We recently reported on an enormous galaxy that at its core contains an equivalent to 140 trillion times all the water in the world's ocean, surrounding a huge, feeding black hole, called a quasar, more than 12 billion light-years away....
Gas filaments surrounding stars like the strands of a pompom may be the answer to a 30-year old mystery: why quasars twinkle.
Guardians of the Galaxy series director James Gunn posted a tweet yesterday that is leading fans to speculate that the character Quasar might appear in the third installment of Marvel’s cosmic franchise. Was the tweet a sly tease, an unintentional slip-up, or just an observation completely unrelated to Guardians of the Galaxy Vol. Show More Summary
Director James Gunn sent out a seemingly random tweet today, which many people believe is a hint that Quasar will show up in Guardians Vol. 3.
James Gunn may have just teased the live-action debut of Marvel cosmic hero Quasar, under the veil of random VHS nostalgia. The post James Gunn May Have Just Teased Quasar for GOTG3 appeared first on CBR.
The neighbourhoods of extremely bright astronomical objects called quasars in the early Universe have been incompletely probed. Observations suggest that these regions harbour some of the most massive known galaxies. See Letter p.45...
The existence of massive (1011 solar masses) elliptical galaxies by redshift z???4 (refs 1, 2, 3; when the Universe was 1.5 billion years old) necessitates the presence of galaxies with star-formation rates exceeding 100 solar masses per year at z?>?6 (corresponding to an age of the Universe of less than 1 billion years). Show More Summary
(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.