Thermal emission from low-field neutron stars

Details Thermal emission from low-field neutron stars Thermal emission from low-field neutron stars

2001-10-05

arxiv.org/abs/astro-ph/0110130v2

2002, A&A 386, 1001

Astronomy and Astrophysics

Astrophysics

8 pages A&A(5)-Latex, 6 Figures, A&A in press. The model spectra presented here are available as XSPEC tables at http://www.

Scientific paper

10.1051/0004-6361:20020332

We present a new grid of LTE model atmospheres for weakly magnetic (B<=10e10G) neutron stars, using opacity and equation of state data from the OPAL project and employing a fully frequency- and angle-dependent radiation transfer. We discuss the differences from earlier models, including a comparison with a detailed NLTE calculation. We suggest heating of the outer layers of the neutron star atmosphere as an explanation for the featureless X-ray spectra of RX J1856.5-3754 and RX J0720.4-3125 recently observed with Chandra and XMM.

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