fosstodon.org is one of the many independent Mastodon servers you can use to participate in the fediverse.
Fosstodon is an invite only Mastodon instance that is open to those who are interested in technology; particularly free & open source software. If you wish to join, contact us for an invite.

Administered by:

Server stats:

10K
active users

#EHT

0 posts0 participants0 posts today

EHT Reveals New Insights of Jets from Supermassive Black Holes. ALMA is a big part of EHT, and in this case provided the most accurate calibration for the observations, which was used later for the longer baselines between EHT telescopes.

ps. IAA-CSIC plays a strong role in EHT and this news, and is where I got my Ph.D., so this is doubly important for me.

almaobservatory.org/en/audienc

Here is a first statement by the #EHT collaboration on Miyoshi et al 2024. There are numerous misleading statements about EHT data analysis (which involved multiple groups and multiple methods, addressing in depth all issue) and the image processing has basic flaws. As presented the image is not reproducible nor does he show any synthetic data tests that would make one believe his approach is reliable in this case. More analysis to follow.
#astrodon #astronomy
eventhorizontelescope.org/blog

eventhorizontelescope.orgResponse to An Independent Analysis of EHTC Imaging of Sgr A* by Miyoshi et al. 2024 | Event Horizon Telescope

Interesting, the new Miyoshi paper has some pretty strong words about the EHT data "suggesting that the EHT 2017 u-v coverage is insufficient for reliable imaging" or "possible that the data are corrupted to the degree that the shape [...] cannot be determined from the residual analysis of the closure quantity". They do not see a ring but a strong peak, possibly offset from the black hole location.
#BlackHole #EHT #SgrA*
astrodon.social/@cosmos4u@scic

astrodon.socialAstrodon - The Astro Community

EHT-Wissenschaftler machen die bisher schärfsten Beobachtungen von der Erdoberfläche aus
Die Event Horizon Telescope (#EHT) Collaboration hat Testbeobachtungen mit dem Atacama Large Millimeter/submillimeter Array (ALMA) und anderen Teleskopen durchgeführt, die die höchste Auflösung erreichten, die jemals von der Erdoberfläche aus erzielt wurde. Eine Pressemitteilung des ESO Science Outreach Network (ESON). (Quelle: ESO/M. Kornmesser) ##schwarzelöcher
raumfahrer.net/eht-wissenschaf