Dimitrios PSALTIS

astrophysics and machine-learning enthusiast

[Dimitrios PSALTIS @DimitriosPSALT1]

New paper on ML black hole image reconstruction with @feryal_ozel, @TodLauer, and Lia Medeiros showing that, in many cases, interpretable AI is within reach. #MachineLearning #Blackholes
https://t.co/IZaXF88cSM

[Dimitrios PSALTIS @DimitriosPSALT1]

When you devise a new ML algorithm, it is important to understand why it works and why it does not hallucinate.

[Dimitrios PSALTIS @DimitriosPSALT1]

Remarkable new paper by my postdoc Matt Golden, with a novel algorithm for model discovery in physics. Training that would have taken the age of the universe to complete with prior algorithms can now be achieved in a day. #machinelearning #physics

https://t.co/8d7wNct5xj

[U.S. National Science Foundation @NSF]

Remember that historic first image of a black hole, called M87*? Well, it just got a makeover with the help of AI.

Check out its sharp new look!

https://t.co/VEoRqZf9CL

#NSFfunded @ehtelescope @GeorgiaTech @the_IAS @NOIRLabAstro

📷: Medeiros et al. 2023

[Feryal Ozel @feryal_ozel]

Meet the new and improved image of the M87 black hole! My former student @astronolia, colleagues @DimitriosPSALT1 @TodLauer and I spent several years developing ML techniques to fill in the missing information smarter and obtain a sharper image. https://t.co/ZSJWx3DjAh

[U.S. National Science Foundation @NSF]

#YearInReview: Here are some of our most popular Twitter stories of 2022! (In no particular order)

First up: NSF-supported @ehtelescope revealed the FIRST image of the supermassive black hole at the center of our Milky Way galaxy: https://t.co/iT1AWBZcuU #ourblackhole #bye2022

[Tod R. Lauer @TodLauer]

A little advert for PRIMO https://t.co/JxbPH77ur3 a new algorithm for the reconstruction of images of BHs from EHT interferometric observations. The image shows simulated results. UL is a high fidelity GR+MHD simulation at 1.3mm of an accreting BH of the mass and distance of M87.

[Feryal Ozel @feryal_ozel]

Starting a new 🧵to answer your burning questions about the image of Sagittarius A* here! I’ll keep on adding more FAQs so feel free to post additional questions below.

[Dimitrios PSALTIS @DimitriosPSALT1]

Why the real pictures of black holes do not look similar to the ones in movies like Interstellar
https://t.co/2muhAnXyqC

[Feryal Ozel @feryal_ozel]

Y’all.. if you haven’t yet, take one minute to travel from the Earth to the Center of our Galaxy with this amazing video. Produced by John Dickie, original music by my ultra talented friend ⁦@parityflux⁩ John Krikawa, narrated by Carolyn Raithel. https://t.co/535wh0E729

[Feryal Ozel @feryal_ozel]

Let’s be honest… it was always about the donuts… with @nsf director Dr. Sethuraman Panchanathan

[Feryal Ozel @feryal_ozel]

I’m so grateful to share this moment with my partner in crime.

[Feryal Ozel @feryal_ozel]

A wonderful moment when we shared the image with the world.

[Feryal Ozel @feryal_ozel]

Enjoy this beautiful experience, a journey to the black hole in the center of our galaxy.

https://t.co/535wh0mwaB

@uarizona @BHPIRE #OurBlackHole

[Feryal Ozel @feryal_ozel]

While we did most of our work remotely, nothing replaces a f2f interaction to work out the most challenging details. North American #EHTmeeting @uarizona
Image credits: CK Chan

[Feryal Ozel @feryal_ozel]

Meet the team!

https://t.co/C8u4NUwrI9

@ehtelescope

[Feryal Ozel @feryal_ozel]

The wait is over. Meet the black hole at the center of our galaxy.

#OurBlackHole

[Feryal Ozel @feryal_ozel]

The beautiful poster from @nsf for Thursday’s press conference. Also live feed for those who won’t be able to attend!

[Feryal Ozel @feryal_ozel]

On our way to DC for the press conference on Thursday. Counting down! ⁦@NSF⁩ ⁦@ehtelescope⁩ ⁦@BHPIRE⁩

[Chi-kwan Chan @rndsrc]

@ehtelescope Well... here are 2PB of data taken at Kitt Peak and SMT @ARoshanineshat @weblogarithms @SaraIssaoun