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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 energĂ©tico (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
New Articles
First X-rays from Uranus! (April 16, 2021)
Data Sonification: Listen to the Sounds of the Universe! (Vol. 2) (April 5, 2021)
What are Gravitational Waves? (March 29, 2021)
PJ352-15: Gigantic Jet Spied From Black Hole in Early Universe! (March 21, 2021)
eROSITA X-Ray Telescope Spots Enormous Supernova Remnant! (March 11, 2021)
  • First X-rays from Uranus!
  • Data Sonification: Listen to the Sounds of the Universe! (Vol. 2)
  • What are Gravitational Waves?

First X-rays from Uranus!

Data Sonification: Listen to the Sounds of the Universe! (Vol. 2)

X-ray and radio bursts detected from magnetar 1E 1547.0–5408!

November 27, 2020November 27, 2020 Ektoras PouliasisArticle

An international team of astronomers has conducted simultaneous radio and X-ray observations of the magnetar 1E 1547.0–5408 during its period of enhanced activity. In result, new X-ray and radio bursts were detected from this source. The finding is reported in Read More …

Assessing The Habitability of Planets Around Old Red Dwarfs!

November 12, 2020November 12, 2020 Ektoras PouliasisArticle

A new study using data from NASA’s Chandra X-ray Observatory and Hubble Space Telescope gives new insight into an important question: how habitable are planets that orbit the most common type of stars in the Galaxy? The target of the Read More …

Extreme ‘Black Widow’ Star Identified as Source of Mystery Gamma Radiation!

November 3, 2020November 3, 2020 Ektoras PouliasisArticle

For more than two decades, astronomers have been systematically tracing mystery sources of high-energy gamma rays to their sources. One, however, remained stubborn – the brightest unidentified source of gamma rays in the Milky Way. It seemed to be coming from Read More …

Take a tour of the European Gravitational Observatory (EGO) and the advanced Virgo detector

October 20, 2020October 20, 2020 Ektoras PouliasisShort article

The covid-19 situation suspended all the visits on site, though the visits in EGO and Virgo will be LIVE BROADCASTED from the time beeing! Stay tuned! Galileo’s telescope opened the door to the stars, EGO and Virgo opened a new Read More …

Death by Spaghettification: Telescopes Record Last Moments of Star Devoured by a Black Hole!

October 16, 2020October 16, 2020 Ektoras PouliasisArticle

A rare blast of light, emitted by a star as it is sucked in by a supermassive black hole, has been spotted by scientists using telescopes from around the world. The phenomenon, known as a tidal disruption event, is the Read More …

The black hole always chirps twice: Scientists find clues to decipher the shape of black holes!

October 10, 2020October 10, 2020 Ektoras PouliasisArticle

A team of gravitational wave researchers led by the ARC Center of Excellence for Gravitational Wave Discovery (OzGrav) report that when two black holes collide and merge, the remnant black hole “chirps” not once, but multiple times, emitting gravitational waves—intense Read More …

Three scientists share Nobel prize in physics for work on black holes!

October 6, 2020 Ektoras PouliasisArticle

The Royal Swedish Academy of Sciences has decided to award the Nobel Prize in Physics 2020 with one half to Roger Penrose, University of Oxford, UK, “for the discovery that black hole formation is a robust prediction of the general Read More …

Astrophysicists Suggest New Way to Detect Stellar-Mass Black Holes!

September 29, 2020September 29, 2020 Ektoras PouliasisArticle

An analysis of archival X-ray data from NASA’s Rossi X-Ray Timing Explorer has revealed a clear separation between the characteristics of stellar-mass black holes and neutron stars, which is a consequence of the lack of the hard surface in the Read More …

#AthenaScience: High-redshift galaxy groups as seen by Athena/WFI, by Chaoli Zhan

September 24, 2020September 24, 2020 Ektoras PouliasisShort article

The first massive galaxy groups in the Universe are predicted to have formed when the Universe was less than 4 billions years old (redshift > 2). Baryonic physics, like stellar and active galactic nuclei (AGN) feedback in this very active Read More …

Strongest magnetic field in universe directly detected by X-ray space observatory!

September 20, 2020September 20, 2020 Ektoras PouliasisArticle

Scientists with the Hard X-ray Modulation Telescope (Insight-HXMT) team has performed extensive observations of the accreting X-ray pulsar GRO J1008-57 and has discovered a magnetic field of ~1 billion Tesla on the surface of the neutron star. This is the Read More …

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First X-rays from Uranus!

April 16, 2021April 16, 2021 Ektoras PouliasisArticle

Astronomers have detected X-rays from Uranus for the first time, using NASA’s Chandra X-ray Observatory. This result may help scientists learn more about this enigmatic ice giant planet in our Solar System. Uranus is the seventh planet from the Sun Read More …

Data Sonification: Listen to the Sounds of the Universe! (Vol. 2)

April 5, 2021April 5, 2021 Ektoras PouliasisArticle

A new project using sonification turns astronomical images from Chandra and other telescopes into sound. As the cursor moves across the images, sounds represent the position and brightness of the sources in which each telescope plays a different instrument. Previously, Read More …

What are Gravitational Waves?

March 29, 2021March 29, 2021 Ektoras PouliasisArticle

Gravitational waves are invisible (yet incredibly fast) ripples in the otherwise tough, stiff fabric of spacetime. Gravitational waves travel at the speed of light and squeeze and stretch anything in their path as they pass by. Gravitational waves are fundamentally Read More …

What is High-Energy Astrophysics and AHEAD2020?

March 25, 2021March 25, 2021 Ektoras PouliasisShort article

High-Energy Astrophysics studies astronomical objects that release electromagnetic radiation at highly energetic wavelengths that is X-rays and gamma-rays. These wavelengths come from matter with very high temperatures revealing a hot and energetic Universe! AHEAD2020 (Activities in the High Energy Astrophysics Read More …

PJ352-15: Gigantic Jet Spied From Black Hole in Early Universe!

March 21, 2021March 21, 2021 Ektoras PouliasisArticle

Astronomers may have found the most distant supermassive black hole with a jet detected in X-rays using NASA’s Chandra X-ray Observatory. The source of this jet is a quasar — a rapidly growing supermassive black hole — named PSO J352.4034-15.3373 Read More …

eROSITA X-Ray Telescope Spots Enormous Supernova Remnant!

March 11, 2021March 11, 2021 Ektoras PouliasisArticle

In the first all-sky survey by the eROSITA X-ray telescope onboard SRG, astronomers at the Max Planck Institute for Extraterrestrial Physics have detected the largest in terms of apparent size supernova remnant ever observed in X-rays. The supernova remnant (SNR) Read More …

Talk: “AGN Warm Absorbers: The Rosetta Stone of AGN phenomenology?” by Prof. D. Kazanas (NASA/GSFC)

March 9, 2021March 9, 2021 Ektoras PouliasisEvent

The Section of Astrophysics, Astronomy and Mechanics of the Department of Physics of the National and Kapodistrian University of Athens in Greece offers a series of virtual Colloquia in Astrophysics, every Wednesday at 6pm EET. The Spring Colloquium Sessions of Read More …

Talk: “ALMA: the soul of (sub)mm astronomy” by Dr. Evanthia Hatziminaoglou (ESO, Germany)

March 9, 2021March 9, 2021 Ektoras PouliasisEvent

The Hellenic Astronomical Society organizes its 6th Monthly Colloquium of HelAS – 9 March 2021with invited speaker Dr. Evanthia Hatziminaoglou from the European Southern Observatory (ESO) in Germany. This event will happen on Tuesday, 9 March 2021 at 18:00 Athens Read More …

E0102-72.3: A Distant and Lonely Neutron Star!

March 8, 2021March 8, 2021 Ektoras PouliasisImage

Neutron stars are the ultra dense cores of massive stars that collapse and undergo a supernova explosion. This neutron star is located within the remains of a supernova — known as 1E 0102.2-7219 (E0102 for short) — in the Small Read More …

Super-bubbles found in the galaxy NGC 3079!

March 2, 2021March 3, 2021 Ektoras PouliasisImage

The galaxy NGC 3079, located about 67 million light years from Earth, contains two “super-bubbles”. A pair of balloon-like regions stretch out on opposite sides of the center of the galaxy: one is 4,900 light years across and the other Read More …

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What is High Energy Astrophysics?

Upcoming Events

  1. MMWS2021 — XMM-Newton (Virtual) Workshop 2021: A high-energy view of exoplanets and their environments

    May 24 - May 28
  2. MMAP 2021 — Multi sidereis NUNCIIS Multi-messenger astronomy

    May 31 - June 4
  3. IAUS 363: Neutron Star Astrophysics at the Crossroads: Magnetars and the Multimessenger Revolution

    June 13 - June 18
  4. Galaxy Cluster Formation II (GCF2021): Mergers, Protoclusters, and Star Formation in Overdense Environments

    June 14 - June 18
  5. European Astronomical Society Annual Meeting Virtual Conference

    June 28 - July 2

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Are you ready to explore the X-ray Universe?

Welcome to CLAXSON!

(Classification of X-ray Sources for Novices)

Now available in EN, FR, ES and GR!

CLAXSON is a platform that trains you to identify new objects observed in the X-ray sky with the European Space Agency X-ray telescope XMM-Newton. Be the first to find new supermassive black holes, stars, galaxies and other exotic objects in observations taken over the last 20 years, and help astronomers unravel the mysteries of the X-ray sky.

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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:
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igeorgantopoulos@gmail.com

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