# astro: black hole portraits will become more frequent

<< This year marks the fifth anniversary of the release of the first-ever image of a black hole, which revealed the glowing doughnut of the supermassive black hole called M87*. The research team that produced the image—the Event Horizon Telescope (EHT) Collaboration—recently released a second image of that same black hole, which lies 55 million light years from Earth (..). This image comes from an updated version of the EHT and confirms key features of the black hole while also revealing changes over time in the pattern of light emanating from the disk surrounding the object. Starting with this release, the collaboration expects to issue increasingly frequent updates in support of the newly developing field of black hole imaging. >>️

<< “Producing the first image of M87* was a herculean effort and involved creating, testing, and verifying many different schemes and approaches to analyzing and interpreting the data,” says Princeton University astrophysicist Andrew Chael, a member of the EHT Collaboration. “Now we are beginning to transition to a point where we understand our instrument and our analysis frameworks really well, so I think we are going to be releasing results a lot more quickly.” >>

️

Katherine Wright. Black Hole Portraits Will Become More Frequent. Physics 17, 43. Mar 15, 2024. 

https://physics.aps.org/articles/v17/43

Kazunori Akiyama, Antxon Alberdi, et al. The persistent shadow of the supermassive black hole of M 87. 

I. Observations, calibration, imaging, and analysis⋆ The Event Horizon Telescope Collaboration. Astron. Astrophys. 681, A79 (2024).

https://www.aanda.org/articles/aa/full_html/2024/01/aa47932-23/aa47932-23.html

Also: astrophysics, black hole, in https://www.inkgmr.net/kwrds.html 

Keywords: astrophysics, black hole