gammarays

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  • Gamma ray telescope spots ancient, intense black holes

    by 
    Jon Fingas
    Jon Fingas
    01.30.2017

    NASA's Fermi gamma ray telescope has been working overtime, it seems. Scientists using the instrument have spotted extreme astronomical phenomenon both at the far edge of the universe and close to home. They've detected the farthest known blazars, or galaxies whose central black holes are so massive (over 1 million times the Sun's mass) that they emit extremely intense light in every spectrum, including gamma rays. The oldest example existed just 1.4 billion years after the Big Bang -- ancient compared to the previous record-setter, which was visible "just" 2.1 billion years after the birth of the universe.

  • Gamma ray map offers best view yet of our galaxy's energy

    by 
    Jon Fingas
    Jon Fingas
    01.11.2016

    Space is full of gamma rays and other intense forms of energy, but you've only ever had a partial picture of it. Ground-based telescopes can only see so much, and even the Fermi space telescope (designed to catch these energies) has missed out on a lot of it... until now, that is. NASA has posted a much more complete gamma ray map using 6 years' worth of refined Fermi data. The result is a far more detailed and comprehensive view of the energy 'bright spots' (between 50 billion to 2 trillion electron volts) in the Milky Way galaxy and beyond. The pretty picture you see above includes the leftovers of supernovae, pulsar wind nebulae and even galaxies whose supermassive black holes make them detectable from millions of light years away.

  • Large Hadron Collider may have detected a new particle

    by 
    Jon Fingas
    Jon Fingas
    12.16.2015

    The rejuvenated Large Hadron Collider might have achieved another breakthrough... provided everything lines up, that is. Two teams of CERN scientists have detected an excess of gamma ray pairs that they suspect might represent the radioactive decay of a previously unknown particle. The data is far from conclusive (there's a 1 in 93 chance that it's nothing), and the researchers don't expect to have enough data until they present at a convention next summer. However, it's rare that two groups notice the same anomaly -- that's frequently a sign that something's up.

  • Scientists want you to find cosmic rays using your phone's camera

    by 
    Jon Fingas
    Jon Fingas
    10.13.2014

    Cosmic ray particles hit Earth's atmosphere all the time, but finding them is tough; even the most sophisticated detectors can only cover so much ground. Scientists at University of California might just have discovered an easy way to pinpoint these exotic elements, however: the camera on your smartphone. The team's upcoming CRAYFIS (Cosmic Rays Found in Smartphones) app looks for high energy particles hitting the camera sensor on your device as soon it's both asleep and charging. While one phone wouldn't collect much data by itself, a gaggle of them would be extremely powerful; 1,000 phones in a square kilometer (0.4 square miles) would capture virtually every particle zooming overhead. They could actually be more effective than existing detection arrays, which tend to oversaturate quickly.

  • Sharp Pantone 5 ICS phone has 8 color choices, 3.7-inch screen -- oh, and a radiation detector

    by 
    Steve Dent
    Steve Dent
    05.29.2012

    Color us shocked and jealous at the new Android 4.0 phone from Sharp -- strange and wonderful even by Japan's highly elevated standards. The eight colors of the 3.7-inch Pantone branded phone from carrier Softbank are nice for sure, but the ability to sense between .005 and 9.99 μSv/h of radiation is in a new category altogether. Though Sharp has hedged a bit by describing the detector as "non-compliant" with Japan standards at this point, the possibilities seem endless for such a feature -- the ability to constantly report your location and radiation level to Facebook comes to mind, for instance. It will be offered -- in Japan only, we presume -- with a 4-megapixel rear camera, eight Pantone colors, 0.3-megapixel front camera, 854 x 480 resolution, and will be dust-proof and waterproof. The price hasn't been discussed yet, but we can't imagine too much quibbling whatever it is, for a phone that could keep you gamma-ray safe. Update: We have an image after the break showing how Sharp reduced the radiation circuits into a tiny package needed for the Pantone 5. The phone even has a dedicated button for the feature.

  • Scientists bend gamma rays, could neuter radioactive waste (update: more credit)

    by 
    Jon Fingas
    Jon Fingas
    05.10.2012

    Bending most light is easy; bending it in gamma ray form, however, has often been deemed impossible given how hard it is for electrons to react to the extreme frequencies. LMU Munich scientist Dietrich Habs and his Institut Laue-Langevin teammate Michael Jentschel have proven that assumption wrong: an experiment in blasting a silicon prism has shown that gamma rays will refract just slightly through the right material. If a lens is made out of a large-atom substance like gold to bend the rays further, the researchers envision focused beams of energy that could either detect radioactive material or even make it inert by wiping off neutrons and protons. In theory, it could turn a nuclear power plant's waste harmless. A practical use of the technology is still some distance off -- but that it's even within sight at all just feels like a breakthrough. Update: The research also involved the Max Planck Institute of Quantum Optics' Marc Günther. Thank you, Dr. Günther.