MessageToEagle.com - A new unprecedented catalogue for cosmic X-ray sources has been created by
the XMM-Newton Survey Science Centre, led by Professor
Mike Watson of the University of Leicester.
Scientists used the University's 'ALICE' supercomputer to help them produce a new X-ray catalogue, dubbed
"3XMM" - the largest catalogue of X-ray sources ever produced - represents a 50% increase over previous catalogues.
Sky distribution of the density of objects in the 3XMM catalogue, shown in Galactic coordinates. The inset
shows a zoom of the small region indicated where the individual sources can be seen. Credit: ESA/XMM-Newton/EPIC/M. Watson (University of Leicester)
It will provide a valuable resource for astronomers exploring Universe and its most extreme phenomena such
as tidal disruption events - when a black hole swallows another star, producing prodigious outbursts of X-ray emission.
"The catalogue contains more than half a million sources, all of which are provided to a better quality than
ever before," Professor Watson said.
"The catalogue provides enormous scope for new discoveries as well as in-depth studies of large samples.
XMM-Newton is pre-eminent amongst current X-ray missions in its ability to perform `survey' science, with a
chance to find previously undetected objects and then explore their properties."
The catalogue is an exceptional dataset for generating large, well-defined samples of objects such as
active galactic nuclei, clusters of galaxies, interacting compact binaries, and active stellar coronae.
Since Earth's atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources.
The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic
black holes to the origins of the Universe itself.
The sources in the 3XMM catalogue are identified and isolated from serendipitous data recorded by XMM-Newton's
EPIC X-ray cameras, built by a team also led by the University.
In each of the 600-700 observations made each year, around 70 extra sources are captured in addition to the
target object which usually only takes up a small fraction of the field of view.
As such it offers an unparalleled resource for exploring cosmic X-ray populations, in particular in studying
Active Galactic Nuclei (AGN) - those galaxies such as quasars which harbor a super-massive black hole
at their centers," Watson said.
"Such active galaxies dominate the detections in the 3XMM catalogue, meaning that 3XMM is the key to
unlocking a storehouse of several hundred thousand AGN."
Shockwaves Could Crinkle Space-Time Creating A New Kind Of Singularity
Mathematicians have discovered a new way to crinkle up the fabric of space-time, at least in theory.
"We show that space-time cannot be locally flat at a point where two shock waves collide," said Blake Temple, professor of mathematics at UC Davis.
"This is a new kind of singularity in general relativity."
Millennia Old Astronomical Secret Revealed
In 1943, an ancient papyrus was bought by the Cairo museum.
It was written in Hieratic and although portions of it were eaten away by ants, it was a very precious ancient document.
The papyrus contained three separate books dealing with astronomy. One of the books was the Cairo Calendar, and now it reveals an ancient astronomical secret.
Space-Time Crystal Computer That Can Outlive Even The Universe Itself!
It may seem strange to think something can survive even the death of the Universe, but that could actually be possible as a result of the laws of quantum physics.
Scientists are now suggesting a new blueprint for a device, known as a time crystal, that can theoretically continue to function as a
X-ray 'Echoes' Will Help Probe
A Supermassive Black Hole's Surroundings
Most big galaxies host a big central black hole containing millions of times the sun's mass. When matter streams toward one of
these supermassive black holes, the galaxy's center lights up, emitting billions of times more energy than the sun.
For years, astronomers have been monitoring such "active galactic nuclei" (AGN) to better understand what happens on the brink of a monster black hole.
Mysterious X-Rays From Jupiter Near The Poles
Although there had been prior detections of X-rays from Jupiter with other X-ray telescopes, no one expected that the sources of the
X-rays would be located so near the poles.
The X-rays are thought to be produced by energetic oxygen and sulfur ions that are trapped in Jupiter's magnetic field and crash into its atmosphere.
"The Most Profound Mystery In All Of Science" -
Little is known about this force and its its repulsive gravity, which is causing the expansion of the universe to accelerate.
The riddles of dark matter and cosmic inflation, along with dark energy, these are the three pillars of modern cosmological
theory," and none of them can be explained with physics that we know," Michael Turner, director of the Kavli Institute for Cosmological Physics says.
Bizarre Alien Planets Discovered By 'Extremely Little' Telescope
Even a small telescope can spot strange new alien worlds.
The KELT North telescope in southern Arizona is equipped with a lens that is no more powerful than a high-end digital camera, and yet,
it has just revealed the existence of two very unusual distant planets.