galaxies : activegalaxies : elliptical and lenticular, cDgalaxies : nucleigalaxies : Seyfertradiation mechanisms : nonthermalradio continuum : galaxiesMany nearby early-type (elliptical and S0) galaxies contain weak (millijansky level) nuclear radio sources on scales of a few hundred parsecs or less....
galaxies: activeinfrared: galaxiesLyman alpha blobs (LABs) are spatially extended lyman alpha nebulae seen at high redshift. The origin of Lyman alpha emission in the LABs is still unclear and under debate. To study their heating mechanism(s), we present Australia Telescope Compact Array (ATCA)...
as we have seen, there is more to quasars and other active galaxies than the point-like energy source. They can also have long jets that glow with radio waves, light, and sometimes even X-rays, and that extend far beyond the limits of the parent galaxy. Can we find a...
Astronomers have peered into the heart of a nearby starburst galaxy to better understand what powers its intense bouts of star formation. "All stars form in dense clouds of dust and gas," Adam Leroy, formerly of the National Radio Astronomy Observatory in Virginia and now with Ohio State ...
However, he seriously doubted that there were humanoid life forms in other galaxies. Hawking said that it would be highly unlikely that life-supporting planets elsewhere would mirror lifeforms on Earth to such an extent. He blamed this on our failure to broaden our imagination when it comes to...
There is not enough matter in galaxies to account for their motion. So what did the physicists do? They hypothesized two ad hoc mechanisms, “dark matter” and “dark energy” to explain the missing mass. They still haven’t had success in trying to find evidence for these elusive concepts...
20:26 Was Hubble the one to discover the redshift of galaxies?This was an error on my part; Hubble was using earlier work of Vesto Slipher on these redshifts, and combining it with his own measurements of distances using Leavitt’s law to arrive at the law that now bears his name; ...
Vast swarms of hidden galaxies may be secretly bathing the universe in a soft glow It's now one of humanity's ultimate questions — and until relatively recently, we didn't know enough to even ask it. How many universes exist? Related:Parallel Universes: Theories and Evidence ...
Solar Street Light: Solar street lights are used to provide illumination on the roads. It draws energy from the Sun and returns it at night as light energy. In a solar street light, the solar panel takes energy from the sun, and the battery stores th...
What powers the flight of soaring birds? What is the cause of the intense luminosity of active Galaxies, such as Quasars or Seyfert? What causes the northern and southern lights? What is a radiation curve? Why is the light inside a rainbow brighter than on the outside? What kind of star...