Speaker
Dr
Karine Le Bail
(NVI, Inc.)
Description
ICRF2 was adopted by the IAU in 2009 and was based on the position of 3414 radio sources determined by VLBI. Discussions on the next realization of the ICRF (ICRF3) have been underway within the IAU and IVS since 2012. VLBI has made significant advances since ICRF2.
From the latest GSFC solution, we extract a set of sources that defines a stable celestial reference frame, as shown by M. Feissel-Vernier 2003 (A&A) using tools such as the Allan variance and the drift of the position time series. This method also allows us to highlight a set of the least "stable" sources that may need special handling.
Primary author
Dr
Karine Le Bail
(NVI, Inc.)
Co-authors
Dr
Chopo Ma
(NASA Goddard Space Flight Center)
Dr
David Gordon
(NVI Inc./GSFC)
