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fediboard_science
FediBoard Science @fediboard_science@flipboard.social · 3d ago
Finding seven quasars in 800,000 galaxies: the challenge of weighing the universe's hungriest black holes https://www.universetoday.com/articles/seven-needles-800000-haystacks A quasar is a supermassive black hole in the act of feeding, and it’s so bright that it drowns out the galaxy it sits in. That is a nuisance if you want to weigh the galaxy and weighing it is exactly… #science #blackholes #astrophysics
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Scientific American @scientific_american@robot.villas · Jul 29, 2026
Astronomers spot best-yet example of a wandering supermassive black hole https://www.scientificamerican.com/article/astronomers-spot-best-yet-example-of-a-wandering-supermassive-black-hole/ #Astronomy #BlackHoles #Science
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ec_euclid
Euclid Consortium @ec_euclid@mastodon.social · Jul 06, 2026
#Euclid scientists identified 31 new early Universe quasars, including the two most distant quasars currently known. The new record holder's redshift z=7.77 places it only 670 million years after the Big Bang. https://www.euclid-ec.org/most-distant-quasars/ #ESA #ESAEuclid #astronomy #blackholes #science
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ec_euclid
Euclid Consortium @ec_euclid@mastodon.social · Jul 06, 2026
Replying to @ec_euclid@mastodon.social
With this first collection, #Euclid starts dominating the search for early Universe #quasars. This is no wonder: Euclid's wide survey provides unprecedented sensitivity at wavelengths into the near-infrared, which are key to identifying these rare accreting early black holes. Forecasts predict that in Euclid data even earlier quasars should be found: likely beyond z=8 (650 million years after the Big Bang) and possibly even z=9 (550 million years). #astronomy #ESAEuclid #ESA #blackholes
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astrodisastro
Francesca Bo. @astrodisastro@scicomm.xyz · Apr 08, 2026
RE: https://mastodon.social/@ehtelescope/116365375880098666 Perfino quell'upupa ha una carriera scientifica migliore della mia Even that hoopoe has a better scientific career than me #birb #upupa #uccelli #astrofisica #BuchiNeri #eht #hoopoe #birds #astrophysics #BlackHoles #BirdsOfMastodon
Quoting
Event Horizon Telescope @ehtelescope@mastodon.social

This feathered visitor recently stopped by the IRAM 30-m telescope to assist with EHT observations.

The bird had gotten lost in the fog and appeared at the control room door- more than 1,500 meters above its usual habitat.

After a brief "internship," it was safely released back into nature the next morning.

Open quoted post
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mpi_grav
MPI for Gravitational Physics @mpi_grav@academiccloud.social · Jan 29, 2026
Testing Einstein’s theory of relativity with the clearest gravitational-wave signal yet ℹ️ https://www.aei.mpg.de/1391414/testing-einstein-s-theory-of-relativity-with-the-clearest-gravitational-wave-signal-yet 📄 https://journals.aps.org/prl/abstract/10.1103/6c61-fm1n (Open Access) 1️⃣ Relativity put to the test: A LIGO-Virgo-KAGRA team has conducted some of the most precise tests of Einstein’s theory of general relativity. 2️⃣ Einstein holds fast: In all tests, the observations match the theory’s predictions. In some cases, the tests based on this signal alone are two to three times more stringent than those obtained by combining data from dozens of other signals. 3️⃣ The clearest signal: The team used data from GW250114, the strongest gravitational-wave signal ever detected from the merger of two black holes. 4️⃣ Like a bell: For the first time, detailed analyses of the complete signal and the ringdown phase, which occurs shortly after the merger, have identified or constrained three gravitational-wave tones. Image: H. Pfeiffer, A. Buonanno (@mpi_grav@academiccloud.social), K. Mitman (Cornell University) #Relativity #BlackHoles
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