منابع مشابه
Letter to the Editor Radiance variations of the quiet Sun at far-ultraviolet wavelengths
We have measured the radiance of quiet-Sun areas at the centre of the solar disk using the vacuum-ultraviolet telescope-spectrograph SUMER (Solar Ultraviolet Measurements of Emitted Radiation) on the Solar and Heliospheric Observatory (SOHO). The radiances of selected emission lines have been measured from March 1996 to the present. The lines that have been observed regularly since the beginnin...
متن کاملAnalysis of Limb Brightening on the Quiet Sun at 21 Cm Using a Three-element Interferometer
During the summer, three small radio telescopes (SRTs) were used for observing the Sun during the Sun’s Quiet Phase almost daily over a two month period. We used the three SRTs as a 3-element interferometer to observe the entire Sun. The baselines used were 7.77 meters, 20.12 meters, and 26.67 meters. Data from the Sun were taken and software was used to calculate the visibility amplitudes and ...
متن کاملOLIMPO: A few arcmin resolution survey of the sky at mm and sub-mm wavelengths
OLIMPO is a 2.6 meter on-axis millimeter-wave Cassegrain telescope, mounted on an attitude controlled stratospheric balloon payload. This telescope is designed to be flown with a > 10 days Long Duration CircumPolar flight. The system contains 4 arrays of bolometers in the wavelength bands centered at 150, 220, 350, 600 GHz. The instrument will be diffraction limited at 150 GHz (3.5 arcminutes F...
متن کاملInter-network regions of the Sun at millimetre wavelengths
Context. The continuum intensity at wavelengths around 1 mm provides an excellent way to probe the solar chromosphere and thus valuable input for the ongoing controversy on the thermal structure and the dynamics of this layer. Aims. The synthetic continuum intensity maps for near-millimetre wavelengths presented here demonstrate the potential of future observations of the small-scale structure ...
متن کاملThe quiet-Sun photosphere and chromosphere.
The overall structure and the fine structure of the solar photosphere outside active regions are largely understood, except possibly the important roles of a turbulent near-surface dynamo at its bottom, internal gravity waves at its top and small-scale vorticity. Classical one-dimensional static radiation-escape modelling has been replaced by three-dimensional time-dependent magento-hydrodynami...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1980
ISSN: 0074-1809
DOI: 10.1017/s0074180900036603