrophysicsAstrophysicsUNESCO::ASTRONOMÍA Y ASTROFÍSICAFaculaeMagnetogramSun activityRadiative transferAstrophysics::Solar and Stellar AstrophysicsPhysicsUNESCO::ASTRONOMÍA Y ASTROFÍSICA::Sistema solarSpacecraftbusiness.industryAstrophysics (astro-ph)SunContrast (statistics)Astronomy and AstrophysicsMagnetic fluxMagnetic fieldOn boardSun activity ; Faculae ; Plages ; Sun ; Magnetic fieldsSpace and Planetary ScienceMagnetic fieldsPhysics::Space PhysicsAstrophysics::Earth and Planetary Astrophysicsbusiness:ASTRONOMÍA Y ASTROFÍSICA [UNESCO]
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