[x-Ray images:]
X rayed
Image by susivinh
Yesterday we spent well over 2 hours at the ER. Sara got an x-ray just to confirm what I suspected: she has a respiratory infection. Crazy how with this warm and sunny weather she can be so sick…
Anyway, her x-ray reminded me of this shot I tool a few days ago. Kind of looks like a plant’s x’ray too.
Darwin’s Airport Terminal Exit February 2012
Image by kenhodge13
Local Aboriginal x-ray painting is the main motif used in the weatherproof roof between the car park and the Darwin Airport Terminal.
Here’s Janice
Image by mtsofan
Jan’s reflection in the glass plate on some x-ray equipment.
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[x-Ray images:]
Massive Black Hole Implicated in Stellar Destruction (NASA, Chandra, Hubble, 01/04/10)
Image by NASA’s Marshall Space Flight Center
Evidence from NASA’s Chandra X-ray Observatory and the Magellan telescopes suggest a star has been torn apart by an intermediate-mass black hole in a globular cluster. In this image, X-rays from Chandra are shown in blue and are overlaid on an optical image from the Hubble Space Telescope. The Chandra observations show that this object is a so-called ultraluminous X-ray source (ULX). An unusual class of objects, ULXs emit more X-rays than stars, but less than quasars. Their exact nature has remained a mystery, but one suggestion is that some ULXs are black holes with masses between about a hundred and a thousands times that of the Sun.
Data optical light obtained with the Magellan I and II telescopes in Las Campanas, Chile, also provides intriguing information about this object, which is found in the elliptical galaxy NGC 1399 in the Fornax cluster. The spectrum reveals emission from oxygen and nitrogen but no hydrogen, a rare set of signals from within globular clusters. The combination of this unusual X-ray and optical emission makes this a remarkable object. This leads the researchers to suspect that a white dwarf star strayed too close to the intermediate-mass black hole and was ripped apart by tidal forces.
Another interesting aspect to this object is that it is found within a globular cluster, a very old, very tight grouping of stars. Astronomers have long suspected globular clusters contained intermediate-mass black holes, but there has been no conclusive evidence of their existence there to date. If confirmed, this finding would represent the first such substantiation.
Read entire caption/view more images: chandra.harvard.edu/photo/2010/ngc1399/
Image credit: X-ray: NASA/CXC/UA/J. Irwin et al. Optical: NASA/STScI
Caption credit: Harvard-Smithsonian Center for Astrophysics
Read more about Chandra:
www.nasa.gov/chandra
p.s. You can see all of our Chandra photos in the Chandra Group in Flickr at: www.flickr.com/groups/chandranasa/ We’d love to have you as a member!
Crushed
Image by warrenski
On this initial X-ray, you can see the orthopaedic surgeon’s markings indicating that 30% of vertebrae L1 was crushed. Corrective surgery was a tough call, as it always is where the spine is concerned. However, due to the presence of splintered bone matter in the immediate vicinity of the spinal nerve, it was a process of weighing up risks.
In the end, I opted for the suggested spinal fusion procedure. Bone shavings were obtained from my pelvis in order to graft onto the damaged vertebrae. Then, titanium rods were attached with pedicle screws in order to stabilise the spine, and ensure that fusion is a success.
[x-Ray images:]
Titanium rods
Image by warrenski
This X-ray shows a view of my spine, oriented as though you were looking at my back.
No, all that metal doesn’t trigger airport security… in case you were wondering. 
A Supernova Cocoon Breakthrough (NASA, Chandra, Hubble, 05/15/12)
Image by NASA’s Marshall Space Flight Center
Observations with NASA’s Chandra X-ray Observatory have provided the first X-ray evidence of a supernova shock wave breaking through a cocoon of gas surrounding the star that exploded. This discovery may help astronomers understand why some supernovas are much more powerful than others.
On Nov. 3, 2010, a supernova was discovered in the galaxy UGC 5189A, located about 160 million light years away. Using data from the All Sky Automated Survey telescope in Hawaii taken earlier, astronomers determined this supernova exploded in early October 2010 (in Earth’s time-frame).
This composite image of UGC 5189A shows X-ray data from Chandra in purple and optical data from Hubble Space Telescope in red, green and blue. SN 2010jl is the very bright X-ray source near the top of the galaxy.
A team of researchers used Chandra to observe this supernova in December 2010 and again in October 2011. The supernova was one of the most luminous that has ever been detected in X-rays.
In optical light, SN 2010jl was about ten times more luminous than a typical supernova resulting from the collapse of a massive star, adding to the class of very luminous supernovas that have been discovered recently with optical surveys. Different explanations have been proposed to explain these energetic supernovas including (1) the interaction of the supernova’s blast wave with a dense shell of matter around the pre-supernova star, (2) radioactivity resulting from a pair-instability supernova (triggered by the conversion of gamma rays into particle and anti-particle pairs), and (3) emission powered by a neutron star with an unusually powerful magnetic field.
In the first Chandra observation of SN 2010jl, the X-rays from the explosion’s blast wave were strongly absorbed by a cocoon of dense gas around the supernova. This cocoon was formed by gas blown away from the massive star before it exploded.
In the second observation taken almost a year later, there is much less absorption of X-ray emission, indicating that the blast wave from the explosion has broken out of the surrounding cocoon. The Chandra data show that the gas emitting the X-rays has a very high temperature — greater than 100 million degrees Kelvin – strong evidence that it has been heated by the supernova blast wave.
The energy distribution, or spectrum, of SN 2010jl in optical light reveals features that the researchers think are explained by the following scenario: matter around the supernova has been heated and ionized (electrons stripped from atoms) by X-rays generated when the blast wave plows through this material. While this type of interaction has been proposed before, the new observations directly show, for the first time, that this is happening.
This discovery therefore supports the idea that some of the unusually luminous supernovas are caused by the blast wave from their explosion ramming into the material around it.
In a rare example of a cosmic coincidence, analysis of the X-rays from the supernova shows that there is a second unrelated source at almost the same location as the supernova. These two sources strongly overlap one another as seen on the sky. This second source is likely to be an ultraluminous X-ray source, possibly containing an unusually heavy stellar-mass black hole, or an intermediate mass black hole.
These results were published in a paper appearing in the May 1st, 2012 issue of The Astrophysical Journal Letters. The authors were Poonam Chandra (Royal Military College of Canada, Kingston, Canada), Roger Chevalier and Christopher Irwin (University of Virginia, Charlottsville, VA), Nikolai Chugai (Institute of Astronomy of Russian Academy of Sciences, Moscow, Russia), Claes Fransson (Stockholm University, Sweden), and Alicia Soderberg (Harvard-Smithsonian Center for Astrophysics, Cambridge, MA).
Read entire caption/view more images: chandra.harvard.edu/photo/2012/sn2010/
Image credit: X-ray: NASA/CXC/Royal Military College of Canada/P.Chandra et al); Optical: NASA/STScI
Caption credit: Harvard-Smithsonian Center for Astrophysics
Read more about Chandra:
www.nasa.gov/chandra
p.s. You can see all of our Chandra photos in the Chandra Group in Flickr at: www.flickr.com/groups/chandranasa/ We’d love to have you as a member!
_____________________________________________
These official NASA photographs are being made available for publication by news organizations and/or for personal use printing by the subject(s) of the photographs. The photographs may not be used in materials, advertisements, products, or promotions that in any way suggest approval or endorsement by NASA. All Images used must be credited. For information on usage rights please visit: www.nasa.gov/audience/formedia/features/MP_Photo_Guidelin…
[x-Ray images:]
Galaxy Cluster, Quasar 3C 186 (NASA, Chandra, 10/26/10)
Image by NASA’s Marshall Space Flight Center
NASA’s Chandra X-ray Observatory has observed an unusual galaxy cluster that contains a bright core of relatively cool gas surrounding a quasar called 3C 186. This is the most distant such object yet observed, and could provide insight into the triggering of quasars and the growth of galaxy clusters.
This composite image of the cluster surrounding 3C 186 includes a new, deep image from Chandra (blue) showing emission from gas surrounding the point-like quasar near the center of the cluster. Chandra X-ray spectra show that the temperature of the gas drops from 80 million degrees on the outskirts of the cluster down to 30 million in the core. This drop in temperature occurs because intense X-ray emission from the gas cools it. Optical data from the Gemini telescope in yellow show the stars and galaxies in the field of view.
What makes this particular galaxy cluster and its strong cooling core interesting is its age. 3C 186 is about 8 billion light years away from Earth, making it the most distant known galaxy cluster to contain a prominent cooling core. Because of its large distance the cluster is being seen when the Universe is relatively young, at less than half its current age.
Previous observations have revealed large numbers of clusters with strong cooling cores at smaller distances from the Earth, less than about 6 billion light years. Far fewer, however, have been found at larger distances between 6 and 8 billion light years. Considering its young age this "precocious" galaxy cluster around 3C 186 appears to be surprisingly well formed.
One explanation why fewer cooling cores are seen at larger distances is that these younger clusters experience higher rates of merging with other clusters or galaxies. These mergers would destroy the cooling cores. When coupled with the fact that it takes cooling cores a long time to form, this would make them rare in the earlier stages of the Universe.
Since this cluster was only found serendipitously through a Chandra survey of a small sample of radio sources, it is possible that many more similar objects exist at large distances. If these are discovered, it may revise our understanding of how galaxy clusters developed during this period of the Universe’s history.
This galaxy cluster is also the most distant ever seen to contain a quasar. Only one other galaxy cluster containing a bright quasar has had a detailed study of its X-ray emitting gas, and this is located much closer to the Earth than 3C 186. In principle, the cooling gas near 3C 186 can provide enough fuel to support the growth of the supermassive black hole, the power source for the quasar.
This object also provides an interesting chance to study the effects of a quasar within a galaxy cluster environment. The energy generated by the black hole can be released into the cluster not just via mechanical power in a jet, but also by radiation from the bright quasar. This might result in a powerful wind that heats the surrounding gas and prevents further cooling.
The cluster is likely to be an ancestor of well-known nearby clusters such as Perseus and MS 0735.6+7421, where jets powered by the central black hole are boring out cavities in the cluster gas. It is much more distant and younger than these other two clusters and the radio source associated with 3C 186 is smaller and younger than in Perseus and MS 0735.6+7421.
Credits: NASA/CXC/SAO/A.Siemiginowska et al. Optical: AURA/Gemini Obs.
Read entire caption/view more images: chandra.harvard.edu/photo/2010/3c186/
Caption credit: Harvard-Smithsonian Center for Astrophysics
Read more about Chandra:
www.nasa.gov/chandra
p.s. You can see all of our Chandra photos in the Chandra Group in Flickr at: www.flickr.com/groups/chandranasa/ We’d love to have you as a member!
Fargo14
Image by jdeamond
Julia’s x-ray of her broken wrist she got while roller skating at Gay Skate for Pride Week in Fargo
[x-Ray images:]
SC 145479
Image by otisarchives2
At United States Army Station Hospital in India. Right, Captain Albert C. King of San Antonio, TX and Chief of X-ray Service, making a fluoroscope of the chest. Left, Corporal Abram W. Sommers of Baltimore, MD assisting at the controls.
06610028
Image by IAEA Imagebank
XRF Spectrometer
The pictures show the portable X-ray fluorescence spectrometer being prepared by the staff of the IAEA Laboratories and the Conservation Science Department to perform analysis of the “Saliera”. The analysis is performed in a fully non-destructive way. Kunsthistorische Museum, Vienna, Austria 12 January 2006
Copyright: IAEA Imagebank
Photo Credit: Dean Calma / IAEA
Primary Mirror Segment Cryogenic Testing
Image by NASA Webb Telescope
Three James Webb Space Telescope mirror segments are mounted on a test stand July 30 at the X-ray & Cryogenic Facility at NASA’s Marshall Space Flight Center in Huntsville, Ala. Engineers and technicians from NASA and Ball Aerospace & Technologies Corp. of Boulder, Colo., will subject the segments to temperatures reaching minus 414 degrees Fahrenheit — ensuring the mirror segments can withstand the extreme temperatures of space. The Webb Space Telescope is scheduled to launch to space in 2014 to study the formation of the universe and the evolution of our solar system.
Credit: NASA/MSFC
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[x-Ray images:]
A cluster of galaxies in the constellation Hydra.
Image by Smithsonian Institution
Description: The Chandra X-ray image of Hydra A, a galaxy cluster 840 million light years from Earth, shows strands of 35-40 million degree Celsius gas embedded in a large cloud of equally hot gas that is several million light years across. Also a bright white wedge of hot multimillion degree Celsius gas is seen pushing into the heart of the cluster. As the largest gravitationally bound objects in the universe, galaxy clusters provide crucial clues for understanding the origin and fate of the universe.
Creator/Photographer: Chandra X-ray Observatory
NASA’s Chandra X-ray Observatory, which was launched and deployed by Space Shuttle Columbia on July 23, 1999, is the most sophisticated X-ray observatory built to date. The mirrors on Chandra are the largest, most precisely shaped and aligned, and smoothest mirrors ever constructed. Chandra is helping scientists better understand the hot, turbulent regions of space and answer fundamental questions about origin, evolution, and destiny of the Universe. The images Chandra makes are twenty-five times sharper than the best previous X-ray telescope. NASA’s Marshall Space Flight Center in Huntsville, Ala., manages the Chandra program for NASA’s Science Mission Directorate in Washington. The Smithsonian Astrophysical Observatory controls Chandra science and flight operations from the Chandra X-ray Center in Cambridge, Massachusetts.
Medium: Chandra telescope x-ray
Date: 1999
Persistent URL: http://photography.si.edu/SearchImage.aspx?id=5348
Repository: Smithsonian Astrophysical Observatory
Gift line: NASA/CXC/SAO
Accession number: hydraA
A Star Explodes, Turns Inside-Out (NASA, Chandra, Spitzer, 03/29/12)
Image by NASA’s Marshall Space Flight Center
A new X-ray study of the remains of an exploded star indicates that the supernova that disrupted the massive star may have turned it inside out in the process. Using very long observations of Cassiopeia A (or Cas A), a team of scientists has mapped the distribution of elements in the supernova remnant in unprecedented detail. This information shows where the different layers of the pre-supernova star are located three hundred years after the explosion, and provides insight into the nature of the supernova.
An artist’s illustration on the left shows a simplified picture of the inner layers of the star that formed Cas A just before it exploded, with the predominant concentrations of different elements represented by different colors: iron in the core (blue), overlaid by sulfur and silicon (green), then magnesium, neon and oxygen (red). The image from NASA’s Chandra X-ray Observatory on the right uses the same color scheme to show the distribution of iron, sulfur and magnesium in the supernova remnant. The data show that the distributions of sulfur and silicon are similar, as are the distributions of magnesium and neon. Oxygen, which according to theoretical models is the most abundant element in the remnant, is difficult to detect because the X-ray emission characteristic of oxygen ions is strongly absorbed by gas in along the line of sight to Cas A, and because almost all the oxygen ions have had all their electrons stripped away.
A comparison of the illustration and the Chandra element map shows clearly that most of the iron, which according to theoretical models of the pre-supernova was originally on the inside of the star, is now located near the outer edges of the remnant. Surprisingly, there is no evidence from X-ray (Chandra) or infrared (Spitzer Space Telescope) observations for iron near the center of the remnant, where it was formed. Also, much of the silicon and sulfur, as well as the magnesium, is now found toward the outer edges of the still-expanding debris. The distribution of the elements indicates that a strong instability in the explosion process somehow turned the star inside out.
This latest work, which builds on earlier Chandra observations, represents the most detailed study ever made of X-ray emitting debris in Cas A, or any other supernova remnant resulting from the explosion of a massive star. It is based on a million seconds of Chandra observing time. Tallying up what they see in the Chandra data, astronomers estimate that the total amount of X-ray emitting debris has a mass just over three times that of the Sun. This debris was found to contain about 0.13 times the mass of the Sun in iron, 0.03 in sulfur and only 0.01 in magnesium.
The researchers found clumps of almost pure iron, indicating that this material must have been produced by nuclear reactions near the center of the pre-supernova star, where the neutron star was formed. That such pure iron should exist was anticipated because another signature of this type of nuclear reaction is the formation of the radioactive nucleus titanium-44, or Ti-44. Emission from Ti-44, which is unstable with a half-life of 63 years, has been detected in Cas A with several high-energy observatories including the Compton Gamma Ray Observatory, BeppoSAX, and the International Gamma-Ray Astrophysics Laboratory (INTEGRAL).
These results appeared in the February 20th issue of The Astrophysical Journal in a paper by Una Hwang of Goddard Space Flight Center and Johns Hopkins University, and (John) Martin Laming of the Naval Research Laboratory.
Read entire caption/view more images: www.nasa.gov/mission_pages/chandra/multimedia/abell383.html
Credit: Illustration: NASA/CXC/M.Weiss; Image: NASA/CXC/GSFC/U. Hwang & J. Laming
Read entire caption/view more images: chandra.harvard.edu/photo/2012/casa/
Caption credit: Harvard-Smithsonian Center for Astrophysics
Read more about Chandra:
www.nasa.gov/chandra
p.s. You can see all of our Chandra photos in the Chandra Group in Flickr at: www.flickr.com/groups/chandranasa/ We’d love to have you as a member!
_____________________________________________
These official NASA photographs are being made available for publication by news organizations and/or for personal use printing by the subject(s) of the photographs. The photographs may not be used in materials, advertisements, products, or promotions that in any way suggest approval or endorsement by NASA. All Images used must be credited. For information on usage rights please visit: www.nasa.gov/audience/formedia/features/MP_Photo_Guidelin…
[x-Ray images:]
Essential Logic – Eugene – UK – 1980
Image by Affendaddy
With Lora Logic from X Ray Spex. Laura left the band in Sept. 1977 short after X Ray Spex had a contract with VIRGIN. Laura left (then 16) because she couldn’t handle both – School and Music (Hats Off To Laura) . So she first finnished school and than came back to music business.
Essential Logic – Flora Force – UK – 1979-
Image by Affendaddy
With Lora Logic from X Ray Spex. Laura left the band in Sept. 1977 short after X Ray Spex had a contract with VIRGIN. Laura left (then 16) because she couldn’t handle both – School and Music (Hats Off To Laura) . So she first finnished school and than came back to music business.
[x-Ray images:]
fuel cell
Image by Argonne National Laboratory
Chemist Debbie Myers demonstrates the fuel cell fixture created to allow in situ X-ray study of transition metals. Photo courtesy of Argonne National Laboratory.
Primary Mirror Segment Cryogenic Testing
Image by NASA Webb Telescope
Six of the 18 James Webb Space Telescope mirror segments are being prepped to move into the X-ray and Cryogenic Facility, or XRCF, at NASA’s Marshall Space Flight Center in Huntsville, Ala., to eventually experience temperatures dipping to a chilling -414 degrees Fahrenheit to ensure they can withstand the extreme space environments. The test chamber takes approximately five days to cool a mirror segment to cryogenic temperatures. Marshall’s X-ray & Cryogenic Facility is the world’s largest X-ray telescope test facility and a unique, cryogenic, clean room optical test location.
Credit: NASA/MSFC/Emmett Givens
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Primary Mirror Segment Cryogenic Testing
Image by NASA Webb Telescope
Six of the 18 James Webb Space Telescope mirror segments are being prepped to move into the X-ray and Cryogenic Facility, or XRCF, at NASA’s Marshall Space Flight Center in Huntsville, Ala., to eventually experience temperatures dipping to a chilling -414 degrees Fahrenheit to ensure they can withstand the extreme space environments. The test chamber takes approximately five days to cool a mirror segment to cryogenic temperatures. Marshall’s X-ray & Cryogenic Facility is the world’s largest X-ray telescope test facility and a unique, cryogenic, clean room optical test location.
Credit: NASA/MSFC/Emmett Givens
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[x-Ray images:]
Treet
Image by Stacie Joy for CTTC
X-ray vision carrot cake
crocs
Image by tsaiid
foot x-ray 實在太讚了，看到後真覺得捨不得不買啊！
[x-Ray images:]
A Torrent of Star Formation (NASA, Chandra, 01/13/11)
Image by NASA’s Marshall Space Flight Center
Editor’s note: all of these winter-themed images I’ve been posting are so beautiful, but they’ve made me feel cold! This bright image of some multi-million-degree star formation should take the chill from our bones…
A new Chandra X-ray Observatory image of Messier 82, or M82, shows the result of star formation on overdrive. M82 is located about 12 million light years from Earth and is the nearest place to us where the conditions are similar to those when the Universe was much younger with lots of stars forming.
M82 is a so-called starburst galaxy, where stars are forming at rates that are tens or even hundreds of times higher than in a normal galaxy. The burst of star birth may be caused by a close encounter or collision with another galaxy, which sends shock waves rushing through the galaxy. In the case of M82, astronomers think that a brush with its neighbor galaxy M81 millions of years ago set off this torrent of star formation.
M82 is seen nearly edge-on with its disk crossing from about 10 o’clock to about 4 o’clock in this image from Chandra (where low, medium, and high-energy X-rays are colored red, green, and blue respectively.) Among the 104 point-like X-ray sources in the image, eight so far have been observed to be very bright in X-rays and undergo clear changes in brightness over periods of weeks and years. This means they are excellent candidates to be black holes pulling material from companion stars that are much more massive than the Sun. Only a handful of such binary systems are known in the Local Group of galaxies containing the Milky Way and M31.
Chandra observations are also important in understanding the rapid rate at which supernovas explode in starburst galaxies like M82. When the shock waves travel through the galaxy, they push on giant clouds of gas and dust, which causes them to collapse and form massive stars. These stars, in turn, use up their fuel quickly and explode as supernovas. These supernovas produce expanding bubbles of multimillion-degree gas that extend for millions light years away from the galaxy’s disk. These bubbles are seen as the large red areas to the upper right and lower left of the image.
Credits: NASA/CXC/Wesleyan/R.Kilgard et al.
Read entire caption/view more images: chandra.harvard.edu/photo/2011/m82/
Caption credit: Harvard-Smithsonian Center for Astrophysics
Read more about Chandra:
www.nasa.gov/chandra
p.s. You can see all of our Chandra photos in the Chandra Group in Flickr at: www.flickr.com/groups/chandranasa/ We’d love to have you as a member!
Youngest Nearby Black Hole (NASA, Chandra, Spitzer, 11/15/10)
Image by NASA’s Marshall Space Flight Center
This composite image shows a supernova within the galaxy M100 that may contain the youngest known black hole in our cosmic neighborhood. In this image, Chandra’s X-rays are colored gold, while optical data from ESO’s Very Large Telescope are shown in red, green, and blue, and infrared data from Spitzer are red. The location of the supernova, known as SN 1979C, is labeled.
SN 1979C was first reported to be seen by an amateur astronomer in 1979. The galaxy M100 is located in the Virgo Cluster about 50 million light years from Earth. This approximately 30-year age, plus its relatively close distance, makes SN 1979C the nearest example where the birth of a black hole has been observed, if the interpretation by the scientists is correct.
Data from Chandra, as well as NASA’s Swift, the European Space Agency’s XMM-Newton and the German ROSAT observatory revealed a bright source of X-rays that has remained steady for the 12 years from 1995 to 2007 over which it has been observed. This behavior and the X-ray spectrum, or distribution of X-rays with energy, support the idea that the object in SN 1979C is a black hole being fed either by material falling back into the black hole after the supernova, or from a binary companion.
The scientists think that SN 1979C formed when a star about 20 times more massive than the Sun collapsed. It was a particular type of supernova where the exploded star had ejected some, but not all of its outer, hydrogen-rich envelope before the explosion, so it is unlikely to have been associated with a gamma-ray burst (GRB). Supernovas have sometimes been associated with GRBs, but only where the exploded star had completely lost its hydrogen envelope. Since most black holes should form when the core of a star collapses and a gamma-ray burst is not produced, this may be the first time that the common way of making a black hole has been observed.
The very young age of about 30 years for the black hole is the observed value, that is the age of the remnant as it appears in the image. Astronomers quote ages in this way because of the observational nature of their field, where their knowledge of the Universe is based almost entirely on the electromagnetic radiation received by telescopes.
Credits: X-ray: NASA/CXC/SAO/D.Patnaude et al, Optical: ESO/VLT, Infrared: NASA/JPL/Caltech
Read entire caption/view more images: chandra.harvard.edu/photo/2010/sn1979c/
Caption credit: Harvard-Smithsonian Center for Astrophysics
Read more about Chandra:
www.nasa.gov/chandra
p.s. You can see all of our Chandra photos in the Chandra Group in Flickr at: www.flickr.com/groups/chandranasa/ We’d love to have you as a member!
Someone’s Work Space
Image by mtsofan
Sometimes, it’s interesting to see someone else’s work space. These items are on the wall in the x-ray room.
