Engineering topics

Woo, R.

Publications and source records attributed to Woo, R..

At least 37 records · Page 2

All sources NASA NTRS DOE OSTI

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 NTRS1999

The Astronomical Low Frequency Array: A Proposed Explorer Mission for Radio Astronomy

A radio interferometer array in space providing high dynamic range images with unprecedented angular resolution over the broad frequency range from 0.030 - 30 MHz will open new vistas in solar, terrestial, galactic, and extragalactic astrophysics.

radio astronomy VLBJ interferometry explorer missi↗

NASA NTRS1998

Ammonia Abundance at the Galileo Probe Site Derived from Absorption of its Radio Signal

The radio signal from the Galileo prove to the orbiter experienced attenuation due to ammonia in Jupiter's atmosphere during the probe descent.

Ammonia Jupiter Galileo radio signal↗

NASA NTRS1998

New Views of the Near-Sun Solar Wind: Radio Occultation Measurements

Explore the source record for details and available documents.

radio occultation near-sun solar coronal streamers↗

NASA NTRS1998

Multiscale Filamentary Structures in the Solar Corona and their Implications for the Origin and Evolutions of the Solar Wind

A change in the paradigm of coronal structure has emerged as a result of definitive measurements made with radio occultation, white-light (SOHO/LASCO), ultraviolet (SOHO/UVCS), and soft X-ray (Yohkoh) measurements.

Filamentary Structures solar wind corona↗

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↗

NASA NTRS1998

Imprint of the Sun on the Solar Wind

Observations of the inner corona in polarized brightness by the Mauna Loa MkIII K-coronameter and soft X-ray by Yohkoh of the inner corona are combined with Ulysses radio occultation measurements of the solar wind to demonstrate that the signature of active regions and bright points is present in the heliocentric distance range of 10-30 Ro.

occultation solar wind↗

NASA NTRS1998

Extension of the Polar Coronal Hole Boundary into Interplanetary Space

White-light measurements made by the Mk III Mauna Loa K-coronameter and the SOHO LASCO C2 and C3 coronagraphs, extending from 1.15 to 30 Ro, have been combined to show that the boundaries of polar coronal holes, as determined by measurements of path-integrated density, extend approximately radially into interplanetery space.

polar coronal radio occultation↗

NASA NTRS1998

Comment on: The Pioneer 6 Faraday Rotation Transients -- On the Interpretation of Coronal Faraday Rotation Data, by Patzold and Bird

The detection of coronal streamers in Doppler scintillation measurements revealed for the first time that variations in radio occultation measurements near the Sun could be caused by quasi-stationary raylike structures.

Faraday observation doppler scintillation coronal ↗

NASA NTRS1998

Comment on: Polar Plumes and Fine-scale Coronal Structures - On the Interpretation of Coronal Radio Sounding Data by Patzold and Bird

Radio occultation measurements, which probe electron density over a wide dynamic range with high sensitivity and high spatial and temporal resolution reveal a solar corona permeated by a hierarchy of filamentary structures.

Polar Plumes Coronal Structures↗

NASA NTRS1998

Radial Evolution of Density Structure in the Solar Corona

White-light measurements by the SOHO LASCO coronagraph and HAO Mauna Loa Mk III K-coronameter are used to follow density structure in the solar corona as it evolves from 1.15 to 5.5 Ro.

corona solar wind↗

NASA NTRS1997