Space VLBI at Low Frequencies
At sufficiently low frequencies, no ground-based radio array will be able to produce high resolution images while looking through the ionosphere.
Space VLBI Interferometry Low Frequency↗
Engineering topics
Kuiper, T.
Publications and source records attributed to Kuiper, T..
Low Frequency Radio Astronomy from Above the Ionosphere
Explore the source record for details and available documents.
VLBI low frequency interferometry surveys↗
Star Formation
Centimeter wavelengths observations have the potential of answering long-standing questions about star formation.
wavelengths↗
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↗
Reliable Customized Control Software in an R&D Environment
This paper describes the methodology by which we can allow each user or project a high degree of customization. To do this we rely on a mixture of public domain software and locally developed software.
configuration↗
The DSN Radio Observatory and Asian Pacific VLBI Network
The current status of VLBI radio astronomy at the DSN is described. Recent upgrades of the radio astronomy and VLBI recording instrumentation will provide new capabilities.
radio astronomy↗
Full-Sky Imaging at Low Frequencies
Exploring the frequency range from a few tens of MHZ down to a few tens of kHz commonly requires multiple antennas operating as an aperture synthesis interferometer to obtain angular resolution. This design must overcome the corrupting effects of interplanetary scintillation, interfering signals and nearly isotropic antennas that see strong sources such as the Sun and Jupiter at all times.
Jones, D. L.↗
Small Scale Fragmentation and Protostar Formation
POSTER.
Core D small scale fragmentary structure high spec↗
High Resolution Observation of CCS(J subscript N = 2 subscript 1 - 1 subscript o):New Insight into Clumpiness of Dark Cloud Cores
N/A.
carbon chain molecule dark cloud cores↗
Radio astronomy
A K-band reflected-wave ruby maser was used on the 64-meter (DSS-43) antenna at the Tidbinbilla Tracking Station, near Canberra, Australia. Spectral line observations were carried out near 22 GHz for water vapor sources and near 24 GHz for ammonia sources. The water vapor observations were made in the direction of known southern OH and H2O maser sources. All of the previously detected water line sources examined were detected. In addition, two new water vapor maser sources were discovered, G301.1+1.1and G308.9+0.1. The spectrum of G301.0+1.1 is presented six ammonia sources were found: G291.3-0.7, G305.4+0.2, G322.2+0.6, G327.3-0.5, G333.6-0.2, and G268.4-0.8. Spectra of two of these sources, G291.3-0.7 (RCW 57) and G305.4+0.2, are presented. Both show clearly the presence of the quadrupole splitting satellite lines that will allow the determination of NH3 optical depths in these clouds.
Shaffer, R. D.↗