The Second Extension of the International Celestial Reference Frame: ICRF-EXT.1

By A. Fey, Chopo Ma, E. Arias, P. Charlot, M. Feissel-Vernier, A. Gontier, Christopher S. Jacobs, Jinling Li, D. MacMillan. 2004

193 citations recorded by the source corpus.

Subfields: Aerospace Engineering, Computational Mechanics, Oceanography

View Paper: https://www.semanticscholar.org/paper/6ccd73b0e9cb481c191aebcb55cb941b9f2f248b

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Citations in the corpus

The Australia Telescope 20 GHz Survey: the source catalogue (2009, methodology): “The calibration term was estimated by comparison with the the International Celestial Reference Frame (ICRF) defining calibrators (Fey et al. 2004).”
The second epoch Molonglo Galactic Plane Survey: compact source catalogue (2007, methodology): “As an additional check we compared the positions of the International Celestial Reference Frame (ICRF) defining calibrators (Fey et al. 2004) (of which there are 40 withδ < −30◦) with the corresponding SUMSS and MGPS-2 sources.”
The VLA-COSMOS Survey. II. Source Catalog of the Large Project (2006, background): “Its positional accuracy is better than 0.01′′ (VLA Calibrator Manual 2003); the positional difference is less than 0.001′′ between coordinates listed in the VLA Calibrator Manual and its ICRF (International Celestial Reference Frame; Fey et al. 2004) position.”
THE TRIGONOMETRIC PARALLAX OF CYGNUS X-1 (2011, methodology): “In order to calibrate atmospheric propagation delays, we scheduled “geodetic blocks” consisting of typically a dozen ICRF sources (Fey et al. 2004) observed over a wide range of source azimuths and elevations as described in Reid et al. (2009a).”
THE SECOND REALIZATION OF THE INTERNATIONAL CELESTIAL REFERENCE FRAME BY VERY LONG BASELINE INTERFEROMETRY (2015, methodology): “Two extensions, adding 109 additional sources [Fey et al., 2004] were later made using several years of newer VLBI data, including the first of a series of Very Long Baseline Array (VLBA) Calibrator Surveys (VCS) [Beasley et al., 2002].”
FERMI LARGE AREA TELESCOPE GAMMA-RAY DETECTION OF THE RADIO GALAXY M87 (2009, background): “Theγ-ray source is positionally coincident with the known radio position ofthe M87 core (RA = 187◦.706, Dec. = 12◦.391; Fey et al. 2004), with an offset (0◦.020 = 1.2′) that is a small fraction of the localization circle.”
SEARCH FOR COSMIC-RAY-INDUCED GAMMA-RAY EMISSION IN GALAXY CLUSTERS (2013, background): “• For Abell 1367, our best-fit position is consistent with that of the radio galaxy 3C264 (Fey et al. 2004).”
Further calibration of the Swift ultraviolet/optical telescope (2010, methodology): “We have provided a correction for the detector distortion and measured the resulting internal astrometric accuracy of the UVOT, also giving the absolute accuracy with respect to the International Celestial Reference System.”
The third realization of the International Celestial Reference Frame by very long baseline interferometry (2020, background): “Two ICRF extensions, ICRF-Ext.1 and ICRF-Ext.2, were constructed in 2000 and 2002, adding another 109 sources to the frame (Fey et al. 2004).”
TRIGONOMETRIC PARALLAXES OF MASSIVE STAR-FORMING REGIONS. I. S 252 & G232.6+1.0 (2008, methodology): “…sequence were determined by computer code with the following procedure: We generated a candidate source list starting with the ICRF catalog (Fey et al. 2004) and keeping only the 60 sources that had been observed more than 1000 times, had coordinate uncertainties less than 1 mas, and had…”
A VLBA survey of the core shift effect in AGN jets - I. Evidence of dominating synchrotron opacity (2011, methodology): “…the group delay technique at any frequency (such as those currently used to define the the International Celestial Reference Frame, ICRF, Ma et al. 1998, Fey et al. 2004, and ICRF2, Fey et al. 2010) corresponds to the jet base, not to the radio core position at a given frequency (Porcas 2009).”
Astrometry of H2O Masers in Nearby Star-Forming Regions with VERA II SVS 13 in NGC 1333 (2008, background): “In addition, there is a bright ICRF (International Celestial Reference Frame) source, J0336+3218, which is separated from SVS 13 by an angle of 1:ı89 (Fey et al. 2004).”
Opacity in compact extragalactic radio sources and its effect on astrophysical and astrometric studies (2008, methodology): “At present, the Internatio l Celestial Reference System (ICRS) is realized primarily by the International Celestial Reference Frame (ICRF, Ma et al. 1998; Fey et al. 2004) based on very long baseline interferometry (VLBI) measurements at 2.3 GHz (13 cm band) and 8.6 GHz (3.6 cm band).”