Alexander Y. Potekhin

Model X-ray Spectra of Magnetic Neutron Stars with Hydrogen Atmospheres (2008)

Ho, Wynn C. G., Potekhin, Alexander Y., Chabrier, Gilles

We construct partially ionized hydrogen atmosphere models for magnetized neutron stars in radiative equilibrium with fixed surface fields between B=10^12 and 2x10^13 G and effective temperatures...

Neutron Star Envelopes And Thermal Radiation From The Magnetic Surface (2007)

Joseph Ventura, ALEXANDER Y. POTEKHIN

. The thermal structure of neutron star envelopes is discussed with emphasis on analytic results. Recent progress on the eect of chemical constitution and high magnetic elds on the opacities and the...

Hydrogen Atoms In Neutron Star Atmospheres: Analytical Approximations For Binding Energies (2007)

Ed. P. Schmelcher, W. Schweizer, Alexander Y. Potekhin

INTRODUCTION Since the first observations of neutron stars thirty years ago, they have affected many branches of physics. These extremely compact stars serve as natural physical laboratories for...

Equation Of State And Opacities For Hydrogen Atmospheres Of (2007)

Neutron Stars With, Alexander Y. Potekhin, Gilles Chabrier

We present an equation of state and radiative opacities for a strongly magnetized hydrogen plasma at magnetic fields B, temperatures T, and densities # typical for atmospheres of isolated neutron...

Radiative transitions of the helium atom in highly magnetized neutron star atmospheres (2007)

Medin, Zach, Lai, Dong, Potekhin, Alexander Y.

Recent observations of thermally emitting isolated neutron stars revealed spectral features that could be interpreted as radiative transitions of He in a magnetized neutron star atmosphere. We...

Magnetic Hydrogen Atmosphere Models and the Neutron Star RX J1856.5-3754 (2006)

Ho, Wynn C. G., Kaplan, David L., Chang, Philip, Van Adelsberg, Matthew, Potekhin, Alexander Y.

RX J1856.5-3754 is one of the brightest nearby isolated neutron stars, and considerable observational resources have been devoted to it. However, current models are unable to satisfactorily explain...

Radiation from condensed surface of magnetic neutron stars (2004)

Van Adelsberg, Matthew, Lai, Dong, Potekhin, Alexander Y., Arras, Phil

Recent observations show that the thermal X-ray spectra of many isolated neutron stars are featureless and in some cases (e.g., RX J1856.5-3754) well fit by a blackbody. Such a perfect blackbody...

Atmospheres and Spectra of Strongly Magnetized Neutron Stars -- III. Partially Ionized Hydrogen Models (2003)

Ho, Wynn C. G., Lai, Dong, Potekhin, Alexander Y., Chabrier, Gilles

We construct partially ionized hydrogen atmosphere models for magnetized neutron stars in radiative equilibrium with surface fields B=10^12-5 \times 10^14 G and effective temperatures T_eff \sim a...

Thermal Structure and Cooling of Superfluid Neutron Stars with Accreted Magnetized Envelopes (2003)

Alexander Y. Potekhin, Dmitry G. Yakovlev, Gilles Chabrier, Oleg Y. Gnedin

We study the thermal structure of neutron stars with magnetized envelopes composed of accreted material, using updated thermal conductivities of plasmas in quantizing magnetic fields, as well as the...

Atmospheres of Magnetized Neutron Stars: Vacuum Polarization and Partially Ionized Models (2002)

Ho, Wynn C. G., Lai, Dong, Potekhin, Alexander Y., Chabrier, Gilles

We construct hydrogen atmosphere models for magnetized neutron stars in radiative equilibrium with surface fields B=10^12-5x10^14 G and effective temperatures T_eff a few x 10^5-10^6 K by solving the...

Thermal Relaxation in Young Neutron Stars (2000)

Gnedin, Oleg Y., Yakovlev, Dmitry G., Potekhin, Alexander Y.

The internal properties of the neutron star crust can be probed by observing the epoch of thermal relaxation. After the supernova explosion, powerful neutrino emission quickly cools the stellar core,...