... nebula as calibration source · Good calibration sources should obey: 1) Simple continuum 2) Known continuum 3) Constant in time 4) Point source 5) No dust scattering halo Crab only obeys rule 1 and 3 partially, but except for White dwarf spectra there is ...
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Ссылки http://xmm.vilspa.esa.es/external/xmm_sw_cal/icwg/presentations/crab_kaastra.pdf -- 242.0 Кб -- 19.06.2006 Похожие документы
... SPI Crab Nebula observations THE CRAB NEBULA 20-50 keV 567 ks Crab Nebula Stability in the FOV Rev 300 10° circle around the axis Crab Nebula - Calibration stability revolutions 300 and 45 Crab Nebula observations Whole camera peak positions in keV and ...
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Ссылки http://xmm.vilspa.esa.es/external/xmm_sw_cal/icwg/presentations/INTEGRAL_SPI.pdf -- 1702.4 Кб -- 19.06.2006 Похожие документы
... the results of a specific calibration experiment performed on the Crab Nebula (cf ... Two subsequent observations of the Crab Nebula were performed in September 2011 to ...
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Ссылки http://xmm.vilspa.esa.es/docs/documents/CAL-SRN-0302-1-5.pdf -- 319.7 Кб -- 25.10.2013 Похожие документы
... a optimal phase and space resolved spectroscopy of the Crab pulsar and nebula ... object, the so-called Crab pulsar, and a region of nebulosity, the Crab nebula ... spatial and a high quality phase resolved spectroscopy of the Crab nebula and pulsar ...
... A final comparison with the Crab nebula allowed final adjustments for powerlaw slope and overall normalisation. ... the RGS fluxed spectra of the neutron star RXJ18563754 and the Vela Pulsar Wind Nebula, both of which are e#ectively constant ...
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Ссылки http://xmm.vilspa.esa.es/docs/documents/CAL-SRN-0238-1-0.ps.gz -- 118.6 Кб -- 19.09.2007 Похожие документы
... We were able to distinguish four typical regions as (a) background (Cols. 1-13 and 55-64) (b) outer nebula (Cols. 14-22 and 47-54) (c) inner nebula (Cols. 23-33 and 41-46), and (d) pulsar (Cols. ...
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Ссылки http://xmm.vilspa.esa.es/docs/documents/CAL-TN-0069-1-0.pdf -- 913.2 Кб -- 04.07.2006 Похожие документы
... however, is independent of the Crab nebula, because this object has not been used to ... days of X-ray astronomy the Crab nebula has been used as a calibration target for ...
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Ссылки http://xmm.vilspa.esa.es/docs/documents/CAL-TN-0061-1-0.pdf -- 1023.2 Кб -- 10.11.2005 Похожие документы
... Existing calibration data based on a recent (September 2011) observation of the Crab Nebula are consistent with this assumption, at least for EPIC-pn Timing Mo de. ...
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Ссылки http://xmm.vilspa.esa.es/docs/documents/CAL-SRN-0281-1-0.pdf -- 68.1 Кб -- 31.05.2012 Похожие документы