[22], One of NuSTAR's main goals is to characterize stars' explosions by mapping the radioactive material in a supernova remnant. NuSTAR has captured these first, focused views of the supermassive black hole at the heart of our galaxy in high-energy X-ray light. NuSTAR (Nuclear Spectroscopic Telescope Array) adalah teleskop ruang berbasis X-ray yang menggunakan teleskop Wolter untuk memfokuskan energi tinggi sinar-X dari sumber astrofisika, khususnya untuk spektroskopi nuklir, dan beroperasi di kisaran 5-80 keV. [1], NuSTAR is searching for black holes. For this two conical approximation Wolter telescope design optics with 10.15 metres (Template:Convert/round ft) focal length are held at the end of a long deployable mast. In response, NuSTAR was submitted to NASA in May, as one of 36 mission proposals vying to be the tenth and eleventh Small Explorer missions. Nuclear Spectroscopic Telescope Array (NuSTAR) on NASAn röntgenteleskooppi. Each focusing optic consists of 133 concentric shells. In November, NASA selected NuSTAR and four other proposals for a five-month implementation feasibility study. [1] One of the first discoveries made by NuSTAR, along with another space telescope called XMM-Newton, was to measure the spin rate of a supermassive black hole for the first time. Such events are the primary background for NuSTAR and must be properly identified and subtracted in order to identify high energy photons from cosmic sources. Each detector is a rectangular crystal of dimension 20mm x 20mm and thickness ~2mm that have been gridded into 32 × 32, 0.6 mm pixels (each pixel subtending 12.3 arc seconds) and provides a total of 12 arc minute field of view for each focal plane module. Viisi sekuntia vapaasta pudotuksesta Pegasuksen kolmivaiheinen rakettimoottori käynnistyi kuljettaakseen NuSTARin kiertoradalle. The focal planes are shielded by Cesium-Iodide (CsI) crystals that surround the detector housings. The event location, energy, and depth of interaction in the detector are computed from the nine-pixel signals.[20][21]. ini adalah misi kesebelas dari program satelit NASA Explorer Kecil (SMEX-11) dan yang pertama langsung pencitraan teleskop sinar … There are 4680 mirror segments in total (the 65 inner shells each comprise six segments and the 65 outer shells twelve; there are upper and lower segments to each shell, and there are two telescopes); there are five spacers per segment. The latest findings strongly suggest the exploding star literally sloshed around, re-energizing the stalled shock wave and allowing the star to finally blast off its outer layers.[23]. [6] The program was cancelled in February 2006 as a result of cuts to science in NASA's 2007 budget. It is also looking at supernovae to help understand how the chemical elements are created. Clavin, Whitney & Perrotto, Trent J. Each pixel has an independent discriminator and individual X-ray interactions trigger the readout process. NASA contracted with Orbital Sciences Corporation to launch NuSTAR (mass 772 pounds (Template:Convert/round kg))[10] on a Pegasus XL rocket for 21 March 2012. NuSTAR mittaa taivaan röntgenlähteitä kahden vuoden ajan. Se tekee kartoituksen mustista aukoista, joiden massa on miljardi kertaa suurempi kuin Auringon massa. The expected point spread function for the flight mirrors is 43 arc-seconds, giving a spot size of about two millimeters at the focal plane; this is unprecedentedly good resolution for focusing hard-X-ray optics, though it is about one hundred times worse than the best resolution achieved at longer wavelengths by Chandra. The electrons are digitally recorded using custom Application Specific Integrated Circuits (ASICs) designed by the NuSTAR Caltech Focal Plane Team. Spin measurement of a supermassive black hole, Tracing radioactivity in a supernova remnant. Sen energia-alue on 5 - 80 keV. Nuclear Spectroscopic Telescope Array (NuSTAR) on NASAn röntgenteleskooppi. Nuclear Spectroscopic Telescope Array (NuSTAR) — касмічная абсерваторыя НАСА ў праграме малых касмічных спадарожнікаў (SMEX). In January 2005, NASA selected NuSTAR for flight pending a one-year feasibility study. Projektia johtaa Fiona Harrison (California Institute of Technology eli Caltech) päätutkijana. A laser metrology system is used to determine the exact relative positions of the optics and the focal plane at all times, so that each detected photon can be mapped back to the correct point on the sky even if the optics and the focal plane move relative to one another during an exposure. It uses special optical devices to do this, so it works differently from a normal telescope. Teleskooppi laukaistiin 550 kilometriä korkealle kiertoradalleen 13. kesäkuuta 2012 kello 19.00 Suomen aikaa Pegasus XL-kantoraketilla Kwajaleinin atolleilta. The optics were produced, at Goddard Space Flight Center, by heating thin (210 µm) sheets of flexible glass in an oven so that they slump over precision-polished cylindrical quartz mandrels of the appropriate radius. It is the eleventh satellite in the "Small Explorer" program. A Nuclear Spectroscopic Telescope Array (angolul Nukleáris spektroszkóp-távcső rács, rövidítve NuSTAR) csillagászati műhold, a NASA Small Explorer Programjának 11. tagja. The crystal shields, grown by Saint-Gobain, register high energy photons and cosmic rays which cross the focal plane from directions other than the along the NuSTAR optical axis. [5] The principal investigator is Fiona A. Harrison of the California Institute of Technology (Caltech). : The Nuclear Spectroscopic Telescope Array (NuSTAR). Sen energia-alue on suurempi kuin NASAn Chandra-avaruusteleskoopin ja ESAn XMM-Newtonin. It was successfully launched on 13 June 2012, having previously been delayed from 21 March due to software issues with the launch vehicle.[2][3]. Its primary scientific goals are to conduct a deep survey for black holes a billion times more massive than the Sun, to investigate how particles are accelerated to very high energy in active galaxies, and to understand how the elements are created in the explosions of massive stars by imaging the remains, which are called supernova remnants. Each focusing optic has its own focal plane module, consisting of a solid state Cadmium Zinc Telluride ( CdZnTe) pixel detector [19] surrounded by a CsI anti-coincidence shield. Take your favorite fandoms with you and never miss a beat. NuSTAR's predecessor, the High Energy Focusing Telescope (HEFT), was a balloon-borne version that carried telescopes and detectors constructed using similar technologies.
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