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1ES 1101-232 is an active galactic nucleus of a distant galaxy known as a blazar. [1] It is also a BL Lac object. [2]An X-ray source (catalogued as A 1059-22) was first recorded by Maccagni and colleagues in a 1978 paper; they thought the source arose from a galaxy in the Abell 1146 galaxy cluster, which contained many giant elliptical galaxies. [3]
B2 1308+326 known as OP 313 or AU CVn, is a BL Lacertae object [1] located in the constellation of Canes Venatici. It has a redshift of (z) 0.997 [2] and was initially discovered as a variable star in 1959 before being identified with its optical counterpart in 1972. [3] Its radio spectrum is flat, making it a FRSQ (flat-spectrum radio quasar ...
3C 454.3 is a blazar (a type of quasar with a jet oriented toward Earth) located away from the galactic plane.It is one of the brightest gamma ray sources in the sky, [2] and is one of the most luminous astronomical object ever observed, with a maximum absolute magnitude of -31.4. [3]
In July 2018, the IceCube Neutrino Observatory team traced a neutrino that hit its Antarctica-based detector in September 2017 to its point of origin in a blazar 3.7 billion light-years away. This was the first time that a neutrino detector was used to locate an object in space. [4] [5] [6]
It is known to show intense gamma ray activity observed by Fermi Large Area Telescope on October 3, 2011. [7] In additional to gamma ray activity, 4C +28.07 also shows near-infrared flares. [ 8 ] [ 9 ] [ 10 ] Between 16 January 2013 and 13 March 2020, four strong gamma ray flares were observed by Fermi LAT, during the Interferometric Monitoring ...
Below, you’ll find an assortment of images with hidden objects. Think of them as hidden picture games for all moods and seasons. Up the challenge by giving yourself only 45 seconds to spot each ...
Markarian 501 (or Mrk 501) is a galaxy with a spectrum extending to the highest energy gamma rays. [4] It is a blazar or BL Lac object, which is an active galactic nucleus with a jet that is shooting towards the Earth.
3C 345 has been known to fluctuate in brightness. For example, it brightened from magnitude 17.2 to 16.0 between 10 April 2018 and 8 May 2018 when observed in R band. [7] A bright GeV gamma-ray flare was observed by the Fermi Gamma-ray Space Telescope on 31 May 2017, as the flux increased by 40 times above average. [8]