... During the analysis of the surveys carried out on RATAN-600, it was found that almost one fifth of the detected sources shows significant radio flux variations. ... We used the data from "Cold" radio surveys carried out with RATAN-600 in 1980-1994 to search for radio sources with significant flux variability. ... On possibility of detection of variable sources using the data of Cold surveys carried out on RATAN-600. ... Detection of Variable Sources Using the Data of "Cold" Surveys. ...

Next: An example of Up: Association of images Previous: Association of images . The two sets of selection criteria (``first choice'' and ``second choice'') have to be entered in a table containing four columns: . FUNCTION --character column (max 256 char) . This column defines the different selection criteria and shall contain mathematical expressions in which the variables may be the columns of the OST. ... RANGE_1 --character column (max 256 char) . ... WEIGHT --real column . ...

Application of IVOA software tools for radio sources investigation Zhelenkova O., Kopylov A., Chernenkov V. The interrelationship between the objects of astronomical catalogs in the different ranges of electromagnetic spectrum and their association into the real astrophysical source has obvious scientific interest. ... We used NVSS as the reference coordinate catalog. ... For 60% of radio sources identified with the objects of the radio catalogs we discovered optical candidates in SDSS survey. ...

The project of the informational system creation on the problem of evolution of radio galaxies, as a part of the "Big Trio" project aimed on studing of distant radio galaxies, is designed. This system allows a user to operate with simulated curves of spectral energy distributions (SED) to estimate ages and redshifts by photometry data. Authors use SEDs of several models for different types of galaxies. ... The HTTP and e-mail access is organized to this system. ...

... Corresponding gates in each row are connected in parallel at both edges of the array. ... Other gates. ... otherwise indicated, 45 kpixels/sec and standard voltages using a dual slope CDS circuit (8 µs integration time) Minimum Format Pixel Size Imaging Area Dark current (MPP), 20° C equivalent Readout noise Front Back Full Well signal Output gain CTE per pixel Typical 512 x 512 pixels 24 µm x 24 µm 12.3 mm x 12.3 mm 50 pa/cm2 5 electrons 7 electrons 350,000 electrons 1.5 µV/ electron 0 ...