Aberrations of radio signals traversing the auroral ionosphere interim report no. 1, 1 aug. 1964 - 31 jan. 1965
Radio star signal measurement beneath auroral ionosphere for satellite tracking
AURORAL ZONE↗
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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Radio-star visibility fades observed in the auroral zone, part i scientific report no. 1
Radio star signal visibility fading observed in auroral zone by phase-switching interferometer
SIGNAL FADING↗
Neutrino astrophysics, supermassive stars, quasars, and extragalactic radio sources, and nuclear energy generation in supermassive stars
Neutrino astrophysics - supermassive stars, quasars, and extragalactic radio sources
CONFERENCE↗
Supermassive stars, quasars, and extragalactic radio sources, I
Optical observations of supermassive stars, quasars, and identification of extragalactic radio sources
ASTROPHYSICS↗
Two lunar occultations of the Crab Nebula
Radio interferometric observations on lunar occultations of Crab Nebula
CRAB NEBULA↗
Studies in the 11 meter range of radio astronomy using high resolution and high sensitivity antenna arrays at Clark Lake Final report
Radio astronomy studies using high sensitivity antenna arrays - lunar occultations of Crab Nebula, solar radio bursts, and long wavelength observations of radio stars
RADIO STAR SIGNAL↗
RADIO EMISSION FROM FLARE STARS
Photographic and radio observations of radio emissions of flare stars, accomplished by the radio telescopes at jordell bank and by baker-nunn cameras
ASTRONOMICAL PHOTOGRAPHY↗
Gsfc four stations, rosman i system test final report
X-y mounted, 85 foot diameter, parabolic antenna system for solar, radio star and satellite tracking
SATELLITE TRACKING↗
Neutron stars as x-ray sources.
Neutron stars considered as origin of X-ray emission from Scorpius and Crab Nebula
CRAB NEBULA↗
Observation of a solar type radio burst from a flare star.
Correlation of radio and optical emission from flare star compared with frequency-drift type solar radio burst
SOLAR RADIO BURST↗
11.4 meter wavelength observations with 4 arc minute resolution
Four mile antenna grating array for long wavelength observations of star transits
STAR TRACKING↗
Relation between the red-shifts of quasi- stellar objects and their radio and optical magnitudes.
Red shifts of quasi-stellar objects and relation to radio and optical magnitudes, concluding that red shifts have no relation to distance
QUASI-STELLAR RADIO SOURCE /QSO/↗
Influence of the terrestrial environment on the temporal and statistical characteristics of Jovian decametric radiation.
Jovian decametric pulses compared with satellite and radio star scintillations in terrestrial ionosphere
DIURNAL VARIATION↗
Radio-star scintillations and spread F in the auroral zone.
Radio star Cassiopeia A scintillations and spread-F in auroral zone
AURORAL ZONE↗
Extraterrestrial intelligence? The search is on
NASA's SETI-Microwave Observing Project, beginning on October 12, 1992, will search the closest solar-type stars for radio signals from extraterrestrial civilizations. When completed in the year 2000, the NASA search will have surpassed the search volume of all prior searches by a factor of 10 exp 10. The world's largest radio telescopes will be employed, in conjunction with the NASA Deep Space Network communications antennas. The program will be led by NASA-Ames, with substantial contribution by JPL.
Coulter, Gary R.↗
STADAN antenna gain calibration using radio stars
An antenna gain measurement method was developed which utilizes a signal emitted from a radio star to determine absolute antenna gain at 136 MHz and 400 MHz for antennas in the STADAN network. An error analysis of the radio star method shows that the overall standard deviation uncertainty in antenna gain is + or - 0.6 db (1 sigma).
Taylor, R. E.↗
A symbiotic approach to SETI observations: use of maps from the Westerbork Synthesis Radio Telescope
High spatial resolution continuum radio maps produced by the Westerbork Synthesis Radio Telescope (WSRT) of The Netherlands at frequencies near the 21 cm HI line have been examined for anomalous sources of emmission coincident with the locations of nearby bright stars. From a total of 542 stellar positions investigated, no candidates for radio stars or ETI signals were discovered to formal limits on the minimum detectable signal ranging from 7.7 x 10(-22) W/m2 to 6.4 x 10(-24) W/m2. This preliminary study has verified that data collected by radio astronomers at large synthesis arrays can profitably be analysed for SETI signals (in a non-interfering manner) provided only that the data are available in the form of a more or less standard two dimensional map format.
Exobiology/methods↗