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Spectroscopy of Low Mass X-Ray Binaries: New Insights into AccretionThis project is to observe two low mass X-ray binaries, chosen for their X-ray brightness, low column density, and diversity of accretion behavior. The high spectral resolution of the RGS, the broad energy range and tremendous collecting power of EPIC, and simultaneous optical monitoring with the OM are particularly well-suited to these studies. The second of two objects was not observed until September of 2002. Data analysis for the new observation is underway. over the next year we will: investigate the physical conditions of the emitting gas using emission and recombination line diagnostics to determine temperatures, densities, elemental abundances, and ionization structure; study the behavior of emission features as a function of binary orbit; and test and improve models of X-ray line emission developed by us over the past decade. We will gain insight on both the geometry of the accretion flow and on the evolutionary history of LMXBs.
Document ID
20020086723
Acquisition Source
Goddard Space Flight Center
Document Type
Contractor or Grantee Report
Authors
Vrtilek, Saeqa Dil
(Smithsonian Astrophysical Observatory Cambridge, MA United States)
Mushotzky, Richard F.
Date Acquired
August 20, 2013
Publication Date
October 1, 2002
Subject Category
Astronomy
Funding Number(s)
CONTRACT_GRANT: NAG5-10070
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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