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AHEAD2020

  • Home
  • About AHEAD2020
  • Open days
    • National Observatory of Athens (Penteli)
    • National Observatory of Athens (Thissio)
  • Events
  • Videos
    • AHEAD
      • Virtual Reality videos
        • The Hot and Energetic Universe – Virtual Reality (VR) edition
        • The X ray Universe – Virtual Reality (VR) edition
      • Hot and Energetic Universe – El Universo caliente y energético (Spanish Narration)
      • The Hot and Energetic Universe (flat version, HDTV)
      • The Hot and Energetic Universe (short version)
      • Short version of “The Hot and Energetic Universe” (Greek narration and subs)
      • The Hot and Energetic Universe (version for DOME theatres)
      • Black Holes
      • Gamma Ray Bursts
      • Gamma ray astronomy
      • 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
    • Guide for visitors (Dome Video)
    • 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)
      • Presentations
    • 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)
  • Links
    • AHEAD main site (INAF)
    • Public Outreach
      • The Athena X-ray Observatory
      • European Gravitational Observatory (EGO)
      • 3XMM
      • ESA
      • ESO/ePOD
      • ESO-Press Release
      • HEASARC
      • WebStars
      • Ask an astrophycist
      • Cosmic Distances
      • AstronomyNow
    • Missions
      • INTEGRAL
      • XMM-NEWTON
      • 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 Rome Press Release
      • NOA Press Release
    • Press release for ATHENA
      • NOA press release
      • INAF Rome press release
    • Press release from the AHEAD Multi-messenger workshop in Alicante
  • Social media

Category: Article

Pair of supermassive black holes creates enormous bubbles!

December 17, 2021December 17, 2021 Dr. Ektoras PouliasisArticle

Four enormous cavities, or bubbles, have been found at the center of a galaxy cluster using NASA’s Chandra X-ray Observatory. The left panel of the following graphic shows an optical image of the galaxy cluster called RBS 797, from NASA’s Read More …

IXPE: NASA Launches New Mission to Explore Universe’s Most Dramatic Objects!

December 16, 2021December 16, 2021 Dr. Ektoras PouliasisArticle

A joint effort with the Italian Space Agency, the IXPE observatory is NASA’s first mission dedicated to measuring the polarization of X-rays from the most extreme and mysterious objects in the universe – supernova remnants, supermassive black holes, and dozens Read More …

Multi-wavelength snapshot of a repeating fast radio burst!

December 14, 2021December 14, 2021 Dr. Ektoras PouliasisArticle

With a multiwavelength campaign, a group of astronomers led by the Italian National Institute of Astrophysics (INAF) studied a repeating fast radio burst (FRB). The object FRB20201124A, discovered in November 2020, reactivated in March 2021, emitting a series of radio Read More …

Searching for Active Galactic Nuclei when the Universe was less than 2 billions years old!

December 6, 2021December 6, 2021 Dr. Ektoras PouliasisArticle

Massive galaxies and a fraction of lower mass galaxies in the Local Universe host a super massive black hole in their centre. Their mass ranges between millions and tens billions solar masses. When matter from the galaxies falls into the Read More …

The X-CLASS survey: A sample of 1646 galaxy clusters detected in X-rays 5 billions years after Big Bang to present!

November 30, 2021November 30, 2021 Dr. Ektoras PouliasisArticle

Matter in the Universe is not evenly distributed but forms a cosmic web of filaments shaped by gravity, with galaxy clusters found at their intersections. Galaxy clusters are the largest bound entities in the Universe – they trace the highest Read More …

#WhatIsAHEAD2020 X-ray Pulsars

November 24, 2021November 24, 2021 Dr. Ektoras PouliasisArticle

The X-ray pulsars were discovered in the 70s and are among the most luminous objects in the X-ray sky. They are binary systems that consist of a magnetized neutron star in orbit with a normal stellar companion. The magnetic field Read More …

When a Stable Star Explodes

November 22, 2021November 22, 2021 Dr. Ektoras PouliasisArticle

White dwarfs are among the most stable of stars. Left on their own, these stars that have exhausted most of their nuclear fuel — while still typically as massive as the Sun — and shrunk to a relatively small size Read More …

Measuring the properties of active galactic nuclei in the Local Universe!

November 5, 2021November 5, 2021 Dr. Ektoras PouliasisArticle

The massive galaxies and a fraction of lower mass galaxies in the Local Universe host a super massive black hole (SMBH) in their centre. They have masses between millions to 10 billions times the mass of the Sun. When matter Read More …

XMM-Newton completed its 4000th orbit around the Earth with a billion kilometers travelled so far!

October 18, 2021October 18, 2021 Dr. Ektoras PouliasisArticle

The X-ray XMM-Newton space telescope in October 12th, 2021 completed its 4000th orbit around the Earth with a billion kilometers travelled so far! XMM-Newton is an European Space Agency X-ray satellite launched in December 10th of 1999. The mission was Read More …

MSH 15-52: Cosmic Hand Hitting a Wall

July 15, 2021July 15, 2021 Dr. Ektoras PouliasisArticle

Astronomers have measured motions within a remarkable cosmic structure for the first time using NASA’s Chandra X-ray Observatory. The data show a blast wave and debris from an exploded star moving away from the explosion site and colliding with a Read More …

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