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Habbal, S.

Publications and source records attributed to Habbal, S..

16 records
All sourcesNASA NTRSDOE OSTI
NASA NTRS2000

Connecting the Sun and the solar wind: source regions of the fast wind observed in interplanetary space

Highly sensitive radio occultation and white light measurements of path-integrated density have shown that the solar corona comprises three distinct morphological regions, streamer, quiet Sun, and polar coronal hole, which except for the streamer region, extend radially into interplanetary space from 1.15 R***s*** to at least 30 R***s***. The authors build on these results by comparing solar wind flow speeds observed at the same time as path-integrated density.

solar↗
NASA NTRS1999

Coronal Hole Myth

Explore the source record for details and available documents.

solar wind solar corona↗
NASA NTRS1999

A New View of the Origin of the Solar Wind

This paper uses white-light measurements made by the SOHO LASCO coronagraph and HAO Mauna Loa Mk III K-coronameter to illustrate the new view of solar wind structure deduced originally from radio occultation measurements.

solar↗
NASA NTRS1998

Here Comes Solar Prove!

Flying a trajectory perpendicular to the Earth-Sun line during its perihelion passage, Solar Probe will use in-situ and imaging instruments to provide the first three dimentional viewing of the corona, direct observations of solar polar regions, and local sampling of the solar environment. These primary observations are complemented by context-setting cruise measurements and Earth-based observations.

solar corona solar wind solar probe heliosphere ph↗
NASA NTRS1998

Raylike Structures in the Solar Corona

Recent white light images from the large-angle spectroscopic coronagraph (LASCO) on the Solar and Heliospheric Observatory (SoHO) have revealed almost radially extending coronal structures out to serveral solar raddi which fill the corona at all latitudes, except when they are overshadowed by streamers.

corona Sun raylike structures↗