✦ LIBER ✦

Radio interferometric observations of solar bursts at 3.7 and 11.1 cm wavelengths

✍ Scribed by M. R. Kundu; P. E. Angerhofer

Publisher: Springer
Year: 1979
Tongue: English
Weight: 219 KB
Volume: 64
Category: Article
ISSN: 0038-0938
DOI: 10.1007/bf00151124

No coin nor oath required. For personal study only.

✦ Synopsis

Several solar active regions were observed during the 1976 vernal equinox with the 3-element interferometer of the National Radio Astronomy Observatory. The element spacings for these observations were 600, 2100, and 2700 m, resulting in maximum angular resolutions of about 3 arc sec at 3.7 cm and 8.5 arc sec at 11.1 cm. We fitted the fringe visibility for each baseline pair as a function of projected baseline with a single gaussian component, and calculated the extrapolated flux at zero baseline, Fo, the FWHM source size, a, and the peak brightness temperature Tb. We present physical parameters derived for the observed bursts.

📜 SIMILAR VOLUMES

High resolution observations of solar bu

High resolution observations of solar bursts at 3.7 and 11.1 cm wavelengths

✍ C. E. Alissandrakis; M. R. Kundu 📂 Article 📅 1975 🏛 Springer 🌐 English ⚖ 657 KB

Fine structure of a solar active region

Fine structure of a solar active region at 3.7 and 11.1 cm wavelengths

✍ M. R. Kundu; R. H. Becker; T. Velusamy 📂 Article 📅 1974 🏛 Springer 🌐 English ⚖ 698 KB

The three-element interferometer of the National Radio Astronomy Observatory was used to observe the Sun at 3.7 and 11.1 cm wavelengths during the period June 5-9, 1973. The baselines of the interferometer were 900, 1800 and 2700 meters, with maximum angular resolution of 3" at 3.7 and 9" at 11.1 cm

Fine structure of a solar flare region a

Fine structure of a solar flare region at 3.7 and 11.1 cm wavelengths

✍ M. R. Kundu; T. Velusamy; R. H. Becker 📂 Article 📅 1974 🏛 Springer 🌐 English ⚖ 273 KB

On June 9, 1973, a flare associated burst was observed with the NRAO 3-element interferometer at 3.7 and 11.1 cm wavelength. The burst was of 'gradual rise and fall' type. Comparing the fringe amplitudes at 3.7 cm to the visibility computed for model flare regions we found that the precursor data ar

High resolution polarimetry of the Sun a

High resolution polarimetry of the Sun at 3.7 and 11.1 cm wavelengths

✍ Kenneth R. Lang 📂 Article 📅 1977 🏛 Springer 🌐 English ⚖ 341 KB

Observations and interpretation of the s

Observations and interpretation of the slowly varying component of solar radio emission at decameter wavelengths

✍ Ch. V. Sastry; K. S. Dwarkanath; R. K. Shevgaonkar; V. Krishan 📂 Article 📅 1981 🏛 Springer 🌐 English ⚖ 517 KB

We have observed the slowly varying component of solar radio emission at a frequency of 34.5 MHz with half power beam widths of 26'/40' in the east-west and north-south directions, respectively. It is found that the observed brightness temperatures vary within the limits of 0.3x 106 K to 1.5 x 106 K

Observations of the 7 March, 1970 total

Observations of the 7 March, 1970 total solar eclipse at wavelengths of 3.2 and 8.3 mm

✍ John P. Hagen; Paul N. Swanson; Robert W. Haas; Fred L. Wefer; Raymond W. Vogt 📂 Article 📅 1971 🏛 Springer 🌐 English ⚖ 992 KB

The 7 March, 1970 total solar eclipse was observed at wavelengths of 3.2 and 8.3 mm; the object being to use the knife edge of the Moon as it passed across the Sun to improve angular resolution on the Sun. This in turn would provide a radial brightness distribution of the Sun with an angular resolut