Zobrazeno 1 - 10
of 115
pro vyhledávání: '"Shternin, P S"'
Numerous models of neutron star (NS) equation of state (EoS) exist based on different superdense-matter physics approaches. Nevertheless, some NS properties show universal (EoS-independent) relations. Here, we propose a novel class of such universali
Externí odkaz:
http://arxiv.org/abs/2404.17647
Publikováno v:
Astron. Lett. 49, 567-574 (2023)
We propose a universal approximation of the equation of state of superdense matter in neutron star (NS) interiors. It contains only two parameters, the pressure and the density at the center of the maximally massive neutron star. We demonstrate the v
Externí odkaz:
http://arxiv.org/abs/2310.16847
Publikováno v:
MNRAS 518, 2775 (2023)
Analysis of Chandra observations of the neutron star (NS) in the centre of the Cassiopeia A supernova remnant taken in the subarray (FAINT) mode of the ACIS detector performed by Posselt and collaborators revealed, after inclusion of the most recent
Externí odkaz:
http://arxiv.org/abs/2211.02526
Autor:
Schatz, H., Meisel, Z., Brown, E. F., Gupta, S. S., Hitt, G. W., Hix, W. R., Jain, R., Lau, R., Möller, P., Ong, W. -J., Shternin, P. S., Xu, Y., Wiescher, M.
Nuclear reactions heat and cool the crust of accreting neutron stars and need to be understood to interpret observations of X-ray bursts and of long-term cooling in transiently accreting systems. It was recently suggested that previously neglected ne
Externí odkaz:
http://arxiv.org/abs/2112.11544
Autor:
Ho, Wynn C. G., Zhao, Yue, Heinke, Craig O., Kaplan, D. L., Shternin, Peter S., Wijngaarden, M. J. P.
Publikováno v:
Mon. Not. R. Astron. Soc. 506, 5015-5029 (2021)
We present analysis of multiple Chandra and XMM-Newton spectra, separated by 9-19 years, of four of the youngest central compact objects (CCOs) with ages < 2500 yr: CXOU J232327.9+584842 (Cassiopeia A), CXOU J160103.1-513353 (G330.2+1.0), 1WGA J1713.
Externí odkaz:
http://arxiv.org/abs/2107.08060
Autor:
Shternin, Peter S., Ofengeim, Dmitry D., Ho, Wynn C. G., Heinke, Craig O., Wijngaarden, M. J. P., Patnaude, Daniel J.
Publikováno v:
MNRAS 506, 709 (2021)
We present a new model-independent (applicable for a broad range of equations of state) analysis of the neutrino emissivity due to triplet neutron pairing in neutron star cores. We find that the integrated neutrino luminosity of the Cooper Pair Forma
Externí odkaz:
http://arxiv.org/abs/2106.05692
Publikováno v:
Phys. Rev. D 101, 103020 (2020)
We formulate hydrodynamic equations for nonsuperfluid multicomponent magnetized charged relativistic mixtures, taking into account chemical reactions as well as viscosity, diffusion, thermodiffusion, and thermal conductivity effects. The resulting eq
Externí odkaz:
http://arxiv.org/abs/2006.09840
We investigate a contribution of the Jeans smoothing to the minimal width of Ly$\alpha$ forest lines and discuss how the accounting for this additional broadening affects the inferred parameters of the intergalactic matter equation of state. We estim
Externí odkaz:
http://arxiv.org/abs/1911.03413
We present a new method to infer parameters of the temperature-density relation in the intergalactic medium in the post-reionization epoch at $z\sim 2-4$. This method is based on the analysis of the Ly$\alpha$ absorbers distribution over column densi
Externí odkaz:
http://arxiv.org/abs/1910.13184
Publikováno v:
Physics Letters B 786, 28-34 (2018)
We calculate modified Urca neutrino emission rates in the dense nuclear matter in neutron star cores. We find that these rates are strongly enhanced in the beta-stable matter in regions of the core close to the direct Urca process threshold. This enh
Externí odkaz:
http://arxiv.org/abs/1807.06569