KS
Kirill V. Sokolovsky
4 records found
1
The largest Key Science Program of the RadioAstron space VLBI mission is a survey of active galactic nuclei (AGN). The main goal of the survey is to measure and study the brightness of AGN cores in order to better understand the physics of their emission while taking interstellar
...
RadioAstron gravitational redshift experiment
Status update
A test of a cornerstone of general relativity, the gravitational redshift effect, is currently
being conducted with the RadioAstron spacecraft, which is on a highly eccentric orbit
around Earth. Using ground radio telescopes to record the spacecraft signal, synchronized
to its ul
...
Earth-space interferometry with RadioAstron provides the highest direct angular resolution ever achieved in astronomy at any wavelength. RadioAstron detections of the classic quasar 3C 273 on interferometric baselines up to 171,000 km suggest brightness temperatures exceeding exp
...
Radioastron observations of the quasar 3C 273
A challenge to the brightness temperature limit
Inverse Compton cooling limits the brightness temperature of the radiating plasma to a maximum of 1011.5 K. Relativistic boosting can increase its observed value, but apparent brightness temperatures much in excess of 1013 K are inaccessible using ground-bas
...