Radio observations of DR15 at 408, 1407 and 2695 MHz
نویسندگان
چکیده
منابع مشابه
A 98 % spectroscopically complete sample of the most powerful equatorial radio sources at 408 MHz
A new sample of very powerful radio galaxies is defined from the Molonglo Reference Catalogue, according to the criteria S408MHz > 5 Jy, −30 ◦ ≤ δ ≤ 10◦ and |b| ≥ 10◦. The sample is selected to have similar properties to the northern 3CR revised sample, and to be visible to a combination of existing northern telescopes such as the Very Large Array radio interferometer and the new 8-m class sout...
متن کاملThe 408 MHz B 3 . 2 survey
We present a new 408MHz survey (B3.2) carried out with the “Croce del Nord” radiotelescope in Bologna. The survey coordinates limits are −2◦00′ to +2◦15′ in Dec. and 21h to 24h, 00h to 17h in R.A., equivalent to 0.388 sr. The B3.2 is complete to 0.15 Jy but many sources down to 0.1 Jy are included. Our aim was to select a new and complete sample of Ultra Steep Spectrum (USS) radio sources, as t...
متن کاملThe 408 MHz B 3 . 1 Survey
We present a new 408 MHz survey (B3.1) carried out with the " Croce del Nord " radiotelescope in Bologna. The survey coordinates limits are −2 • 00 ′ to +2 • 15 ′ in Dec. and 21h to 24h, 00h to 17h in R.A., equivalent to 0.388 sr. The B3.1 is complete to 0.15 Jy but many sources down to 0.1 Jy are included. Our aim was to select a new and complete sample of Ultra Steep Spectrum (USS) radio sour...
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One day in the 1980’s I was helping a visiting scientist get his experiment set up at a remote site to the west of Ottawa. This site contained the decaying remains of decades of radio experiments. Among some trees I found an old shed, crammed to the roof with yagi antennas, combiners, hybrids and many matched lengths of heliax coaxial cable. Many were broken, but mixed in with the debris were s...
متن کاملMedium Access Probability of Cognitive Radio Network at 1900 MHz and 2100 MHz
Conventionally fading analysis of wireless LAN or MAN means small scale fading i.e. wide fluctuation of received signal with small variation of time and distance. In analysis of fading channel we consider the received signal in power, voltage or SNR as a random variable then statistical probability density function (pdf) like Rayleigh, Rician or Nakagami-m is used to get the probability of diff...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1980
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/192.3.377