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25,000 supermassive black holes visible in map of northern sky


LOFAR/LOL Survey
Astronomers in Europe compiled the most detailed map of black holes to date.
Their map of the northern sky shows 25,000 white dots, each representing a supermassive black hole. 
The image above may look like a fairly normal picture of the night sky, but what you re looking at is a lot more special than just glittering stars. Each of those 25,000 white dots is an active supermassive black hole.
And each of those black holes is devouring material at the heart of a galaxy millions of light-years away that s how they could be pinpointed at all. 
In a new study, astronomers created the most detailed map to date of black holes at low radio frequencies, an achievement that took years and a Europe-sized radio telescope to compile. ....

Sky Survey Lo , University Of Hamburg , Low Frequency Array , Netherland Leiden Observatory , Black Holes , Science Contributor , Science Alert , Michelle Starr , வானம் கணக்கெடுப்பு லோ , பல்கலைக்கழகம் ஆஃப் ஹாம்பர்க் , குறைந்த அதிர்வெண் வரிசை , கருப்பு துளைகள் , அறிவியல் எச்சரிக்கை , மைக்கேல் நட்சத்திரம் ,

The White Dots in This Image Are Not Stars or Galaxies. They're Black Holes


The image above may look like a fairly normal picture of the night sky, but what you re looking at is a lot more special than just glittering stars. Each of those white dots is an active supermassive black hole. ....

Sky Survey Lo , University Of Hamburg , Francesco De Gasperin , Leiden Observatory , Amp Quot , வானம் கணக்கெடுப்பு லோ , பல்கலைக்கழகம் ஆஃப் ஹாம்பர்க் ,