'Jittering' Map (image) Moscow Institute of Physics and Technology Share Print E-Mail Caption A map showing the characteristic values of the "jittering" of source coordinates around their true position caused by the Galaxy's "gravitational noise", in microarcseconds (shown in contours) for a ten-years observation period. The crosses represent the positions of ICRF reference sources. Credit MIPT Press Office Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.