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Activities in High Energy Astrophysics

  • Home
  • About AHEAD
  • Open days
    • National Observatory of Athens (Penteli)
    • National Observatory of Athens (Thissio)
  • Events
    • Conferences
  • Videos
    • AHEAD
      • The Hot and Energetic Universe (flat version, HDTV)
      • The Hot and Energetic Universe (short version)
      • The Hot and Energetic Universe (version for DOME theatres)
      • Black Holes
      • Gamma Ray Bursts
      • Why Observe from Space
      • AHEAD advertising video
      • AHEAD video for National Observatory of Athens
    • NOA
      • NOA
    • Documentaries
    • Public Lectures
    • HEASARC
      • ESO
    • ESA
  • Images
    • HEASARC
    • ESO
    • APOD
    • HEAPOW
  • Educational
    • Booklet for Dome Video (ESO website)
    • Booklet for Dome Video (extended version)
    • Booklet for Dome Video (short version)
    • Posters
      • About AHEAD
      • The Hot and Energetic Universe
      • The Hot and Energetic Universe (full version, ~300MB)
      • Black Holes and Supernovae
      • Black Holes and Supernovae (full version, ~300MB)
      • AGN
      • AGN (full version, ~2MB)
      • Gravity
      • Gravity (full version, ~2MB)
      • X-ray Observations/Surveys
      • X-ray Observations/Surveys (full version, 2MB)
    • Below age of 14
      • Star child (NASA)
      • ESA kids (ESA)
    • Above age of 14
      • Imagine
      • XMM learning centre
      • SWIFT learning centre
      • RXTE learning centre
      • Fermi education centre
      • A brief History of High Energy Astronomy (NASA)
      • ESA education (ESA)
    • Advanced
      • Astronomy exercises (ESA/ESO)
      • Hubble Public Lectures (NASA)
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      • ESO/ePOD
      • ESO-Press Release
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      • AstroSat
      • Swift
      • Chandra
      • AGILE
      • ATHENA
  • Press
    • The Hot and Energetic Universe: A planetarium movie
    • Scientists invited to take advantage of leading high energy research centres
    • INAF Press Release: X-ray bombardment
    • AHEAD’s planetarium movie wins the international fulldome film competition
      • INAF Press Release
      • NOA Press Release
      • LU Press Release
    • Scientists assemble to discuss the power of X-ray spectroscopy
    • Researchers’ Night 2017
      • INAF Press Release
      • Greek Press Release
  • Social media

Day: April 15, 2018

Thousands of black holes exist in the centre of galaxies

April 15, 2018April 15, 2018 Dr. George Mountrichas

The last twenty years astronomers are searching for evidence to support a theory that claims that thousands of black holes surround supermassive black holes (SMBHs) at the centre of galaxies. Now a team of researchers at the Columbia University found this long awaited evidence!!

Recent Posts

  • Thousands of black holes exist in the centre of galaxies
  • The most distant quasar has now been observed in X-rays!
  • Stellar winds that refuse to dim
  • Neutron star merger surprises astrophysicists
  • Trying to unveil the nature of the mysterious dark matter

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  • National Observatory of Athens hosted a pre-event to Researchers’ Night 2017
    September 25, 2017
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Invitation to submit news

Astronomers are invited to advertise their work and/or recent results in our website. Publications/news related to High Energy Astrophysics are of particular interest.

A brief text along with a related image should be sent to the following email addresses:
gmountrichas@gmail.com
igeorgantopoulos@gmail.com