Zobrazeno 1 - 10
of 116
pro vyhledávání: '"Alexander Y. Potekhin"'
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 501:4998-5011
We analyze new XMM-Newton and archival Chandra observations of the middle-aged $\gamma$-ray radio-quiet pulsar J1957+5033. We detect, for the first time, X-ray pulsations with the pulsar spin period of the point-like source coinciding by position wit
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 500:4491-4505
We study heat diffusion after an energy release in a deep spherical layer of the outer neutron star crust (10^7 < ��< 4 x 10^{11} g/cm^3). We demonstrate that this layer possesses specific heat-accumulating properties, absorbing heat and directin
Publikováno v:
Proceedings of the International Astronomical Union. 16:276-279
Anomalous X-ray pulsars (AXPs) and Soft gamma repeaters (SGRs) form together a single class of astrophysical sources, commonly associated to magnetars. New-generation X-ray polarimeters will play a key role in assessing the nature of these sources by
Electron conduction opacities are one of the main physics inputs for the calculation of low- and intermediate-mass stellar models, and a critical question is how to bridge calculations for moderate and strong degeneracy, which are necessarily perform
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d39f3e3d393fa07bc7c5686a3e2e712b
http://arxiv.org/abs/2108.11653
http://arxiv.org/abs/2108.11653
Stellar evolution and numerical hydrodynamics simulations depend critically on access to fast, accurate, thermodynamically consistent equations of state. We present Skye, a new equation of state for fully-ionized matter. Skye includes the effects of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1400998e6ef2cfc57c6be48af9b8524a
http://arxiv.org/abs/2104.00691
http://arxiv.org/abs/2104.00691
Publikováno v:
Proceedings of the International Astronomical Union. 16:347-349
We study the long-term heating due to magnetic field decay in the core of neutron star. Two cases for the nucleonic core are considered: normal and strongly superconducting. We give simple scaling relations (depending on the internal stellar temperat
Autor:
M. E. Ramos-Ceja, Adriana M. Pires, Georg Lamer, Valery F. Suleimanov, Andrea Santangelo, Alexander Y. Potekhin, Frank Haberl, Axel Schwope, Chandreyee Maitra, I. Traulsen, Werner Becker, Michael Freyberg, Konrad Dennerl, J. Kurpas, Victor Doroshenko, Klaus Werner
(abridged version) We present a detailed spectroscopic and timing analysis of X-ray observations of the bright radio-to-gamma-ray emitting pulsar PSR B0656+14, which were obtained simultaneously with eROSITA and XMM-Newton during the Calibration and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f2016752570d56ed888d4d88bae8aa0d
Near the surface of any neutron star there is a thin heat blanketing envelope that produces substantial thermal insulation of warm neutron star interiors and that relates the internal temperature of the star to its effective surface temperature. Phys
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::060f9b9ce605e6180efd6f35963243b8
Autor:
A. A. Kozhberov, Alexander Y. Potekhin
Outer crusts of neutron stars and interiors of cool white dwarfs consist of bare atomic nuclei, arranged in a crystal lattice and immersed in a Fermi gas of degenerate electrons. We study electrostatic properties of such Coulomb crystals, taking into
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7ff9fff930242dba75b7427f1f022513
Autor:
Gilles Chabrier, Alexander Y. Potekhin
Publikováno v:
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2021, 645, pp.A102. ⟨10.1051/0004-6361/202039006⟩
Astronomy and Astrophysics-A&A, 2021, 645, pp.A102. ⟨10.1051/0004-6361/202039006⟩
Astronomy and Astrophysics-A&A, EDP Sciences, 2021, 645, pp.A102. ⟨10.1051/0004-6361/202039006⟩
Astronomy and Astrophysics-A&A, 2021, 645, pp.A102. ⟨10.1051/0004-6361/202039006⟩
We study the effect of physics input on thermal evolution of neutron stars in soft X-ray transients (SXTs). In particular, we consider different modern models of the sources of deep crustal heating during accretion episodes and the effects brought ab
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::908476d9e45a840283598d1d83c14d07
https://hal.archives-ouvertes.fr/hal-03118171
https://hal.archives-ouvertes.fr/hal-03118171