TY - JOUR
T1 - Mass-to-radius ratio for the millisecond pulsar J0437-4715
AU - Pavlov, G. G.
AU - Zavlin, V. E.
N1 - Funding Information:
We thank Werner Becker for providing us with the ROSAT PSPC light curve. We are grateful to Joachim Trümper for stimulating discussions. The work was partially supported through NASA grant NAG5-2807, INTAS grant 94-3834, and DFG-RBRF grant 96-02-00177G. V. E. Z. acknowledges a Max-Planck fellowship.
PY - 1997
Y1 - 1997
N2 - Properties of X-ray radiation emitted from the polar caps of a radio pulsar depend not only on the cap temperature, size, and position, but also on the surface chemical composition, magnetic field, and neutron star's mass and radius. Fitting the spectra and the light curves with neutron star atmosphere models enables one to infer these parameters. As an example, we present here results obtained from the analysis of the pulsed X-ray radiation of a nearby millisecond pulsar, J0437-4715. In particular, we show that stringent constraints on the mass-to-radius ratio can be obtained if orientations of the magnetic and rotation axes are known, e.g., from the radio polarization data.
AB - Properties of X-ray radiation emitted from the polar caps of a radio pulsar depend not only on the cap temperature, size, and position, but also on the surface chemical composition, magnetic field, and neutron star's mass and radius. Fitting the spectra and the light curves with neutron star atmosphere models enables one to infer these parameters. As an example, we present here results obtained from the analysis of the pulsed X-ray radiation of a nearby millisecond pulsar, J0437-4715. In particular, we show that stringent constraints on the mass-to-radius ratio can be obtained if orientations of the magnetic and rotation axes are known, e.g., from the radio polarization data.
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U2 - 10.1086/311007
DO - 10.1086/311007
M3 - Article
AN - SCOPUS:0040580765
SN - 0004-637X
VL - 490
SP - L91-L94
JO - Astrophysical Journal
JF - Astrophysical Journal
IS - 1 PART II
ER -