Selecting defining sources for the next ICRF based on source structure

Details Selecting defining sources for the next ICRF based on source structure Selecting defining sources for the next ICRF based on source structure

Apr 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008jsrs.meet....8c&link_type=abstract

"Proceedings of the "Journées Systèmes de Référence Spatio-temporels 2007". Observatoire de Paris, 17-19 September 2007. Editor:

Other

4

Scientific paper

The intrinsic radio structure of the extragalactic sources is one of the limiting errors in the definition of the International Celestial Reference Frame (ICRF). This paper reports about the ongoing work to monitor the structural evolution of the ICRF sources by using the Very Long Baseline Array and other VLBI telescopes around the world. Based on more than 5000 VLBI images produced from such observations, we have assessed the astrometric suitability of 80% of the ICRF sources. The number of VLBI images for a given source varies from 1 for the least-observed sources to more than 20 for the intensively-observed sources. From this analysis, we identify a subset of 194 sources that are highly compact at any of the available epochs. Such sources are prime candidates to define the next ICRF with the highest accuracy.

Affiliated with

Also associated with

No associations

Rating

Selecting defining sources for the next ICRF based on source structure does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Selecting defining sources for the next ICRF based on source structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Selecting defining sources for the next ICRF based on source structure will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1704997