(Phys.org)—Stars, quasars, and other celestial objects generate photons in a random way, and now scientists have taken advantage of this randomness to generate random numbers at rates of more than one million numbers per second. Generating random numbers at very high rates has a variety of applications, such as in cryptography and computer simulations.
Quasars are luminous objects with supermassive black holes at their centers, visible over vast cosmic distances. Infalling matter increases the black hole mass and is also responsible for a quasar's brightness. Now, using the W.M. Keck...Show More Summary
Astronomers use the light of double quasars to measure the structure of the universe
Astronomers use the light of twin quasars to measure the structure of the universe
(University of California - Santa Barbara) A team of astronomers has made the first measurements of small-scale ripples in primeval hydrogen gas using rare double quasars.
The most barren regions known are the far-flung corners of intergalactic space. In these vast expanses between the galaxies there is just one solitary atom per cubic meter—a diffuse haze of hydrogen gas left over from the Big Bang. On...Show More Summary
(Phys.org)—A team of astronomers led by Yoshiki Matsuoka of the National Astronomical Observatory of Japan (NAOJ) has detected a treasure trove of new high-redshift quasars (or quasi-stellar objects) and luminous galaxies. The newly found objects could be very important for our understanding of the early universe. Show More Summary
We don’t understand quasars all that well, but are pretty certain that these incredibly bright lights belong in the centers of galaxies. So it looked a little weird when astronomers spotted quasar 3C 186 thirty six thousand light years away from the center of its galaxy, seemingly trying to escape. Read more...
For decades, astronomers have found distant galaxies by detecting the characteristic way their gas absorbs light from a bright quasar in the background. But efforts to observe the light emitted by these same galaxies have mostly been unsuccessful. Show More Summary
(Phys.org)—Using a new color selection technique, astronomers have detected 16 new luminous, high-redshift quasars. The discovery could be very important for understanding of the early universe, as such high-redshift, quasi-stellar objects...Show More Summary
Late last year, an international team including researchers from the Kavli Institute for Astronomy and Astrophysics (KIAA) at Peking University announced the discovery of more than 60 extremely distant quasars, nearly doubling the number known to science - and thus providing dozens of new opportunities to look deep into our universe's history.
Quasars, stupendously bright regions in the cores of galaxies, powered by gargantuan black holes, will deepen our understanding of why nearly all galaxies have supermassive black holes at their cores, begging the chicken-or-the-egg question of which came first, the galaxies...
(The Kavli Foundation) Three astrophysicists, including a member of the team that recently announced a huge find of extremely distant quasars, explain how these "lighthouses" of the universe will shed some much-needed light on a formative period of cosmic history.
Using gravitational lensing, astronomers have imaged distant quasars with the Hubble Space Telescope. They used the imagery to determine that the Universe is expanding quicker that previously thought.
New observations of lensed quasars show the Universe is expanding faster than expected. But these results raise questions about the assumptions of our cosmological models.
(Ecole Polytechnique Fédérale de Lausanne) The H0LiCOW collaboration, a cosmology project led by EPFL and Max Planck Institute and regrouping several research organizations in the world has made a new measurement of the Hubble constant, which indicates how fast the universe is expanding. Show More Summary
(Phys.org)—Astronomers have spotted a mysterious faint object in the vicinity of a quadruply lensed quasar designated MG 0414+0534. The object, which was discovered using the Atacama Large Millimeter/submillimeter Array (ALMA), appears to be a dusty, dark dwarf galaxy or an ultra-diffuse galaxy (UDG). The findings were presented January 19 in a paper published on arXiv.org.
Steve reaches out to a hero that can help — the all-new Quasar! Marvel Comics' Captain America: Steve Rogers #9 by Nick Spencer & Javier Pina. The post Captain America: Steve Rogers #9 appeared first on CBR.com.
Even over billions and billions of years, the laws of physics were exactly the same.
A long time ago, when Costco used to sell comic books in sealed packages ranging from X-Men to Thor to Batman and even Quasar. Who the hell is Quasar? Exactly. Also included in some of those packages were some smaller press comics from a company by the name of Image. Their titles included Youngblood, Brigade, […]