EHT Visibility Amplitude Data of M87* in 2011-2013

We release a data set to accompany the "Monitoring the Morphology of M87 in 2009–2017 with the Event Horizon Telescope" paper (Wielgus et al. 2020). It contains timestamp, telescope codes, u-v coordinates, debiased visibility amplitude, and estimated RMS uncertainty of M87 data from the Event Horizon Telescope (EHT)'s 2011, 2012, and 2013 observation campaign. The data set is made public simultaneously with Wielgus et al. (2020). The 2009 data set was previously used in Doeleman et al. (2012) and can be found here: http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=J/other/Sci/338.355 . The 2012 visibility amplitude data set was previously used in Akiyama et al. (2015), but has been now updated (see Wielgus et al. for details) and is republished. The 2012 closure phase data set did not change and can be found here: http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=J/ApJ/807/150 . The 2011 and 2013 data were never published before. Details of the data processing are documented in section 2 of Wielgus et al. (2020). The paper also uses EHT's 2017 data, which was described in details in EHTC et al. (2019).

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Additional Info

Field Value
Author The Event Horizon Telescope Collaboration
Last Updated September 10, 2026, 18:02 (UTC)
Published April 8, 2026, 06:52 (UTC)
Citation The Event Horizon Telescope Collaboration 2020. EHT Visibility Amplitude Data of M87* in 2011-2013. CyVerse Data Commons. DOI 10.25739/daft-jz11
de_created_date 2020-09-21T22:32:55Z
de_modified_date 2020-09-21T23:00:00Z
ehtDataProductCode 2020-D03-01
identifierType DOI
publisher CyVerse Data Commons
resourceType Very-long-baseline interferometry (VLBI) Visibility Data