A really nice piece by the Milwaukee Journal Sentinel today highlighting some of the work we do at the CGCA. jsonline.com/story/news/202…
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Lia Medeiros PhD
84 posts
Lia Medeiros PhD
@astronolia
Astrophysicist, Professor of Physics at the University of Wisconsin, Milwaukee, member of @ehtelescope, 🇺🇸🇧🇷, she/her
Katılım Nisan 2022
90 Takip Edilen2K Takipçiler
@apogeespace Is this still available somewhere? The link no longer works. I really want one for my office.
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JWST Flat-Pack Poster - AVAILABLE NOW!
Step-by-step instructions for unfolding your new James Webb Space Telescope.
Available at apogeechannel.com/shop
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Thank you Adam Mann, had a great time chatting with you for this interview!
Science News@ScienceNews
The newest image of M87’s supermassive black hole helps confirm Einstein once again. sciencenews.org/article/superm…
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Lia Medeiros PhD retweetledi
“In science, it’s always really important to do the same or similar experiments multiple times." — Hubble Einstein fellow @astronolia
A new image confirms that the M87 black hole is the kind predicted by Einstein's general theory of relativity. bit.ly/48BWPG3
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New image of M87 is out! This is from the 2018 observations and shows that the ring is persistent over time!
Event Horizon 'Scope@ehtelescope
The EHT has released new images of the M87* black hole from observations taken in April 2018. The brightness peak of the ring has shifted by about 30º compared to 2017, consistent with our theoretical understanding of variability from turbulent material around black holes.
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AAS NOVA highlighted our article on the new M87 image with PRIMO! @TodLauer @feryal_ozel @DimitriosPSALT1
AAS Nova@AASNova
Selections from 2023: Sharpening Our Images of a Supermassive Black Hole The first image of a supermassive black hole released in 2019 was far from the last, and new algorithms have brought the data into sharper focus. aasnova.org/2023/12/18/sel…
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George Wong and I built a DIY radio telescope in my garage and saw the 21 cm hydrogen line from the galaxy! Lots of work, but a lot of fun. ias.edu/news/advancing…
Institute for Advanced Study (IAS)@the_IAS
This November, astrophysicists from across the world visited @the_IAS for a workshop focused on improving present understanding of observations from @ehtelescope. The organizers also hosted an observing night, featuring a home-made radio telescope. More: ias.edu/news/advancing…
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For those of you at the virtual @APSphysics meeting, I will be giving a talk at around 10:12 am EST in the EHT session (LL03:3). This talk will include an introduction to the PRIMO algorithm and the recent results as well as a summary of testing gravity results.
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My collaborator and co-author of the PRIMO result @TodLauer wrote a nice thread explaining in more detail what PRIMO does.
Tod R. Lauer@TodLauer
Wanna build a black hole with PRIMO? Here's a little bit of how we do it (skipping most of the math). This is from a paper that Lia Medeiros FA'ed as the lead for developing it. You will use sets of building blocks. Here's one - look closely. Red is + light, blue - light
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Lia Medeiros PhD retweetledi
📡🌍📡 After a few days of bad luck with the weather across the globe, we are starting our 2023 EHT campaign observing supermassive black holes tonight!
Picture (@gopastro ): the LMT on the Sierra Negra in Mexico is getting ready.
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@astronolia Ahhh que interessante, valeu!
Quando você diz frequências são observações em >230 GHz? Ou no uv plane pra baselines longas?
(Desculpa tantas perguntas, é que achei interessante mesmo!)
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So excited to finally share that our paper presenting a new image of M87 is out! See press release here: ias.edu/news/sharper-l… paper here: iopscience.iop.org/article/10.384…
GIF
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@AstroClary wrote a wonderful @astrobites explaining todays paper on the new M87 image, check it out below!
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@thiagosgbr Na original usamos um gaussiano para o beam. Mas aquele gaussiano suprimiu também frequências aonde tínhamos dados, então não estávamos atingindo a resolução máxima do instrumento. Aqui estamos usando um “Butterworth filter” que suprime aonde não temos dados, mas não aonde temos
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@astronolia Oi Lia, muito legal o trabalho!
Posso perguntar como isso funciona? Como observador parece que o tamanho do beam diminui só com o processamento de ML, é isso mesmo? Pra mim parece mágica hahahaha
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@astronolia @the_IAS @NSF @ehtelescope can you please explain why there is a bulge on the left, for the original, but not PRIMO image?
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The team also included @DimitriosPSALT1, sorry I wasn’t able to find your tag this morning!
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The new image of M87 was generated by PRIMO, our new machine learning algorithm (see PRIMO paper here iopscience.iop.org/article/10.384…). @TodLauer @feryal_ozel
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Lia Medeiros PhD retweetledi
The Event Horizon Telescope collaboration has released a new image of the black hole at the center of the M87 galaxy. phys.org/news/2023-04-s…
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Lia Medeiros PhD retweetledi
🆕BLACK HOLE GETS NEW LOOK WITH MACHINE LEARNING. A team led by IAS Member Lia Medeiros (@astronolia) has produced a groundbreaking new image of the M87 black hole, achieving, for the first time, the full resolution of the @ehtelescope. Read more: ias.edu/news/sharper-l…
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