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blazars

The Heavens are Ablaze With Blazars

April 12, 2012

Want to stay on top of all the space news? Follow @universetoday on Twitter From a JPL press release: Astronomers are actively hunting a class of supermassive black holes throughout the universe called blazars thanks to data collected by NASA’s Wide-field Infrared Survey Explorer (WISE). The mission has revealed more than 200 blazars and has [...]

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Fermi Gamma Ray Observatory Harvests Cosmic Mysteries

September 13, 2011

When it comes to high-energy sources, no one knows them better than NASA’s Fermi Gamma-ray Space Telescope. Taking a portrait of the entire sky every 240 minutes, the program is continually renewing and updating its sources and once a year the scientists harvest the data. These annual gatherings are then re-worked with new tools to [...]

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Magnetic Fields in Inter-cluster Space: Measured at Last

April 14, 2010

The strength of the magnetic fields here on Earth, on the Sun, in inter-planetary space, on stars in our galaxy (the Milky Way; some of them anyway), in the interstellar medium (ISM) in our galaxy, and in the ISM of other spiral galaxies (some of them anyway) have been measured. But there have been no [...]

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World-wide Campaign Sheds New Light on Nature’s “LHC”

March 11, 2010

In a manner somewhat like the formation of an alliance to defeat Darth Vader’s Death Star, more than a decade ago astronomers formed the Whole Earth Blazar Telescope consortium to understand Nature’s Death Ray Gun (a.k.a. blazars). And contrary to its at-death’s-door sounding name, the GASP has proved crucial to unraveling the secrets of how [...]

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Fermi Spies Energetic Blazar Flare

December 11, 2009

The blazar 3C 454.3, a bright source of gamma rays from a galaxy 7 billion light-years away just got a whole lot brighter. Observations from the Fermi gamma-ray telescope confirm that since September 15th the blazar has flared up considerably, increasing in gamma-ray brightness by about ten times in the from earlier this past summer, [...]

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