منابع مشابه
Bolometric interferometry: the millimeter-wave bolometric interferometer
Bolometric interferometry is not a new idea, but this technique has not been demonstrated at millimeter wavelengths. The millimeter-wave bolometric interferometer combines the advantages of two well-developed technologies – interferometers and bolometric detectors – and will open a new region of sensitivity and angular resolution not previously accessible to other instruments. 2003 Elsevier B.V...
متن کاملGallium Phosphide IMPATT Sources for Millimeter-Wave Applications
The potentiality of millimter-wave (mm-wave) double-drift region (DDR) impact avalanche transit time (IMPATT) diodes based on a wide bandgap (WBG) semiconductor material, Gallium Phosphide (GaP) has been explored in this paper. A non-sinusoidal voltage excited (NSVE) large-signal simulation method has been used to study the DC and high frequency characteristics of DDR GaP IMPATTs dsigned to ope...
متن کاملTropospheric Phase Calibration in Millimeter Interferometry
We review millimeter interferometric phase variations caused by variations in the precipitable water vapor content of the troposphere, and we discuss techniques proposed to correct for these variations. We present observations with the Very Large Array at 22 GHz and 43 GHz designed to test these techniques. We find that both the Fast Switching and Paired Array calibration techniques are effecti...
متن کاملInner Structure of Starless Core L694–2 Derived from Millimeter-Wave Interferometry
We study the density structure of the candidate contracting starless core L694–2 using 1.3 mm dust continuum observations from the IRAM Plateau de Bure Interferometer and the Berkeley-Illinois-Maryland Array, which probe spatial scales from 10000 AU to 500 AU. The long baseline PdBI observations detect no emission from the core, and limit the maximum contamination from a compact component Fc < ...
متن کاملMeasurement of Spectral Breaks in Pulsar Wind Nebulae with Millimeter-wave Interferometry
We have observed pulsar wind nebulae in the three supernova remnants G11.2−0.3, G16.7+0.1, and G29.7−0.3 at 89 GHz with the Berkeley-Illinois-Maryland Association Array, measuring total flux densities of two of them for comparison with archival data at other frequencies. In G16.7+0.1, we find a break in the spectrum of the PWN at ∼ 26 GHz. In G29.7−0.3, our data suggest a break in the integrate...
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ژورنال
عنوان ژورنال: Highlights of Astronomy
سال: 1989
ISSN: 1539-2996
DOI: 10.1017/s1539299600008315