Dr. Sara Issaoun

Now that the storm has calmed down, let me introduce you to the supermassive black hole at the center of our #MilkyWay galaxy, Sagittarius A*! This little troublemaker gave us headaches for over two years, but now we can confidently share its beautiful image! #OurBlackHole #EHT

New images of the M87* black hole from our team!

About 27,000 light years away, with a mass of more than 4 million Suns, lies the Milky Way’s supermassive black hole Sagittarius A*. If you were to approach it, you’d be deceived by its size - the shadow is roughly twice as big as the black hole’s actual surface!⚫️

Ever wonder how to study the nature of spacetime and the edges of physics? These mischievous black holes have a clue! Join the Event Horizon Telescope for #BlackHoleWeek2025, May 5th-9th, as we highlight pieces of the black hole science jigsaw puzzle.🌟

Happy Black Hole Week! This is Messier 87; despite being located about 55 million light years away, the EHT peered at its beating heart in 2017 for its first image. Did you know that the location of the brightest region around the black hole, and its shadow, can change yearly?🔭

One year ago today! Still so so proud of this amazing image and all the work we did with @RicarteAstro and the rest of the team! We're working hard to grow the EHT into an instrument capable of even cooler black hole science!

BHEX 🤝 NRAO So excited for this partnership

🔭 Important Update from the Event Horizon Telescope Collaboration (EHTC): We are responding to a recent reanalysis of our Sagittarius A* black hole image. For more details, please check our official response here:eventhorizontelescope.org/blog/response-… #BlackHole #Science #Astronomy #SgrA #EHT

New EHT test observations have achieved the highest-resolution detections of black holes from Earth. #blackholes #EHT #eventhorizon 1/🧵 Image: Artist's impression showing radio signals from a distant galaxy detected by radio observatories worldwide. Credit: ESO/M. Kornmesser

Celebrating our favorite new spiral donut Sagittarius A* with stickers and crullers! Today has been a real whirlwind but it was such a joy to finally share our beautiful new @ehtelescope results with the world!

The Milky Way in Polarized Light at Multiple Wavelengths captured by Event Horizon Telescope (left), @SOFIAtelescope (center) & @Planck (back) Credit: @SaraIssaoun @ehtelescope

The gorgeous polarized image of Sgr A* is finally out! So so proud of this result, and leading this project alongside @RicarteAstro the last two years has been quite the experience! Look at this beauty!!

A new EHT image of M87* shows that the black hole shadow is still there a year later! This new image is from our 2018 observations 🙏 #blackholes #M87blackhole

The EHT is proud to announce outstanding member contributions in the Early Career, PhD Thesis & Special Merit Awards for 2023. We highlight the 14 awardees according to area of research, concluding with Special Merit: Kazi Rygl

The Event Horizon Telescope Collaboration is proud to announce outstanding member Awards for 2023. We highlight the 14 awardees according to area of research, continuing with Early Career Awards for Official Papers: Sara Issaoun, Ben Prather and Maciek Wielgus

The EHT is proud to announce outstanding member contributions in Awards for 2023. We highlight the 14 awardees according to area of research, continuing with Early Career Awards for Operations: Kevin Koay, Cristina Romero-Cañizales, Sebastiano von Fellenberg and Wei Yu

The EHT is proud to announce outstanding member contributions in the 3rd annual EHT Early Career and Outstanding PhD Awards. We highlight the 14 awardees according to area of research, starting with PhD Awards: Daniel Palumbo, Henrik Muller and Nitika Yadlapalli Yurk

The EHT is proud to announce outstanding member contributions in the 3rd annual EHT Early Career and Outstanding PhD Awards. We highlight the 14 awardees according to area of research, starting with PhD Awards: Alejandro Mus-Meijas, Boris Georgiev & Antonio Fuentes

This animation shows Faraday Conversion, occurring when linearly polarized light passes through a magnetized plasma, which "converts" some of the linear to circular polarization. This effect produces nearly all of the circular polarization around M87*. Credit: Ioannis Myserlis

In this version, the simulation frames are blurred to represent the limited resolution of the EHT, so it cannot resolve all details in the images. The EHT's resolution is set by its observing frequency and the diameter of the Earth-sized "mirror". Credit: Angelo Ricarte

This simulation shows a black hole image in total intensity (or ‘normal’ light, left) and in circular polarization (right). The blue and red colors of the circular polarization movie correspond to light rotating clockwise and counterclockwise, respectively. Credit: Angelo Ricarte