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Home / News / Tags / X-ray
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The PSR J0108-1431 object, located just 770 light-years away from the Earth, is one of the closest pulsars ever observed, but its light is faint, as evidenced by previous optical surveys. It's a pulsar, a collapsed star that spins around its axis very fast, giving away light trails resembling those of a lighthou... |
27 February 2009
08:29 GMT |
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Magnetars are a specific category of neutron stars that possess an unusually strong magnetic field. There aren’t many such celestial objects observed so far, although they could prove extremely interesting to scientists, since their powerful magnetism could have a strange impact on matter. Unfortunately, the mo... |
20 November 2008
09:45 GMT |
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Under vacuum conditions, peeling off scotch tape from a roll even at a low speed causes small X-rays to emerge, showed early this week Juan Escobar, a University of California graduate student. During the experiment, a device slowly stripped the regular sticky tape off a roll at a speed of 1.2 inches (3.05 cm) per se... |
24 October 2008
13:21 GMT |
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Researchers from Durham University discovered that an enormous black hole located 500 million light years away from Earth emits a strong X-ray pulse. They stumbled upon the phenomenon as they were scouring about the middle of a galaxy called REJ1034+396, and it looks like the pulse is attributed to the gas arou... |
18 September 2008
02:55 GMT |
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Yet another exploding star was discovered in the Milky Way galaxy by Europe's X-ray space observatory, XMM-Newton, during a slew survey. It should have been spotted several days before the actual discovery by the thousands of astronomers throughout the world. According to estimations, the event should have been ... |
19 July 2008
04:41 GMT |
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The weight of supermassive black holes found in the center of galaxies is usually estimated by measuring the effects of the huge gravitational fields on the objects located in the vicinity of the black holes in question. Now, a new and precise weighing method developed at the University of California with the help of... |
17 July 2008
11:25 GMT |
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A new breakthrough in the dynamics of lightning has recently revealed the source of X-ray light emitted moments before the lightning strikes and could help in the near future advance the methods used to predict the moment and location where these phenomena occur."From a practical point of view, if we are going to eve... |
17 July 2008
07:03 GMT |
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So what is really the cause of apples remaining healthier than pears for a much longer time after being picked up? Scientists argue that it all has to do with oxygen and the way it behaves in order to reach the center of the fruit. By using one of the most powerful light sources in the world, Pieter Verboven of the C... |
12 July 2008
07:15 GMT |
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Black holes produce gravitational fields so powerful that they are able to shape space-time around them. However, what shape that particular volume of space surrounding the black hole might take under the influence of such an extreme gravitational field is unknown, as are the effects that might produce the powerful m... |
2 July 2008
05:28 GMT |
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When it was first discovered in the 1980s the deceptive shape of the object known as G350.1-0.3 indicated that it was most likely a background galaxy. Since nobody ever bothered to study it more closely, the object remained forgotten until recently when observations with ESA XMM-Newton X-ray Space Observatory reveale... |
11 June 2008
05:55 GMT |
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Investigations in the X-ray spectrum are critical for astronomers, especially in studying extremely violent interactions produced by black holes, neutron stars and dark energy. The problem with X-ray light is that it's hard to collect since most of the X-ray sources in the sky are very faint, not to mention that... |
10 June 2008
06:02 GMT |
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This is the second time Egypt conducts DNA tests in order to identify the mummy of an important pharaoh. Last year, the Egyptian authorities carried out a test involving the mummy of a female believed to be Queen Hatshepsut, but the results have never been disclosed. This time the 3,500 year old mummy of what experts... |
30 May 2008
04:18 GMT |
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The star was in fact known for a long time to be a magnetar, albeit SRON Netherlands Institute for Space Research astronomers have only recently discovered that it emits a strange high energy X-ray beam, sweeping across the surrounding medium as the star revolves around its axis. "I was looking for new sources of hig... |
22 May 2008
11:05 GMT |
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On January 9, researchers from Princeton University pointed NASA's Swift satellite in the direction of the NGC 2770 galaxy, hopping to the see afterglow of a supernova explosion known as SN 2007uy, which had occurred only one month before. Instead, the team got a struck of luck and captured a five minute X-ray b... |
22 May 2008
03:38 GMT |
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On April 25, a red dwarf star in the EV Lacertae constellation, known as Lacerta, ejected a massive solar flare equivalent to about a thousand solar flares emitted by the Sun. It was the brightest burst of light created by a normal star ever seen in the universe. The emission was first detected by NASA's Wind sa... |
20 May 2008
02:42 GMT |
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The vast majority of stars end their lives through supernova explosions while others, more massive, are thought unable to produce such explosions simply because they implode and collapse under their own weight only to produce a black hole. Since these particular types of stellar death don't generate brilliant em... |
10 May 2008
03:44 GMT |
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From our understanding of the universe as we see it we can safely say that ordinary matter all things we know are made of can account for only 5 percent of the total mass of the universe. The rest of 95 percent is made of dark energy and dark matter, elusive forms of energy and matter that haven't been yet direc... |
6 May 2008
09:16 GMT |
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Globular star clusters are believed to be amongst the oldest objects in the universe, some with ages exceeding 13 billion years. They can be usually found in the company of other galaxies as satellites, containing several million stars packed into a very small volume of space. Because they contain some of the first s... |
29 April 2008
03:33 GMT |
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Supermassive black holes are mostly found in galactic nuclei, ejecting matter in the form of particle jets at relativistic speeds during the 'feeding' process. According to theory, these particle jets are accelerated to these speeds by tightly-twisted magnetic fields generated in the close proximity of the ... |
24 April 2008
02:58 GMT |
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Light echoes are generated when interstellar or intergalactic gas is ionized by electromagnetic emissions originating several light years away, and responds accordingly by releasing the surplus energy by emitting light. By observing such light echoes, astronomers can witness events that occurred several hundred of th... |
19 April 2008
04:04 GMT |
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With the help of observations made with NASA, JAXA and ESA's X-ray satellites, astronomers revealed that the supermassive black hole at the center of our galaxy, dubbed Sagittarius A*, suffered a massive outburst some three centuries ago. Sagittarius A* is about 4 million times more massive than the Sun, however... |
16 April 2008
02:52 GMT |
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Quasars are basically black holes surrounded by large accretion disks of matter spinning around them. As matter is being drawn to the central black hole, it heats up and starts emitting high amounts of radiation, while powerful magnetic fields eject part of the material back into the surrounding space before crossing... |
7 April 2008
09:40 GMT |
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The Thomson-Radiate Extreme X-ray Source is an energetic light source emitting picosecond laser pulses and possibly one of the brightest laser light sources in the world at this moment. T-REX is a LLNL project developed in collaboration with the NIF & Photon Science Principle Directorate and the Physical Sciences Dir... |
7 April 2008
04:01 GMT |
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Remember the story about TSA guys struggling to figure out what the thing without a hard drive was? Here's the follow-up. As it turns out, TSA can't afford anymore such mistakes, and decided to X-ray the darn thing once and for all, take photos of its inner workings and send them out to its 45,000 employees... |
25 March 2008
18:31 GMT |
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When saying lightning, only one thing comes immediately to our mind, namely the image of a roughly linear electrical discharge through the Earth's atmosphere. This doesn't mean however that this is the one and only definition of a lightning. There is evidence, for example, that lightning discharges can take... |
3 March 2008
10:54 GMT |
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It has been long predicted that solar wind interactions would be able to generate massive amounts of X-ray radiation, however until now astronomers haven't been able to detect such emissions. Now, they have revealed what seems to be a large X-ray emission coming from the Eta Carinae binary system, determined by ... |
3 March 2008
08:32 GMT |
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X-ray images of the Kes75 supernova remnant shows it to house what seems to be a rapidly spinning neutron star, commonly known as a pulsar, which could have been created in the outcome of the supernova explosion. Lying at a distance of about 20,000 light years away from Earth, Kes75's pulsar located close to the... |
1 March 2008
04:31 GMT |
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Supernova SN 2007on was discovered last year in the location of what previously was a binary system, composed of at least one white dwarf and another stellar companion, most likely a regular slightly more massive star or possibly a second white dwarf. It is now known that the supernova is a Type Ia, meaning it was de... |
14 February 2008
03:46 GMT |
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Add water, sand, a bit of imagination and hope it won't collapse too soon, the rest is a piece of cake, scientists say. Quite odd, however, is the fact that sand doesn't require a specific amount of water to maintain its mechanical properties, feature observed by scientists during laboratory experiments whi... |
12 February 2008
06:46 GMT |
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Some of you might say: well, you have just answered your own question, X-ray is a form of radiation. However, nothing is always as simple as it seems. Any type of elementary particle emission is called radiation, while X-ray is a type of electromagnetic radiation, meaning photon emission, namely light. Optical light ... |
12 February 2008
02:56 GMT |
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Previously, astronomers believed that only black holes are capable to emit powerful X-ray jets, but a new study conducted at the Penn State University shows that, in fact, any class of object may be able to some extent to form powerful X-ray jets. A newly discovered neutron star seems to present features relatively s... |
5 February 2008
03:01 GMT |
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X-ray imaging techniques are being widely used into hospitals all over the world to put in evidence the contrast between bone and soft tissue. X-ray light penetrates the soft tissue relatively easy, but it is partially absorbed into bone. The problem with X-ray imaging is that X-ray light is too powerful to be absorb... |
29 January 2008
07:26 GMT |
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Astronomers were shocked to find that a known galaxy cluster has recently started emitting high amounts of X-ray and gamma ray light. Originally, they thought that such emissions could originate in the massive amounts of inert gas lying in intergalactic space, however ESA's Integral X-ray observatory has proven... |
25 January 2008
09:30 GMT |
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X-ray imaging has been serving our medical and industrial needs for more than a century, but it has a series of disadvantages that makes its use rather obsolete. For example, it can only produce a 2D image of the probed sample, cannot diagnose certain diseases, such as breast cancer or Alzheimer, nor metal fatigue as... |
21 January 2008
02:57 GMT |
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Black holes have such extreme gravitational fields that anything falling beyond the event horizon is ultimately destined to hit the point-like singularity, where it will probably remain forever. Believe it or not, but stable orbits around black holes are possible. Just because an object has extreme gravitational fiel... |
15 January 2008
04:33 GMT |
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Though the respective area of sky - where the new X-ray source was discovered - had been surveyed back in 2003, data showed that it hadn't been there at the respective moment. In March of last year, the Chandra X-ray Space Telescope, scanning the general direction of the galaxy Centaurus A located about 14 billi... |
11 January 2008
10:11 GMT |
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Supernovae explosions are some of the most powerful releases of energy in the universe known to man. A possible explosion of the Sun, predicted to occur in about 5 billion years in the future, would most likely destroy all the life on Earth, and possibly the entire solar system. Luckily, until this event would take ... |
8 January 2008
08:48 GMT |
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Wired reports the Radiation Shield Technologies of Miami has just announced its latest invention, Demron, the new standard in personal radiation protection, which should be known as the world's first nuclear radiation-blocking fabric. Just to get the idea of how huge this is, you should be aware of the horrific ... |
13 December 2007
13:41 GMT |
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The new piece of equipment currently under development at the Diamond Light Source facility, in the UK, will have as a result the birth of the first synchrotron, which will operate under high pressures that could exceed 7,000 time that of the Earth's atmosphere, equivalent to over three times the pressure on the... |
24 November 2007
04:41 GMT |
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Not only the observable universe is not heavy enough to explain its current configuration, but calculations show that the previously thought mass is actually smaller by 10 to 20 percent, which brings even more questions into discussion. The subject involving the mass of the observable universe is one of the hottest t... |
5 November 2007
03:50 GMT |
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It is huge, that's for sure, but no one has seen it or knows what it is; it's invisible and light is not emitted or reflected by it. The enigma of the dark matter has been haunting the astronomers since it was first discovered in the 1970s. It possesses mass and measurable gravitation and an analysis of the... |
2 October 2007
04:27 GMT |
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This is like a knife for the bacteria: a team at Rensselaer Polytechnic Institute has made a razor-like material on the "cutting edge" of nanotechnology. The nanoblades are made of magnesium and result from a different nanostructure growth technique than the traditional one. But we won't cut bacteria with them;... |
26 September 2007
04:53 GMT |
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Neutron stars are one of the few ways a star ends its life. They are formed from the remains of a massive star after it had already exploded into a supernova that condenses into an extremely dense core. They usually have masses 1.35 to about 2.1 times greater than that of our Sun, while being 30,000 to 70,000 times ... |
23 July 2007
08:23 GMT |
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Everybody knows refrigerators are indispensable household appliances that transfer heat from inside it to the external environment, cooling the contents to a temperature below ambient. But while commercial refrigerators get bigger to fit more food and drinks, a group of scientists worked on developing the smallest o... |
11 July 2007
04:18 GMT |
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NASA created a new office, the Einstein Probes Office, in Greenbelt, Maryland, hosted by the Goddard Space Flight Center, which will study some of the strange phenomena of the Universe, ranging from black holes and cosmic microwave background radiation to the elusive dark energy.It will host many science missions t... |
9 July 2007
05:49 GMT |
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The free electron laser has almost the same properties as the optical type, meaning the coherent beam of electron radiation, but uses different operating principles to create the beam. Unlike gas, liquid, or solid-state laser applications, such as diode lasers, which rely on bound atomic or molecular states, Free el... |
26 June 2007
04:21 GMT |
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Scientists demonstrated that ten thousand molecules can perform aligning pirouettes through a process known as ultrafast intramolecular electronic charge separation, appearing during photo-chemical reactions.A study performed at the Max-Born-Institute for Nonlinear Optics and Ultrafast Spectroscopy and at the Ludwig... |
20 June 2007
04:20 GMT |
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What is electromagnetically induced transparency? It's a coherent optical nonlinearity which renders a medium transparent over a narrow spectral range within an absorption line. Extreme dispersion is also created within this transparency "window" which leads to "slow light."Now, a team of scientists, made up of... |
7 June 2007
05:55 GMT |
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What happens when you throw a golf ball at a locomotive speeding toward you? The ball will bounce off it and come flying back at you with tremendous energy, just before you get run over. This is what scientists are trying to study with a new generation of x-ray lasers.Scientists developed a new method of producing i... |
6 June 2007
02:52 GMT |
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It's easy to see on a product pack its nutritional content, but can you know this when it's about meat? And especially the fat content?Now, New Zealand food industry use a breakthrough x-ray based technology to ensure that beef exported to make American beefburgers obeys the US fat content regulations. Thes... |
4 June 2007
03:35 GMT |
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