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Latest Polar jet Stories

0dfaf57370d6767aa1e5da0ce1e92b6d1
2008-01-10 00:00:00

A dramatic new Chandra image of the nearby galaxy Centaurus A provides one of the best views to date of the effects of an active supermassive black hole. Opposing jets of high-energy particles can be seen extending to the outer reaches of the galaxy, and numerous smaller black holes in binary star systems are also visible. The image was made from an ultra-deep look at the galaxy Centaurus A, equivalent to more than seven days of continuous observations. Centaurus A is the nearest galaxy to...

c7350b425443d9deb0c300ea413947c41
2006-07-25 12:25:00

Cambridge, MA - In the distant, young universe, quasars shine with a brilliance unmatched by anything in the local cosmos. Although they appear starlike in optical telescopes, quasars are actually the bright centers of galaxies located billions of light-years from Earth. The seething core of a quasar currently is pictured as containing a disk of hot gas spiraling into a supermassive black hole. Some of that gas is forcefully ejected outward in two opposing jets at nearly the speed of light....

a3a0da2ebcddc45ab6fd6d29873ded8a1
2006-07-24 16:12:43

Shoes may not come in every color, but space objects do. All objects in space, everything from dust to distant galaxies, give off a rainbow of light - including light our eyes can't see. That's where NASA's Great Observatories come in. Together, they help astronomers see all the shades of the cosmos. A new false-colored image from NASA's Hubble, Chandra and Spitzer space telescopes demonstrates this principle beautifully. The multi-hued portrait shows a giant jet of particles that has been...

2ce9bdd949ec057f142a21d6f673a8131
2006-06-27 11:23:47

A team of scientists, including researchers in the University of Southampton's School of Physics and Astronomy, has shown that black holes are not the only known objects in the universe to produce infrared light from beams of particles being shot into space at nearly the speed of light. Previously, these steady "Ëœrelativistic jets' were only seen from black holes which form part of a black hole X-ray binary, a system containing a black hole orbited by a normal star which is so...

2006-04-25 00:45:58

By Deborah Zabarenko WASHINGTON (Reuters) - Black holes turn out to be "green." These monstrous matter-sucking drains in space are the most fuel-efficient engines in the universe, researchers said on Monday. Just how efficient? If a car could use this kind of engine, it could theoretically go about a billion miles (1.6 billion km) on a gallon of gas, said Steve Allen of Stanford University in California. Unfortunately, no earthly car could do this, as black holes are fueled by...

2006-04-25 00:45:00

By Deborah Zabarenko WASHINGTON (Reuters) - Black holes turn out to be "green." These monstrous matter-sucking drains in space are the most fuel-efficient engines in the universe, researchers said on Monday. Just how efficient? If a car could use this kind of engine, it could theoretically go about a billion miles (1.6 billion km) on a gallon of gas, said Steve Allen of Stanford University in California. Unfortunately, no earthly car could do this, as black holes are fueled by matter lured by...

2006-04-24 19:45:00

By Deborah Zabarenko WASHINGTON - Black holes turn out to be "green." These monstrous matter-sucking drains in space are the most fuel-efficient engines in the universe, researchers said on Monday. Just how efficient? If a car could use this kind of engine, it could theoretically go about a billion miles (1.6 billion km) on a gallon of gas, said Steve Allen of Stanford University in California. Unfortunately, no earthly car could do this, as black holes are fueled by matter lured by the...

c7764a5bb5806c9ff3f15feb11819bbb1
2005-12-06 07:25:00

Astronomers Track Massive Shockwaves in Plasma Escaping Newborn Star Like traffic on a freeway, plasma spewing from the poles of newborn stars moves in clumps that travel at different speeds. When fast-moving particles run into slower material on these cosmic freeways, the resulting "traffic jams" create massive shock waves that travel trillions of miles. Thanks to highly resolved images from the Hubble Space Telescope, a team of astronomers have created the first moving pictures of one of...

cdfbee907737c573b40520866eaa67a01
2005-06-30 07:35:00

PASADENA, Calif. -- Applied physicists at the California Institute of Technology have devised a plasma experiment that shows how huge long, thin jets of material shoot out from exotic astrophysical objects such as young stars, black holes, and galactic nuclei. Reporting in an upcoming issue of the journal Physical Review Letters, applied physics professor Paul Bellan, his graduate student Gunsu Yun, and postdoctoral scholar Setthivoine You describe how they create jets of plasma at will in...

fd1c6100d6bccd861319d952bbd71f701
2005-06-15 09:24:37

Cambridge, MA -- Astronomers find jets everywhere when they look into space. Small jets spout from newborn stars, while huge jets blast out of the centers of galaxies. Yet despite their commonness, the processes that drive them remain shrouded in mystery. Even relatively nearby stellar jets hide their origins behind almost impenetrable clouds of dust. All stars, including our sun, pass through a jet phase during their "childhood," so astronomers are eager to understand how jets form and how...


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
baudekin
  • A rich embroidered or brocaded silk fabric woven originally with a warp of gold thread.
'Baudekin' seems to be an alternative form of 'baldachin,' from the Italian 'Baldacco,' Baghdad, the city where the material was made.
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