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Latest X-ray astronomy Stories

New Results Pave Way For Future Of X-ray Astrophysics Research
2012-12-13 17:36:02

Lee Rannals for redOrbit.com — Your Universe Online Scientists are paving the way for future X-ray astrophysics research by explaining why observations from orbiting X-ray telescopes do not match theoretical predictions. The team used powerful X-rays from the Linac Coherent Light Source (LCLS) at the U.S. Department of Energy's (DOE) SLAC National Accelerator Laboratory to study and measure a key process at work in extreme plasmas like those found in stars, black holes and...

Microquasar Found In Distant Galaxy
2012-12-12 13:35:22

Lee Rannals for redOrbit.com - Your Universe Online Astronomers have found a microquasar in a galaxy far away for the first time, according to a report in the journal Nature. The discovery of the microquasar gives hope that more objects may be found in nearby galaxies, which could give astronomers the opportunity to study them in detail, unraveling some of their mysteries. In a microquasar, a black hole with a mass several times that of the Sun pulls material from its companion star...

X-ray Emissions A Tell-tale Sign Of Supernova Birth
2012-12-08 06:44:04

April Flowers for redOrbit.com - Your Universe Online A new study led by the University of Leicester has revealed new evidence suggesting X-ray detectors in space could be the first to witness new supernovae that signal the death of massive stars. An excess of X-ray radiation has been observed in the first few minutes of the collapse of massive stars. This excess may be the signature of the supernovae shock wave as it first escapes from the star. Dr. Rhaana Starling of the University...

Chandra Eyes Most Distant X-ray Jet Ever Observed
2012-11-29 10:00:20

April Flowers for redOrbit.com - Your Universe Online NASA's Chandra X-ray Observatory has detected a jet of X-rays from a supermassive black hole 12.4 billion light years from Earth, making it the most distant X-ray jet ever observed. The jet gives astronomers a glimpse into the explosive activity associated with super massive black hole growth in the early universe. A quasar named GB 1428+4217, or GB 1428 for short, produced the jet of X-rays. The black holes at the center of most...

Thanksgiving Dinner At The Center Of The Galaxy
2012-11-22 10:33:45

[ Watch the Video: The Diner at the Center of the Galaxy ] Lee Rannals for redOrbit.com - Your Universe Online NASA's NuSTAR spacecraft has detected the Milky Way's central black hole eating a Thanksgiving snack. Supermassive black holes like the one in the middle of our galaxy sustain themselves by swallowing stars, planets, asteroids, comets and clouds of gas that wander around the galaxy. The space agency's new spacecraft allowed it to take an observation of the black hole...

Chandra X-Ray Observatory Images Star-Making Cluster Cygnus OB2
2012-11-08 09:57:12

Lawrence LeBlond for redOrbit.com - Your Universe Online NASA has released a new image of the Cygnus OB2 star cluster, detailing its structure and evolution. The Milky Way, as well as other galaxies in the universe, are home to numerous young star clusters with hundreds of thousands of hot, massive, young stars known as O and B stars. Cygnus OB2 is one of these clusters that contains no less than 60 O-type stars and upwards of a thousand B-type stars. Using the Chandra X-Ray...

Bright Flare In A Black Hole
2012-11-06 19:14:34

Lee Rannals for redOrbit.com — Your Universe Online A team of scientists say they have detected the brightest flare ever observed in our galaxy's black hole. The astronomers used NASA´s Chandra X-Ray Observatory to detect the brightest flare ever observed from Sagittarius A*. The black hole is considered to be low-key, emitting very little energy for its size. It gives off about as much energy as the sun, despite it being 4 billion times as massive. The recent flare is...

NuSTAR Picks Up First Black Hole X-ray Flare Up
2012-10-24 10:43:45

Lee Rannals for redOrbit.com — Your Universe Online NASA's Nuclear Spectroscopic Telescope Array (NuSTAR) has spotted its first flare from Milky Way's black hole. The new telescope, launched June 13, is the only telescope capable of producing focused images of the highest-energy X-rays, and NASA said it has caught its first look at the black hole. "We got lucky to have captured an outburst from the black hole during our observing campaign," Fiona Harrison, the mission's...

Milky Way Black Hole Ready For A Snack
2012-10-23 04:05:24

Lee Rannals for redOrbit.com - Your Universe Online Scientists have determined that the black hole in the middle of the Milky Way is getting ready to devour an approaching cloud of dust and gas. The researchers used a supercomputer simulation to determine that the cloud, known as G2, could possibly survive the encounter with the black hole, but its surviving mass would be torn apart and shaped differently. They came up with six simulations using Cosmos++ computer code, requiring more...


Latest X-ray astronomy Reference Libraries

sts-35
2012-03-24 09:55:41

Columbia launched from Kennedy Space Center on December 2, 1990 at 1:49 AM EST and landed at Edwards AFB on December 10 at 9:54 PM PST. The shuttle orbited 144 times at an altitude of 190 nautical miles at an inclination of 28.45 degrees and travelled 3.7 million miles. The mission lasted 8 days, 23 hours, 5 minutes, and 8 seconds. The primary objectives were round-the-clock observations of the celestial sphere in ultraviolet and x-ray astronomy with the ASTRO-1 observatory consisting of...

45_b90d45a4e7d89d873d39705549e516ce
2014-01-12 00:00:00

Sample Entry: Astronomy is the scientific study of stars, planets, comets, galaxies, and other phenomena that occur outside Earth's atmosphere (e.g. cosmic radiation). Astronomy deals with the evolution, physics, chemical makeup, meteorology, and motion of celestial objects, and also the formation of the universe. The word Astronomy comes from the Greek words astron (meaning "star") and nomos (meaning "law"). Astronomy is one of the oldest sciences. Since the dawn of man, people always...

7_d6897d09acee1dd0c34d0fbf62ff7d0b2
2004-10-19 04:45:44

X-Ray Astronomy -- Although the more energetic X-rays (E > 30 keV) can penetrate the air at least for distances of a few meters (they would never have been detected and medical X-ray machines would not work if this was not the case) the Earth's atmosphere is thick enough that virtually none are able to penetrate from outer space all the way to the Earth's surface. X-rays in the 0.5 - 5 keV range, where most celestial sources give off the bulk of their energy, can be stopped by a few...

6_f90ed86f2fe38a60d6f89c02ad7d21082
2004-10-19 04:45:43

X-ray Pulsar -- This dramatic artist's vision shows a city-sized neutron star centered in a disk of hot plasma drawn from its enfeebled red companion star. Ravenously accreting material from the disk, the neutron star spins faster and faster emitting powerful particle beams and pulses of X-rays as it rotates 400 times a second. Could such a bizarre and inhospitable star system really exist in our Universe? Based on data from the orbiting Rossi X-Ray Timing Explorer (RXTE) satellite,...

6_f5324ad7d5514381282c99963af8be7c2
2004-10-19 04:45:41

Gamma-Ray Burst -- In astronomy, Gamma-ray bursters (GRBs) are flashes of gamma rays that last from seconds to hours, the longer ones being followed by several days of X-ray afterglow. They occur at random positions in the sky several times each day. They are now believed to result from tremendous explosions in far away galaxies, during the creation of a black hole from a dying star or two colliding neutron stars. The black hole, surrounded by a rotating disk of matter falling into it,...

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Word of the Day
call-note
  • The call or cry of a bird or other animal to its mate or its young.
'Call-note' is newer than 'bird-call,' which originally referred to 'an instrument for imitating the note of birds' but now also refers to 'the song or cry of a bird.'
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