From quasars to geodesy: how astronomy can enable a new era in ultra-precise geodetic measurements

Project Details

Description

By combining astronomy and geodesy, we will develop a new method to foster the ultra-precise Very Long Baseline Interferometry (VLBI) observations. Geodetic VLBI observations utilize extragalactic radio sources, quasars, as reference points when measuring Earth's shape and orientation in space. Quasars, however, are not point-like sources but their internal structure will degrade the accuracy of the observations and ultimately, accuracy of the final product, the global reference frame. As a result of the project we will develop an automated method to measure and apply the actual structure of the radio source in future VLBI observations which will be a big leap towards the millimetre-accurate global geodetic reference frame.
Short titleNT-VGOS
AcronymNT-VGOS
StatusActive
Effective start/end date01/09/201831/08/2022
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    Lisakov, M. M., Kravchenko, E. V., Pushkarev, A. B., Kovalev, Y. Y., Savolainen, T. K. & Lister, M. L., 20 Mar 2021, In: Astrophysical Journal. 910, 1, 8 p., 35.

    Research output: Contribution to journalArticleScientificpeer-review

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    1 Citation (Scopus)
  • Broadband Multi-wavelength Properties of M87 during the 2017 Event Horizon Telescope Campaign

    Reynolds, M. T., H.E.S.S. Collaboration, MAGIC Collaboration & VERITAS Collaboration, 10 Apr 2021, In: Astrophysical Journal Letters. 911, 1, L11.

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    1 Citation (Scopus)
    20 Downloads (Pure)
  • Constraints on black-hole charges with the 2017 EHT observations of M87∗

    Kocherlakota, P., Rezzolla, L., Falcke, H., Fromm, C. M., Kramer, M., Mizuno, Y., Nathanail, A., Olivares, H., Younsi, Z., Akiyama, K., Alberdi, A., Alef, W., Algaba, J. C., Anantua, R., Asada, K., Azulay, R., Baczko, A. K., Ball, D., Baloković, M., Barrett, J. & 30 others, Benson, B. A., Bintley, D., Blackburn, L., Blundell, R., Boland, W., Bouman, K. L., Bower, G. C., Boyce, H., Bremer, M., Brinkerink, C. D., Brissenden, R., Britzen, S., Broderick, A. E., Broguiere, D., Bronzwaer, T., Byun, D. Y., Carlstrom, J. E., Chael, A., Chan, C. K., Chatterjee, S., Chatterjee, K., Chen, M. T., Chen, Y., Chesler, P. M., Cho, I., Christian, P., Kim, D. J., Ramakrishnan, V., Savolainen, T. & Wagner, J., 20 May 2021, In: Physical Review D. 103, 10, 18 p., 104047.

    Research output: Contribution to journalArticleScientificpeer-review

    Open Access
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    3 Citations (Scopus)
    5 Downloads (Pure)