Results 101 to 110 of about 822 (179)

Automated Modeling with AAP-Imfit: Astrometry and Photometry via CASA

The Astrophysical Journal
Very long baseline interferometry (VLBI) provides the highest-resolution radio intensity maps, crucial for detailed studies of compact sources like active galactic nuclei (AGNs) and their relativistic jets.
Alfredo Amador-Portes, Eva Palafox, Víctor M. Patiño-Álvarez, Vahram Chavushyan, Andrei P. Lobanov, Sergio A. Dzib   +5 more
doaj   +1 more source

A pilot very long baseline interferometry study of the SQUAB quasar sample featuring multiple Gaia detections

Astronomy & Astrophysics
Context. Our previous work identified a class of SDSS quasars with multiple Gaia detections, classifying them as candidates for various astrophysical systems, such as quasar–star pairs, dual quasars, and gravitationally lensed quasars.
Zhang Y., An T., Ji X., Zheng Z., Liu Y., Wu Q., Lin R., Liao S.   +7 more
doaj   +1 more source

VLBI Astrometry

, 2003
Latex, 6 pages, 8 figures; Invited Review Talk at the ``ADeLA2002 - Astrometry in Latin America'' Conference, Araraquara - Sao Paulo, 2 - 5 September 2002, to be published in ADeLA Publications Series, Vol.
openaire   +2 more sources

Estimation of Earth Rotation Parameters Based on BDS-3 and Discontinuous VLBI Observations

Remote Sensing
Earth rotation parameters (ERPs) are fundamental to geodetic and astronomical studies. With its high measurement accuracy and stability, the Very Long Baseline Interferometry (VLBI) plays an irreplaceable role in estimating the ERPs and maintaining the ...
Chenxiang Wang, Jizhang Sang, Xingxing Li, Pengfei Zhang   +3 more
doaj   +1 more source

Sphero-Conical Modeling for the Estimation of Very Long Baseline Interferometry Invariant Point. [PDF]

Sensors (Basel), 2022
Bae TS, Hong CK.
europepmc   +1 more source

Adaption of the VLBI Standard Interface to the K5 VLBI System

Adaption of the VLBI Standard Interface to the K5 VLBI System
資料番号 ...
openaire   +1 more source

Deep Very Long Baseline Interferometry Constraints on Compact Radio Cores in Four Ultraluminous X-Ray Sources

The Astrophysical Journal
We present high-sensitivity very long baseline interferometry (VLBI) observations of four ultraluminous X-ray sources (ULXs): Holmberg II X-1, IC 342 X-1, NGC 6946 X-1, and NGC 925 X-1.
Ailing Wang, Hua Feng, Tao An, Yijia Zhang, Jun Yang, Roberto Soria, Lian Tao, Thomas Russell, Jing Guo, Liang Zhang   +9 more
doaj   +1 more source

Probing a southern hemisphere VLBI Intensive baseline configuration for UT1 determination. [PDF]

Earth Planets Space, 2022
Böhm S, Böhm J, Gruber J, Kern L, McCallum J, McCallum L, McCarthy T, Quick J, Schartner M.   +8 more
europepmc   +1 more source

The Australian mixed-mode observing program. [PDF]

J Geod, 2022
McCallum L, Chin Chuan L, Krásná H, McCallum J, Böhm J, McCarthy T, Gruber J, Schartner M, Quick J, Rogers A.   +9 more
europepmc   +1 more source

Milliarcsecond-resolution Radio-imaging Survey of Blazar Candidates at 4 < z < 5.4

The Astrophysical Journal Supplement Series
We present a milliarcsecond-resolution radio survey of 17 high-redshift (4 ≤ z ≤ 5.4) blazar candidates observed with the European Very Long Baseline Interferometry (VLBI) Network at 5 GHz.
Máté Krezinger, Alessandro Caccianiga, Daniele Dallacasa, Luca Ighina, Sándor Frey, Alberto Moretti, Sonia Antón, Silvia Belladitta, Claudia Cicone, Krisztina É. Gabányi, M. J. M. Marchã, Krisztina Perger   +11 more
doaj   +1 more source