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Articles tagged: X-rays

  • Black widow pulsars, constellations, Fermi Gamma-ray Space Telescope, The Hulk, U.S.S. Enterprise 24 October 2018 New constellations for Fermi's 10th birthday

    ... Maryland. “One way or another, all of the gamma-ray constellations have a tie-in to Fermi science.” Among the assortment...a further 2000 sources to the collection. These additional gamma-ray sources could one day end up as another set of ...

    • Black widow pulsars
    • constellations
    • Fermi Gamma-ray Space Telescope
    • The Hulk
    • U.S.S. Enterprise
  • B0355+54, Chandra X-ray Observatory, Geminga, pulsar wind nebulae (PWN), radio pulsar 18 January 2017 The unusual tails of a pulsar give a clue as to what type of pulse it generates

    ...emission signatures of these objects. By using NASA's Chandra X-ray Observatory, astronomers observed the pulsar wind nebulae (PWN) ...we detect the bright radio pulses while most of the gamma-ray emission is directed in the plane of the sky and misses ...

    • B0355+54
    • Chandra X-ray Observatory
    • Geminga
    • pulsar wind nebulae (PWN)
    • radio pulsar
  • cosmic rays, Dark Matter, High-Altitude Water Cherenkov Gamma-Ray Observatory (HAWC), high-energy positrons, pulsars 17 November 2017 Excess positrons immersing Earth have unknown origin

    ... such as potassium-40, however they are also found in cosmic rays, and astronomers have long been intrigued by why there are ...from. One of which is the High-Altitude Water Cherenkov Gamma-Ray Observatory (HAWC) detector in Mexico. As the name implies ...

    • cosmic rays
    • Dark Matter
    • High-Altitude Water Cherenkov Gamma-Ray Observatory (HAWC)
    • high-energy positrons
    • pulsars
  • climate change, cosmic rays, muons, supernovae explosions, troposphere 12 July 2016 Did two ancient supernovas cause cell mutation and climate change on Earth?

    ...by muons – an unstable subatomic particle of the same class as an electron – at ground level on Earth. This boosted exposure to cosmic rays would be equivalent to one CT scan per year for every creature inhabiting land or shallower parts of the ocean...

    • climate change
    • cosmic rays
    • muons
    • supernovae explosions
    • troposphere
  • cosmic rays, dementia, Mission to Mars, space brain 10 October 2016 Risk of chronic dementia for astronauts heading to Mars

    ... but now the risk of chronic dementia from galactic cosmic ray exposure could face astronomers on a long-haul trip to ...not face the same level of bombardment with galactic cosmic rays because they are still within the Earth's protective magnetosphere...

    • cosmic rays
    • dementia
    • Mission to Mars
    • space brain
  • ALMA, Gamma ray burst, gamma-ray burst afterglow, GRB 110715A 11 October 2016 GRB afterglow observed by ALMA for the first time

    .../Submillimetre Array (ALMA) to study the afterglow of a gamma-ray burst (GRB) – an event classed as one of the ... that GRB events are characterised by a short flash of gamma-ray photons followed by a long lasting afterglow that can be observed...

    • ALMA
    • Gamma ray burst
    • gamma-ray burst afterglow
    • GRB 110715A
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