Astronomers used data from three X-ray satellites and found a black hole that spins at about 50% the speed of light!
Astronomers used X-ray data from NASA’s Chandra X-ray observatory and ESA’s XMM-Newton satellite as well as ultraviolet data from Sloan Digital Sky survey (SDSS) and found evidence that dark energy is getting stronger with time!!
Scientists used the Fermi telescope to measure the entire amount of starlight ever emitted! According to the measurement, the number of photons (particles of visible light) that escaped into space after being emitted by stars translates to 4×1084!! This is 4 followed by 84 zeros!!!
The X-ray group of IAASARS at NOA, organises a conference in Corfu, Greece, in 19-22 June 2019. The title of the conference is: “Supermassive Black Holes: Environment and Evolution”
Astronomers detected a Gamma Ray Burst (GRB) candidate that its gamma rays were not detected by our telescopes!!
Credit: ESO Astronomers detected flares of infrared radiation coming from Sagittarius A*, the massive object at the heart of our Galaxy, This observation confirms that Sagittarius A* is indeed a supermassive black hole (SMBH)!! The flares were detected using the Read More …
Here are various links with Facebook plus interview from the INAF Rome press release about the ATHENA meeting: https://www.youtube.com/watch?v=bBYl-DDd1RQhttp://www.inaf.it/it/notizie-inaf/esplorando-l2019universo-caldo-ed-energeticohttp://www.astropa.inaf.it/en/losservatorio-astronomico-di-palermo-ospita-la-conferenza-exploring-the-hot-and-energetic-universe-dedicato-allathena-x-ray-observatory/https://www.facebook.com/AthenaConferencePalermo/videos/167992044083219/https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&cad=rja&uact=8&ved=2ahUKEwiZ2OHh8o_eAhVBqCwKHfvrAaEQFjACegQICBAB&url=https%3A%2F%2Fwww.facebook.com%2FAthenaConferencePalermo%2F&usg=AOvVaw2AYuvb7NwJKCyDo6YY1_yu
Many studies try to shed light on the origin of AGN obscuration. In a recent work, astronomers observed Cygnus-A, a radio galaxy about 750 million light-years from us that hosts a supermassive black hole (SMBH) which generates massive jets. These jets extent to about 150,000 light years. Their analysis reveals the presence of a strong magnetic field that regulates the feeding of the SMBH.
Το παρατηρητήριο ακτίνων-Χ, ATHENA της Ευρωπαϊκής Υπηρεσίας Διαστήματος και η ελληνική συμμετοχή Το διαστημικό τηλεσκόπιο ακτίνων-Χ, ATHENA, μια συνεργασία της ευρωπαϊκής υπηρεσίας διαστήματος, ESA, της NASA και της Iαπωνικής Jaxa θα παρατηρήσει την ακτινοβολία που εκλύει το Σύμπαν στις Read More …
Astronomers from the National Observatory of Athens and the Niels Bohr Institute, used the largest X-ray sample up to date to investigate how active supermassive black holes (SMBH) at the centre of galaxies affect their star formation. They found that, in a similar manner as an oscillator tries to keep the system around the equilibrium point, the SMBH (oscillator) tries to keep the galaxy in the main sequence (equilibrium point)!!