Quantcast

Latest Astronomical radio source Stories

Four Black Hole Candidates Discovered
2012-07-21 08:01:00

redOrbit Staff & Wire Reports - Your Universe Online Researchers from a Japanese university have discovered intermediate-mass black hole (IMBH) candidates at the center of the Milky Way, the National Astronomical Observatory of Japan (NAO) announced on Friday. Tomoharu Oka, an Associate Professor at Keio University, and colleagues used radio telescopes to locate four black hole candidates approximately 30,000 light-years from the solar system, located in the direction of the...

29448a38caedc550793deb572983cff21
2010-04-14 08:35:00

Astronomers investigating why the cosmic background radiation is much brighter at radio wavelengths than expected have identified a potential culprit: fast spinning black holes early in the galaxy formation process. The results will be presented by Professor Andy Lawrence at the RAS National Astronomy Meeting in Glasgow on Wednesday April 14th. Last July, US astronomers announced surprising results from a high-altitude balloon experiment called ARCADE-2, which had made careful measurements of...


Latest Astronomical radio source Reference Libraries

45_894c6a813094d5c55029fadb762d4d57
2010-10-08 17:45:24

Radio telescopes, used in tracking and collecting data from satellites and space probes, are a form of directional radio antenna used in radio astronomy. They operate on the radio frequency portion of the electromagnetic spectrum where they detect radio sources. Radio telescopes are large parabolic antennas used singly or in an array and are located far from major centers of population in order to avoid electromagnetic interference. Karl Guthe Jansky built the first radio antenna used to...

6_3e166ea744352dc86330d77d6feb4abd2
2004-10-19 04:45:41

Active Galaxy -- An active galaxy is a galaxy where a significant fraction of the energy output is not emitted from normal stellar populations or interstellar gas. This energy, depending on the active galaxy type, can be emitted across most of the electromagnetic spectrum, as infrared, radio waves, UV, X-ray and gamma rays. Frequently, the abbreviation AGN (Active Galactic Nuclei) is used, since most of the active galaxies emit most of their radiation from a narrow region in their...

More Articles (2 articles) »
Word of the Day
attercop
  • A spider.
  • Figuratively, a peevish, testy, ill-natured person.
'Attercop' comes from the Old English 'atorcoppe,' where 'atter' means 'poison, venom' and‎ 'cop' means 'spider.' 'Coppa' is a derivative of 'cop,' top, summit, round head, or 'copp,' cup, vessel, which refers to 'the supposed venomous properties of spiders,' says the OED. 'Copp' is still found in the word 'cobweb.'
Related