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  First M87 event horizon telescope results and the role of ALMA

Goddi, C., Crew, G., Impellizzeri, V., Martí-Vidal, I., Matthews, L. D., Messias, H., et al. (2019). First M87 event horizon telescope results and the role of ALMA. The Messenger, 177, 25-35. doi:10.18727/0722-6691/5150.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-1FB3-F Version Permalink: http://hdl.handle.net/21.11116/0000-0005-1FB4-E
Genre: Journal Article

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 Creators:
Goddi, Ciriaco, Author
Crew, Geoff, Author
Impellizzeri, Violette, Author
Martí-Vidal, Iván, Author
Matthews, Lynn D., Author
Messias, Hugo, Author
Rottmann, Helge, Author
Alef, Walter, Author
Blackburn, Lindy, Author
Bronzwaer, Thomas, Author
Chan, Chi-Kwan, Author
Davelaar, Jordy, Author
Deane, Roger, Author
Dexter, Jason1, Author              
Doeleman, Shep, Author
Falcke, Heino, Author
Fish, Vincent L., Author
Fraga-Encinas, Raquel, Author
Fromm, Christian M., Author
Herrero-Illana, Ruben, Author
Issaoun, Sara, AuthorJames, David, AuthorJanssen, Michael, AuthorKramer, Michael, AuthorKrichbaum, Thomas P., AuthorLaurentis, Mariafelicia De, AuthorLiuzzo, Elisabetta, AuthorMizuno, Yosuke, AuthorMoscibrodzka, Monika, AuthorNatarajan, Iniyan, AuthorPorth, Oliver, AuthorRezzolla, Luciano, AuthorRygl, Kazi, AuthorRoelofs, Freek, AuthorRos, Eduardo, AuthorRoy, Alan L., AuthorShao, Lijing, Authorvan Langevelde, Huib Jan, Authorvan Bemmel, Ilse, AuthorTilanus, Remo, AuthorTorne, Pablo, AuthorWielgus, Maciek, AuthorYounsi, Ziri, AuthorZensus, J. Anton, Author more..
Affiliations:
1Infrared and Submillimeter Astronomy, MPI for Extraterrestrial Physics, Max Planck Society, ou_159889              

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 Abstract: In April 2019, the Event Horizon Telescope (EHT) collaboration revealed the first image of the candidate supermassive black hole (SMBH) at the centre of the giant elliptical galaxy Messier 87 (M87). This event-horizon-scale image shows a ring of glowing plasma with a dark patch at the centre, which is interpreted as the shadow of the black hole. This breakthrough result, which represents a powerful confirmation of Einstein’s theory of gravity, or general relativity, was made possible by assembling a global network of radio telescopes operating at millimetre wavelengths that for the first time included the Atacama Large Millimeter/ submillimeter Array (ALMA). The addition of ALMA as an anchor station has enabled a giant leap forward by increasing the sensitivity limits of the EHT by an order of magnitude, effectively turning it into an imaging array. The published image demonstrates that it is now possible to directly study the event horizon shadows of SMBHs via electromagnetic radiation, thereby transforming this elusive frontier from a mathematical concept into an astrophysical reality. The expansion of the array over the next few years will include new stations on different continents — and eventually satellites in space. This will provide progressively sharper and higher-fidelity images of SMBH candidates, and potentially even movies of the hot plasma orbiting around SMBHs. These improvements will shed light on the processes of black hole accretion and jet formation on event-horizon scales, thereby enabling more precise tests of general relativity in the truly strong field regime.

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Language(s): eng - English
 Dates: 2019-09
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: No review
 Identifiers: DOI: 10.18727/0722-6691/5150
 Degree: -

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Title: The Messenger
  Other : The ESO Messenger
Source Genre: Journal
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Publ. Info: Garching : ESO
Pages: - Volume / Issue: 177 Sequence Number: - Start / End Page: 25 - 35 Identifier: ISSN: 0722-6691