2XMM J083026 524133
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2XMM J083026 524133
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. As of 2008, it was the largest known galaxy cluster at red shift z ≧ 1, weighing in at an estimated 1015 solar masses. However, galaxy cluster XMMXCS 2215-1738 is several billion light years farther away.''Massive galaxy cluster found 10 billion light years away''
June 6th, 2006, Space & Earth magazine


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XMM-Newton
''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. Named after physicist and astronomer Sir Isaac Newton, the spacecraft is tasked with investigating interstellar X-ray sources, performing narrow- and broad-range spectroscopy, and performing the first simultaneous imaging of objects in both X-ray and optical ( visible and ultraviolet) wavelengths. Initially funded for two years, with a ten-year design life, the spacecraft remains in good health and has received repeated mission extensions, most recently in March 2023 and is scheduled to operate until the end of 2026. ESA plans to succeed ''XMM-Newton'' with the Advanced Telescope for High Energy Astrophysics (ATHENA), the second large mission in the Cosmic Vision 2015–2025 plan, to be launc ...
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Streaming SIMD Extensions
In computing, Streaming SIMD Extensions (SSE) is a single instruction, multiple data ( SIMD) instruction set extension to the x86 architecture, designed by Intel and introduced in 1999 in its Pentium III series of central processing units (CPUs) shortly after the appearance of Advanced Micro Devices (AMD's) 3DNow!. SSE contains 70 new instructions (65 unique mnemonics using 70 encodings), most of which work on single precision floating-point data. SIMD instructions can greatly increase performance when exactly the same operations are to be performed on multiple data objects. Typical applications are digital signal processing and graphics processing. Intel's first IA-32 SIMD effort was the MMX instruction set. MMX had two main problems: it re-used existing x87 floating-point registers making the CPUs unable to work on both floating-point and SIMD data at the same time, and it only worked on integers. SSE floating-point instructions operate on a new independent register s ...
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Extended Memory Specification
In DOS memory management, extended memory refers to memory above the first megabyte (220 bytes) of address space in an IBM PC or compatible with an 80286 or later processor. The term is mainly used under the DOS and Windows operating systems. DOS programs, running in real mode or virtual x86 mode, cannot directly access this memory, but are able to do so through an application programming interface (API) called the '' Extended Memory Specification'' (XMS). This API is implemented by a driver (such as HIMEM.SYS) or the operating system kernel, which takes care of memory management and copying memory between conventional and extended memory, by temporarily switching the processor into protected mode. In this context, the term "extended memory" may refer to either the whole of the extended memory or only the portion available through this API. Extended memory can also be accessed directly by DOS programs running in protected mode using VCPI or DPMI, two (different and i ...
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XM2 (other)
XM2 may refer to: * XM-2 Roll, a satellite for XM satellite radio * XMX (XM) (aka ''XM2''), a satellite radio channel for XM satellite radio * Canon ''XM2'', a camcorder * Citroën XM 2.0, a French automobile * South African type XM2 tender, a steam locomotive tender * Moller XM-2, a VTOL aircraft; see List of aircraft (Mo) * XM2, a prototype version of the Bradley Fighting Vehicle The Bradley Fighting Vehicle (BFV) is an American continuous track, tracked armored fighting vehicle of the United States developed by FMC Corporation and now manufactured by BAE Systems Land & Armaments, formerly United Defense. It is named for ... * XM-2, a U.S. Army Vietnam War era sensor * XM-2, a U.S. X-ray microscope for soft X-ray microscopy, the first such for biological samples * '' XMII'' (aka ''XM 2''), 2005 album by ''Porcupine Tree'' See also * RTÉ ''2XM'', Irish radio station * XM2go, a portable XM satellite radio receiver * * XM (other) * XMM (other) * ...
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