Sentences with phrase «x-ray-emitting iron atoms»

Atoms in the corona are so hot that they give up many of their electrons — iron atoms have been known to lose up to half of their original count.

The reverse shock wave will continue to superheat the cool iron atoms, eventually reaching the remnant's core sometime in the next few hundred years.

Astronomers had theorized but never witnessed this remnant - stoking until last November, when Hiroya Yamaguchi of the Harvard - Smithsonian Center for Astrophysics discovered a bizarre signature in the remnant's X-rays: Cool iron atoms clustered inside a ring of their fevered ferrous cousins.

Brilliant outbursts of radiation from near the black hole had spread outward, struck iron atoms in surrounding gas clouds, and then reflected toward Earth, becoming visible here long after the original eruption.

When a laser beam destroys this order, the iron atoms are brought closer together and begin to behave like magnets,» says HZDR physicist Rantej Bali.

Heinrich used a scanning tunneling microscope to align the iron atoms so each one takes on a magnetic polarity opposite that of its neighbor.

«The alloy possesses a highly ordered structure, with layers of iron atoms that are separated by aluminum atomic layers.

Heinrich highlighted his breakthrough by configuring 96 iron atoms five times, with each configuration representing one byte of code, to spell IBM's motto: T - H - I - N - K.

IC 3639 turns out to be glowing extremely bright due to emission from hot Iron atoms whose origin is not fully understood.»

At the same time, it is also gravitationally red - shifted because some of the iron atoms are very close to the black hole, where time itself and thus all light waves are stretched.

Some of the X-rays from the corona, the Cambridge researchers realized, would shine back onto the accretion disk and excite iron atoms there.

«There's a change in the iron atom called a spin transition, where the atom shrinks and becomes denser because of the intense pressure.

And some of those iron atoms would thereupon fluoresce, emitting X-rays of their own — not over the whole band this time but at a single precise line in the energy spectrum: 6.4 kilo - electron volts, which is the energy an electron loses when it falls from one shell in an iron atom to a lower one.

Because the iron atoms in MCG -6-30-15 are moving, astronomers don't see the line right at 6.4 kilo - electron volts.

Finally they added a fluorescent iron line, amazingly bright and red - shifted so strongly that it had to be coming from iron atoms streaking just over the event horizon at near - light speed.

For the iron atoms to get that bright so close to the black hole in MCG -6-30-15, the hole has to be rotating rapidly.

An emission line like that in the hands of an astronomer is like a radar gun in the hands of a cop: It reveals how fast the X-ray-emitting iron atoms are traveling.

TOP: A typical two - element alloy consists of iron atoms (red spheres) and boron atoms (blue spheres), which naturally arrange themselves into a crystalline pattern upon cooling.

I knew that heme, the oxygen - carrying molecule in hemoglobin, contained an iron atom within a porphyrin ring (for more information on porphyrin chemistry see this site at Washburn University), but Dr. Datta - Gupta and his laboratory technician attempted to chemically add different metals such as copper, magnesium, or manganese to porphyrins using column chromatography.

These iron atoms then migrate deep into the material, leaving a hole in the surface that can clearly be seen in the pictures taken with the scanning tunnelling microscope.

Iron atoms travel to the surface from within the material, and right next to the platinum nanoparticle, an additional iron - oxide island is created.

Indeed, this is what an international group of researchers based in Germany, Poland and South Korea have now demonstrated is possible using iron atoms.

The spectrometer is sensitive to wavelengths of light emitted by iron atoms that have lost all but 11 or 14 of their electrons.

In the magnetic vortices — the skyrmions — the «atomic bar magnets» of the iron atoms spin around (orange and green arrows) and have an opposite orientation in their centres (blue arrows).

By studying iron extracted from cores drilled in rocks similar to these in Karijini National Park, Western Australia, UW - Madison researchers determined that half of the iron atoms had originated in shallow oceans after being processed by microbes 2.5 billion years ago.

An «emission line» like that in the hands of an astronomer is likea radar gun in the hands of a cop: It reveals how fast theX - ray - emitting iron atoms are traveling.

This energy contributesto the bright glow of iron atoms and other ultrahot matter swirling ina region called the corona.

And some of those ironatoms would thereupon fluoresce, emitting X rays of their own — not overthe whole band this time but at a single precise line in the energyspectrum: 6.4 kilo - electron volts, which is the energy an electronloses when it falls from one shell in an iron atom to a lower one.

At the same time it is also gravitationally red - shifted, because some of the iron atoms are very close to the black hole, wheretime itself and thus all light waves are stretched.

Because the iron atoms inMCG -6-30-15 are moving, astronomers don't see the line right at 6.4kilo - electron volts.

For the iron atoms to get that bright so close to the black hole inMCG -6-30-15, the hole has to be rotating rapidly.

It turned out to be a polymer similar to chitin, containing long chains of amino acids, possible enzymes or transport proteins, and thousands of sites that each cupped a single iron atom.

Some of the X rays from thecorona, the Cambridge researchers realized, would shine back onto theaccretion disk and excite iron atoms there.

A biophysicist suggested that the iron atoms trapped in the nanobacterium's cell walls could be on - off switches, encoding in chains of Boolean logic information analogous to information encoded in DNA.

The X-ray glow of those iron atoms is sointense that gravitational heating alone can not explain it.

And if the iron atoms arefluorescing that brightly, it means something is wrong with thestandard model of black - hole accretion disks.

By growing iron atoms into incredibly small particles, Zhang increases the number of electrons they release as much as 1,000-fold.

An extra plane of iron atoms was inserted every ten repeats, substantially changing the magnetic properties.

Magnetic order is a common phenomenon in three - dimensional materials, such as ferromagnetic order in iron bar magnets, where the magnetic moments on all iron atoms point in the same direction.

This winter he coaxed a cluster of 12 iron atoms to store one bit of data, consisting of either a 1 or a 0.

Approximately 1.1 x 10 to the power of 13 moles of iron atoms — that's more than 600 million tonnes of the element — are used by the world's manufacturing industries every year.

Astronomers believe the bullets, which are about 10 times the size of our solar system, are clumps of iron atoms (bright blue tips) and other gas ejected from within the nebula after an unknown violent event.

Produced by many animals, some plants, and bacteria, ferritin can clutch up to 4500 iron atoms in its central storage cavity.

In the catalytic process, three iron atoms are fused to afford the tri-iron cluster Fe3 (COT) 3, which is a hydrocarbon analog of Dewar's classic Fe3 (CO) 12 complex.

The flexible MOFs they tested are based on cobalt and iron atoms dispersed throughout the structure, with links of benzenedipyrazolate (bdp).

The finding builds on the team's 2014 discovery, also published in Science, of the Majorana fermion in a single atom - wide chain of iron atoms atop a lead substrate.

By studying iron extracted from cores drilled in rocks similar to these in Karijini National Park, Western Australia, UW — Madison researchers determined that half of the iron atoms had originated in shallow oceans after being processed by microbes 2.5 billion years ago.

A magnetized scanning tunneling microscope tip was used to probe the spin property of the quantum wave function of the Majorana fermion at the end of a chain of iron atoms on the surface of a superconductor made of lead.

The material is an amorphous steel alloy, a promising subclass of steel alloys made of arrangements of atoms that deviate from steel's classical crystal - like structure, where iron atoms occupy specific locations.

Typically, scanning tunneling microscopy (STM) involves dragging a fine - tipped electrode over a structure, in this case the chain of iron atoms, and detecting its electronic properties, from which an image can be constructed.