Latest Quasar Stories
Novel Firm Seeks to Change Startup Model by Matching Strong Business Concepts with Qualified Entrepreneurs; Goal is Ten New Tech Companies Within Next Four Years BUENOS AIRES, Argentina, March 28, 2013 /PRNewswire/ -- Quasar Ventures(TM), a new technology company builder led by former Officenet executives Andy Freire, Santiago Bilinkis and Pablo Simon Casarino, announced today that it has begun operations with $5.4 million (USD) in outside investment from a group of strategic...
redOrbit Staff & Wire Reports - Your Universe Online Astronomers from the University of Colorado Boulder (CU-Boulder) believe that so-called sideline quasars located on the outer fringes of a larger, brighter active galactic nucleus might have joined forces with it to prevent the formation of small galaxies billions of years ago. Michael Shull, a professor of astrophysical and planetary sciences at the university’s Center for Astrophysics and Space Astronomy, and research...
Royal Astronomical Society For only the second time in history, a team of scientists including Michele Fumagalli from the Carnegie Institution for Science in the United States have discovered an extremely rare triple quasar system. Their work is published in the Oxford University Press journal Monthly Notices of the Royal Astronomical Society. Quasars are extremely bright and powerful sources of energy that sit in the center of a galaxy, surrounding a black hole. In systems with...
Lee Rannals for redOrbit.com - Your Universe Online Astronomers using the Subaru Telescope recently obtained a three-dimensional view of a distant gravitationally-lensed quasar and discovered complex structures inside outflows coming from the nucleus. The team used the large telescope to observe quasar SDSS J1029+2623, which sits 10 billion light-years away from Earth in the constellation Leo. By using the gravitational lensing technique, astronomers were able to look at this far away...
Lee Rannals for redOrbit.com – Your Universe Online Astronomers using the CSIRO radio telescope have discovered that the Universe's temperature has cooled down, which falls right in line with the Big Bang theory. An international team of astronomers from Sweden, France, Germany and Australia used the CSIRO Australia Telescope Compact Array near Narrabi to measure how warm the Universe was when it was half its current age. "This is the most precise measurement ever made of how the...
redOrbit Staff & Wire Reports – Your Universe Online Thanks to observations obtained using the Hubble Space Telescope, researchers have discovered direct, empirical evidence of the existence of gas flows that are consumed by galaxies as fuel. A team led by Nicolas Lehner, research associate professor at the University of Notre Dame, studied data collected by the telescope’s two ultraviolet spectrographs, the Cosmic Origins Spectrograph and the Space Telescope Imaging...
redOrbit Staff & Wire Reports - Your Universe Online Astronomers have reportedly discovered the largest known structure in the universe – a formation so massive it would take a vehicle that was moving at light speed roughly four billion light years to cross it, the Royal Astronomical Society (RAS) announced on Thursday. The structure is a large quasar group (LQG), or a formation that contains the nuclei of galaxies from the earliest days of the universe’s existence. These quasar...
[ Video 1 ] | Video 2 ] Lee Rannals for redOrbit.com - Your Universe Online Astronomers using CSIRO's 210-feet Parkes radio telescope in eastern Australia have found monstrous outflows of charged particles coming from the center of our galaxy. The researchers said that the outflows contain an extraordinary amount of energy, reaching about a million times the energy of an exploding star. Although the outflows are shooting out at over 600 miles per second, they pose no danger to...
April Flowers for redOrbit.com - Your Universe Online It would be a mistake to think of black holes as having a uniformity of size or mass. They range from modest objects formed from the end of an individual stars' life to behemoths billions of times more massive that rule the centers of galaxies. A new study recently published in the journal Science, however, shows that high-speed jets launched from active black holes share fundamental similarities despite the mass, age or...
Lee Rannals for redOrbit.com - Your Universe Online Astronomers have found a microquasar in a galaxy far away for the first time, according to a report in the journal Nature. The discovery of the microquasar gives hope that more objects may be found in nearby galaxies, which could give astronomers the opportunity to study them in detail, unraveling some of their mysteries. In a microquasar, a black hole with a mass several times that of the Sun pulls material from its companion star...
Latest Quasar Reference Libraries
Large-Scale Structure of the Cosmos -- Stars are organised into galaxies which in turn appear to form clusters and superclusters, separated by voids. Prior to 1989 it was commonly assumed that the superclusters were the largest structures in existence, and that they were distributed more-or-less uniformly throughout the universe in every direction. However, in 1989, Margaret Geller and John Huchra discovered the "Great Wall", a sheet of galaxies more than 500 million light years long...
Supermassive Black Hole -- A Supermassive black hole is a black hole with a mass in the range of millions or billions solar masses. A supermassive black hole has some interesting properties differing from his low-mass cousins: -- The average density of a supermassive black hole can be very low, and actually can be lower than water's density. This happens because the black hole diameter increases linearly with mass, and consequently density drops much faster. -- Strong tidal...
Redshift -- Redshift is the phenomenon that the frequency of light when observed, under certain circumstances, can be lower than the frequency of light when it was emitted at the source. This usually occurs when the source moves away from the observer, as in the Doppler effect. More specifically, the term redshift is used for the observation that the spectrum of light emitted by distant galaxies is shifted to lower frequencies (towards the red end of the spectrum, hence the name) when...
Microquasar -- Microquasars are smaller cousins of quasars. They are named after quasars, as they have some common characteristics: strong and variable radio emission often seen as radio jets, and an accretion disk surrounding a black hole. In quasars, the black hole is supermassive (millions of solar masses) as in microquasars, the black hole mass is a few solar masses. In microquasars, the accreted mass comes from a normal star and the accretion disk is very luminous in optical regions...
Gravitational Lens -- A gravitational lens is formed when the light from a very distant, bright object (such as a quasar) is "bent" around a massive object (such as a massive galaxy) between the bright object and the viewer. The process is known as gravitational lensing, and was one of the predictions made by Einstein's general relativity. Description In a gravitational lens, the gravity from the massive object bends light as a lens might. As a result, the path of the light from a...
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