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Animation of XMM-Newton 's trajectory around Earth. XMM-Newton, also known as the High Throughput X-ray Spectroscopy Mission and the X-ray Multi-Mirror Mission, is an X-ray space observatory launched by the European Space Agency in December 1999 on an Ariane 5 rocket. It is the second cornerstone mission of ESA's Horizon 2000 programme.
The XMM Cluster Survey (XCS) is a serendipitous X-ray galaxy cluster survey being conducted using archival data taken by ESA’s XMM-Newton satellite. Galaxy clusters trace the large scale structure of the universe, and their number density evolution with redshift provides a way to measure cosmological parameters, independent of cosmic microwave background experiments or supernovae cosmology ...
2XMM J083026+524133 (2XMM J0830) is a very large galaxy cluster that lies 7.7 billion light-years away. It was discovered by chance by ESA's XMM Newton and the Large Binocular Telescope (LBT) in Arizona in 2008 while it was looking at the quasar APM 08279+5255.
The instrument consisted of four detectors based on spectroscopic MWPCs, making an effective area of 2,400 cm 2 at 10 keV and 800 cm 2 at 100 keV. The time resolution was 200 microseconds. [25] The X-ray spectrometer aboard ISEE-3 was designed to study both solar flares and cosmic gamma-ray bursts over the energy range 5-228 keV. The experiment ...
GRB 221009A was subsequently observed by the Neutron Star Interior Composition Explorer (NICER), [14] the Monitor of All-sky X-ray Image (MAXI), the Imaging X-ray Polarimetry Explorer (IXPE), [30] [31] [8] the International Gamma-ray Astrophysics Laboratory (INTEGRAL), the XMM-Newton space telescope, [32] the Large High Altitude Air Shower ...
This list of space telescopes (astronomical space observatories) is grouped by major frequency ranges: gamma ray, x-ray, ultraviolet, visible, infrared, microwave, and radio.
WASHINGTON (Reuters) -U.S. immigration agents rounded up undocumented migrants as well as American citizens in a raid of a Newark, New Jersey, worksite on Thursday that the city's mayor said ...
The effective area of an antenna or aperture is based upon a receiving antenna. However, due to reciprocity , an antenna's directivity in receiving and transmitting are identical, so the power transmitted by an antenna in different directions (the radiation pattern ) is also proportional to the effective area A e {\displaystyle A_{e}} .