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We present the first section of a radio continuum and polarization survey at medium Galactic latitudes carried out with the Effelsberg 100-m telescope at 1.4 GHz. Four large fields have been observed, which all together cover an area of about 1100 ⊓ ⊔. The rms-sensitivity is about 15 mK T B (about 7 mJy/beam area) in total intensity and is limited by(More)
We describe the equipment, observational method and reduction procedure of an absolutely calibrated radio continuum survey of the South Celestial Hemisphere at a frequency of 1420 MHz. These observations cover the area 0 h ≤ R.A. ≤ 24 h for declinations less than −10 •. The sensitivity is about 50 mK TB (full beam brightness) and the angular resolution(More)
Accepted xx xx xx. Received yy yy yy; in original form zz zz zz ABSTRACT Polarized diffuse emission observations at 1.4-GHz in a high Galactic latitude area of the northern Celestial hemisphere are presented. The 3.2 • × 3.2 • field, centred at RA = 10 h 58 m , Dec = +42 • 18 ′ (B1950), has Galactic coordinates l ∼ 172 • , b ∼ +63 • and is located in the(More)
We present the broad band, radio-to-X-ray, properties of a large sample of mostly previously optically unidentified radio-loud X-ray sources from the correlation of a ROSAT All-Sky Survey source list with the 5 GHz Green Bank Survey of the northern sky (RGB sample) which is one of the largest well-defined flux-limited surveys of AGN ever obtained. Further ,(More)
The possibility of a correlation between the radio (cm)-and γ-ray luminosity of variable AGN seen by EGRET is investigated. We perform Monte-Carlo simulations of typical data sets and apply different correlation techniques (partial correlation analysis, χ 2-test applied on flux-flux relations) in view of a truncation bias caused by sensitivity limits of the(More)
Using our own observations at 45 MHz and data found in the literature after an exhaustive search, we have attempted a comprehensive study of the integrated flux density spectrum of the Centaurus A radio galaxy and of its large scale components. The spectrum for the whole object, between 10 and 4750 MHz, can be well represented by a power law with a spectral(More)
The relationship between greenhouse gas emission and climate change has led to research to identify and manage the natural sources and sinks of the gases. CO2, CH4, and N2O have an anthropic source and of these CO2 is the least effective in trapping long wave radiation. Soil carbon sequestration can best be described as a process of removing carbon dioxide(More)
A radio continuum survey at medium Galac-tic latitudes with the Effelsberg 100-m telescope is being carried out at a centre frequency of 1.4 GHz in total power and linear polarization. Areas up to ±20 • of Galactic latitude are now being observed at a sensitivity of 15 mK T B in total intensity and 8 mK T B in linear polarization with an angular resolution(More)
We present preliminary results from mapping the high-latitude Galactic polarization with the Effelsberg Telescope at λ21 cm. Structures on the resulting maps are mostly on the scale of several degrees. The results show detection of polarization over most of the field, at the level of tens of percent of the synchrotron emission. The evidence of more(More)