ICRF3 is the third major revision of the ICRF, and was adopted by the IAU in August 2018 and became effective 1 January 2019. The modeling incorporates the effect of the galactocentric acceleration of the solar system, a new feature over and above ICRF2.

2015年11月25日 · The goal of this presentation is to report the latest progress in creation of the next generation of VLBI-based International Celestial Reference Frame, ICRF3. Two main directions of ICRF3 development are improvement of the S/X-band frame and extension of the ICRF to higher frequencies.

2020年10月26日 · This new realization, referred to as ICRF3, is based on nearly 40 years of data acquired by very long baseline interferometry. The ICRF3 includes positions at 8.4 GHz for 4536 sources, supplemented with positions at 24 GHz for 824 sources and at 32 GHz for 678 sources, for a total of 4588 sources.

2021年4月30日 · The new frame, referred to as ICRF3, is based on nearly 40 years of data acquired by very long baseline interferometry at the standard geodetic and astrometric radio frequencies (8.4 and 2.3 GHz), supplemented with data collected at higher radio frequencies (24 GHz and dual-frequency 32 and 8.4 GHz) over the past 15 years.

The new frame, referred to as ICRF3, is based on nearly 40 years of data acquired by very long baseline interferometry at the standard geodetic and astrometric radio frequencies (8.4 and 2.3 GHz), supplemented with data collected at higher radio frequencies (24 GHz and dual-frequency 32 and 8.4 GHz) over the past 15 years.

We propose a 3rd generation radio-based International Celestial Reference Frame (ICRF- 3) to improve upon the highly successful ICRF-2. Our goals are to improve the precision as well as the spatial and frequency coverages relative to the ICRF-2 by 2018.

We propose a 3rd generation radio-based International Celestial Reference Frame (ICRF- 3) to improve upon the highly successful ICRF-2. Our goals are to improve the precision as well as the spatial and frequency coverages relative to the ICRF-2 by 2018.

2015年7月2日 · We propose a 3rd generation radio-based International Celestial Reference Frame (ICRF- 3) to improve upon the highly successful ICRF-2. Our goals are to improve the precision as well as...

2014年12月1日 · We propose a 3rd generation radio-based International Celestial Reference Frame (ICRF3) to improve upon the highly successful ICRF-2. Our goals are to improve the precision as well as the spatial and frequency coverages relative to the ICRF-2 by 2018.

ICRF-3: Work towards ICRF3 began with the creaon of an IAU Working Group in 2012. Goals were: • Improve upon the precision of ICRF2, especially for the ‘VCS’ sources. • Increase the number of sources. • Provide for a frame =e and accuracy …