Statistics – Applications
Scientific paper
Dec 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...199.2708s&link_type=abstract
American Astronomical Society, 199th AAS Meeting, #27.08; Bulletin of the American Astronomical Society, Vol. 33, p.1351
Statistics
Applications
Scientific paper
We present the neutron star masses, radii, and effective temperatures from our most recent applications of the ATM neutron star atmosphere code (Joss, Madej, & Stage, 2001, Neutron Stars in Supernova Remnants, in press) to Chandra ACIS and LETG/HRC-S observations of the spectra of thermally emitting neutron stars, including the recent archival observation of thermal neutron star RXJ185635-3754. The ATM code uses a virtually exact quantum electrodynamical treatment of incoherent Compton scattering to generate model spectra for given composition, surface gravity and temperature. Observed spectra are then fit to a multidimensional grid of model spectra parameterized by the neutron star's effective temperature, radii, mass, and surface composition. As our emphasis is on the physical interpretation of the derived parameters, we will discuss the significance of our self-consistent fit-determined radii, masses, and redshifts on the present theoretical understanding of these objects. We will also present our new iron models calculated with ATM, and discuss recent improvements to the model code.
Joss Paul C.
Madej Jurek
Stage Michael D.
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