Physics – Optics
Scientific paper
Sep 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985esasp.239..283s&link_type=abstract
In ESA Proceedings of ESA Workshop on a Cosmic X-Ray Spectroscopy Mission p 283-286 (SEE N86-22461 12-89)
Physics
Optics
Cosmic X Rays, Crystal Optics, Spectrometers, X Ray Astronomy, X Ray Sources, Bragg Angle, Field Of View, Spectral Resolution
Scientific paper
Results from HEAO-2 and EXOSAT demonstrate the need for a high resolution imaging spectrometer capable of studying sources with appreciable angular extent (up to 1 to 2 deg). Instruments which utilize curved Bragg crystals following the telescope as proposed for XMM and AXAF do not possess a sufficiently large field of view (FOV) and their off-axis resolution deteriorates rapidly. They also produce overlapping spectral images of extended sources. The instrument of choice for diffuse sources has a flat Bragg crystal located ahead of the telescope. As an example of its performance, a source emitting OVII with surface brightness = 100 photons/sqcm/sec/ster is detected in 7.8x7.8 arcmin pixels over a 2 deg radius FOV. A total observation of 300,000 sec maps the source in each of the three OVII helium-like emission lines with a spectral resolution 600.
Byrnak B.
Schnopper Herbert W.
No associations
LandOfFree
Objective crystal spectrometer (OXS) for imaging extended cosmic X-ray sources does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Objective crystal spectrometer (OXS) for imaging extended cosmic X-ray sources, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Objective crystal spectrometer (OXS) for imaging extended cosmic X-ray sources will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-800972