Zobrazeno 1 - 10
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pro vyhledávání: '"Ekşi, K. Y."'
The discovery of pulsating ultra-luminous X-ray sources (PULX) suggests that neutron stars are presumably common within the ultra-luminous X-ray source (ULX) population though the majority of the population members are currently lacking pulsations. T
Externí odkaz:
http://arxiv.org/abs/2007.08102
Young isolated neutron stars (INS) most commonly manifest themselves as rotationally powered pulsars (RPPs) which involve conventional radio pulsars as well as gamma-ray pulsars (GRPs) and rotating radio transients (RRATs). Some other young INS famil
Externí odkaz:
http://arxiv.org/abs/1904.04204
Publikováno v:
MNRAS 448, L40-L42 (2015)
The recent detection of pulsations from the ultra luminous X-ray source (ULX) NuSTAR J095551+6940.8 in M82 by Bachetti et al. indicates that the object is an accreting neutron star in a high mass X-ray binary (HMXB) system. The super-Eddington lumino
Externí odkaz:
http://arxiv.org/abs/1410.5205
Autor:
Güneydaş, A., Ekşi, K. Y.
A nascent neutron star may be exposed to fallback accretion soon after the proto-neutron star stage. This high accretion episode can submerge the magnetic field deep in the crust. The diffusion of the magnetic field back to the surface will take hund
Externí odkaz:
http://arxiv.org/abs/1207.1219
We study the structure of neutron stars in R+\beta\ R^{\mu \nu} R_{\mu \nu} gravity model with perturbative method. We obtain mass--radius relations for six representative equations of state (EoSs). We find that, for |\beta| ~ 10^11 cm^2, the results
Externí odkaz:
http://arxiv.org/abs/1112.4154
Autor:
Eksi, K. Y.
A novel procedure for the nonlinear superposition of two self-similar solutions of the heat conduction equation with power-law nonlinearity is introduced. It is shown how the boundary conditions of the superposed state conflicts with self-similarity,
Externí odkaz:
http://arxiv.org/abs/0908.3337
We show that the period clustering of anomalous X-ray pulsars (AXPs) and soft gamma-ray repeaters (SGRs), their X-ray luminosities, ages and statistics can be explained with fallback disks with large initial specific angular momentum. The disk evolut
Externí odkaz:
http://arxiv.org/abs/0907.3222
Publikováno v:
The Astrophysical Journal, 657, 441, 2007 March 1
The recent detection of the anomalous X-ray pulsar (AXP) 4U 0142+61 in the mid-infrared with the {\it Spitzer} observatory by Z.Wang and coworkers constitutes the first instance of a disk around an AXP. We show, by analyzing earlier optical and near-
Externí odkaz:
http://arxiv.org/abs/astro-ph/0606259
Publikováno v:
Astrophys.J. 623 (2005) L41-L44
Fallback disks are expected to form around new-born neutron stars following a supernova explosion. In almost all cases, the disk will pass through a propeller stage. If the neutron star is spinning rapidly (initial period $\sim 10$ ms) and has an ord
Externí odkaz:
http://arxiv.org/abs/astro-ph/0501551
Autor:
Eksi, K. Y., Alpar, M. A.
The radiation pressure of a radio pulsar does not necessarily disrupt a surrounding disk. The position of the inner radius of a thin disk around a neutron star can be estimated by comparing the electromagnetic energy density generated by the neutron
Externí odkaz:
http://arxiv.org/abs/astro-ph/0409408