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de Witt, Aletha
30  Ergebnisse:
Personensuche X
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1

The Celestial Reference Frame at K Band: Imaging. I. The Fi..:

de Witt, Aletha ; Jacobs, Christopher S. ; Gordon, David...
The Astronomical Journal.  165 (2023)  4 - p. 139 , 2023
Link: https://doi.org/10.3847/..
 
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2

Position and Proper Motion of Sagittarius A* in the ICRF3 F..:

Gordon, David ; de Witt, Aletha ; Jacobs, Christopher S.
The Astronomical Journal.  165 (2023)  2 - p. 49 , 2023
Link: https://doi.org/10.3847/..
 
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3

Astrometric Apparent Motion of High-redshift Radio Sources:

Titov, Oleg ; Frey, Sándor ; Melnikov, Alexey...
The Astronomical Journal.  165 (2023)  2 - p. 69 , 2023
Link: https://doi.org/10.3847/..
 
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4

Overview and Status of the International Celestial Referenc..:

de Witt, Aletha ; Charlot, Patrick ; Gordon, David.
Universe.  8 (2022)  7 - p. 374 , 2022
Link: https://doi.org/10.3390/..
 
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5

A Retrospective of the SA-Mexico Bilateral Programme on Wat..:

, In: 2022 International Conference on Electromagnetics in Advanced Applications (ICEAA),
Stander, Tinus ; Villiers, Dirk I. L. de ; Witt, Aletha de... - p. 282-286 , 2022
Link: https://doi.org/10.1109/..
 
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6

High-resolution radio astronomy: An outlook for Africa:

Gurvits, Leonid I. ; Beswick, Robert ; Hoare, Melvin...
Proceedings of the International Astronomical Union.  15 (2019)  S356 - p. 137-142 , 2019
Link: https://doi.org/10.1017/..
 
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7

Astrometric Apparent Motion of High-redshift Radio Sources:

Titov, Oleg ; Frey, Sandor ; Melnikov, Alexei...
http://arxiv.org/abs/2302.12957.  , 2023
Link: http://arxiv.org/abs/230..
 
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8

The K-band (24 GHz) Celestial Reference Frame: Current Stat..:

de Witt, Aletha ; Gordon, David ; Jacobs, Chris...
doi:10.5281/zenodo.8077416.  , 2023
Link: https://zenodo.org/recor..
 
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9

Imaging of more than 730 K-band celestial reference frame s..:

de Witt, Aletha ; Nickola, Marisa ; Jacobs, Christopher..
doi:10.5281/zenodo.8279096.  , 2023
Link: https://zenodo.org/recor..
 
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10

The K-band (24 GHz) Celestial Reference Frame determined fr..:

Krasna, Hana ; Gordon, David ; de Witt, Aletha.
http://arxiv.org/abs/2306.09747.  , 2023
Link: http://arxiv.org/abs/230..
 
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11

Imaging, modelfitting and source structure corrections for ..:

de Witt, Aletha ; Jacobs, Chris ; Gordon, David...
doi:10.5281/zenodo.8077457.  , 2023
Link: https://zenodo.org/recor..
 
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12

Imaging and Structure Analysis of ICRF Sources at X- and K-..:

de Witt, Aletha ; Jacobs, Chris ; Gordon, David..
doi:10.5281/zenodo.7072515.  , 2022
Link: https://zenodo.org/recor..
 
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13

Current Celestial Reference Frame Status at X/S and K Bands:

Gordon, David ; de Witt, Aletha ; Jacobs, Christopher S..
doi:10.5281/zenodo.7068295.  , 2022
Link: https://zenodo.org/recor..
 
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14

Position and Proper Motion of Sagittarius A* in the ICRF3 F..:

Gordon, David ; de Witt, Aletha ; Jacobs, Christopher S
http://arxiv.org/abs/2212.00632.  , 2022
Link: http://arxiv.org/abs/221..
 
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15

Comparing Images of ICRF Sources at S, X, K, and Q-band:

Hunt, Lucas ; de Witt, Aletha ; Jacobs, Christopher..
doi:10.5281/zenodo.7068277.  , 2022
Link: https://zenodo.org/recor..
 
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