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Latest Polar jet Stories

Astronomers Measure Black Hole Radius
2012-09-27 19:16:53

Lee Rannals for redOrbit.com — Your Universe Online An international team of astronomers was able to measure the radius of a black hole for the first time. Researchers measured the radius of a black hole at the center of the galaxy M87, which lies about 50 million light-years away from the Milky Way. M87 has a black hole 6 billion times more massive than the Sun, and the team was able to observe the glow of matter near the edge of the black hole, or the "event horizon," using...

X-ray Signal Detected During Black Hole's Destruction Of Passing Star
2012-08-03 15:48:00

[Watch Video] Lee Rannals for redOrbit.com — Your Universe Online Astronomers have identified an X-ray signal that followed an observation made last year of a quiescent black hole in a distant galaxy. The black hole discovered by the team last year was seen erupting after shredding and consuming a passing star. Astronomers then witnessed days following the observation a distinctive X-ray signal that comes from matter on the verge of falling into the black hole. This...

New Hubble Image Shows Space Geyser
2012-07-03 14:32:32

Lee Rannals for redOrbit.com - Your Universe Online The Hubble Space Telescope has unleashed a new image of a geyser of hot gas flowing from a newborn star. In the new image, Herbig-Haro 110 is seen showing off a turbulent streamer of gas, streaking across the picture. "Resembling a Fourth of July skyrocket, Herbig-Haro 110 is a geyser of hot gas from a newborn star that splashes up against and ricochets from the dense core of a cloud of molecular hydrogen," NASA said....

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2012-06-07 19:11:03

Lee Rannals for redOrbit.com New research published in the journal Monthly Notices of the Royal Astronomical Society indicates that black holes are able to change gears, similar to an engine. Black holes are able to swallow up matter, and return a lot of energy to the Universe in exchange for the mass they eat. When a black hole attracts mass, they trigger the release of intense X-ray radiation and power strong jets.  However, scientists have been baffled because not all black...

Gamma Rays From Milky Way’s Past Show Historically Active Black Hole
2012-05-30 03:39:18

Lee Rannals for RedOrbit.com Gamma-ray beams seen in the Milky Way's central black hole suggest that the galaxy's center was much more active in the past, according to new research. Harvard University astrophysicists used an image taken by NASA's Fermi space telescope to reveal gamma-rays from the Milky Way millions of years ago. "These faint jets are a ghost or after-image of what existed a million years ago," Meng Su, an astronomer at the Harvard-Smithsonian Center for Astrophysics...

Spitzer Telescope Finds Hidden Jet
2012-03-02 04:03:59

NASA's Spitzer Space Telescope took this image of a baby star sprouting two identical jets (green lines emanating from fuzzy star). The jet on the right had been seen before in visible-light views, but the jet at left -- the identical twin to the first jet -- could only be seen in detail with Spitzer's infrared detectors. The left jet was hidden behind a dark cloud, which Spitzer can see through. The twin jets, in a system called Herbig-Haro 34, are made of identical knots of gas and dust,...

XMM-Newton Measures The Power Of Black-hole Driven Outflows
2012-02-28 05:01:35

A curious correlation between the mass of a galaxy's central black hole and the velocity of stars in a vast, roughly spherical structure known as its bulge has puzzled astronomers for years. An international team led by Francesco Tombesi at NASA's Goddard Space Flight Center in Greenbelt, Md., now has identified a new type of black-hole-driven outflow that appears to be both powerful enough and common enough to explain this link. Most big galaxies contain a central black hole weighing...

Astronomers Clock Record Wind In Stellar-Mass Black Hole
2012-02-21 15:21:23

Astronomers have clocked the fastest wind yet ever discovered blowing off a disk around a stellar-mass black hole. The team used NASA's Chandra X-ray Observatory to discover that the wind at this black hole is moving about 20 million miles per hour, or about 3 percent of the speed of light. According to NASA, this is nearly 10 times faster than other winds that have been seen around other stellar-mass black holes. "This is like the cosmic equivalent of winds from a category five...

Image 1 - Telescopes Pinpoint Black Hole's Outburst
2012-01-11 04:05:14

[ Watch the Video ] Using observations from NASA's Rossi X-ray Timing Explorer (RXTE) satellite and the National Science Foundation's (NSF) Very Long Baseline Array (VLBA) radio telescope, an international team of astronomers has identified the moment when a black hole in our galaxy launched super-fast knots of gas into space. Racing outward at about one-quarter the speed of light, these "bullets" of ionized gas are thought to arise from a region located just outside the black hole's...


Latest Polar jet Reference Libraries

6_c74ddf89e1e986e7de2e5e2451d6b60b2
2004-10-19 04:45:41

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...

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Word of the Day
omphalos
  • The navel or umbilicus.
  • In Greek archaeology: A central boss, as on a shield, a bowl, etc.
  • A sacred stone in the temple of Apollo at Delphi, believed by the Greeks to mark the 'navel' or exact center-point of the earth.
'Omphalos' comes from the ancient Greek.
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