XMM-Newton at 565 962
It provided the latest update of the catalog thanks to the data collected by the space telescope XMM-Newton European Space Agency. The result of the analysis of about 7,500 observations of XMM-Newton satellite, is the richest atlas of the sky in X-rays ever obtained from a single mission.
There are 565 962 X-ray sources in the latest version, the fifth, of the catalog thanks to the data collected by the space telescope XMM-Newton European Space Agency. The result of the analysis of about 7,500 observations of XMM-Newton satellite, this catalog is the richest atlas of the sky in X-rays ever obtained from a single mission .The catalog contains a variety of sources ranging from nearby objects, even in our system Solar, to the more massive black holes at the borders (maybe?) of the Universe.
3XMM-DR5 – the acronym of the catalog – is the result of an incessant activity of observation of XMM-Newton, processing and analysis of data by the “XMM-Newton Survey Science Centre” that proceeds in an almost uninterrupted for over 15 years. In each pointing the telescope detects between 50 and 100 X-ray sources in a portion of the sky in the same apparent size of the full moon and every year are completed about 600 observations at different points of the sky.
The variety of sources, including the most energy in the Universe, is surprising: the catalog are part supermassive holes blacks – nestled in the center of galaxies – that devour huge amounts of gas and dust, clusters of galaxies, residues of stellar explosions, ie objects diameter of a few kilometers compounds of extremely dense matter and that rotate fast around its own axis, also performing thousand revolutions per second.
“Many of the items in the catalog have never been observed before and will represent a formidable tool for investigations and irreplaceable astrophysical and cosmological years to come,” says Roberto Della Czech, who along with colleagues Valentina Braito, Alessandro Caccianiga,, Thomas Maccacaro and Paola Severgnini contributed to activities related to “XMM-Newton Survey Science Centre” of responsibility INAF-Osservatorio Astronomico di Brera. “In addition, hidden between 560,000 and more sources of the catalog, there may be even more exotic celestial objects or entirely new, waiting to be discovered. ”
Just what happened during the validation data for the release of 3XMM-DR5, were discovered when two binary systems really bizarre, astronomers call ‘polar’. These unusual celestial pairs consist of a Sun-like star and a white dwarf star, whose matter is well a million times more dense than water. The intense gravitational pull exerted by the white dwarf pulls the outer layers of gas of the companion. This material captured by the white dwarf star interacts with its intense magnetic field (ten million times greater than that of the Earth) warms and emitting electromagnetic radiation, mostly just in the form of X-rays when the material that is deposited on the white dwarf is so high that the star can no longer support the weight, collapses, thus triggering a titanic explosion: a supernova of type I. Even Natalie Webb IRAP (Institut de Recherche en Astrophysique et Planétologie) in Toulouse in France, responsible for XMM-Newton Survey Science Centre, where she was making a catalog, points out that the amount of data present in 3XMM-DR5 can give many surprises to scientists: “This is just the tip of the iceberg. There are many new interesting things to discover in the catalog. “