34 citations · 91 across the 8 of their papers we have counts for
8 papers
Magnetically Threaded Thin Disks in the Presence of the Quadrupole Magnetic Field
Sercan Çıkıntoğlu
Neutron stars might have multipole magnetic fields as implied by recent observations of pulsars. The presence of the quadrupole field might have an effect on the interaction betwee…
Evolution of fallback discs around millisecond magnetars: effect of supercritical accretion on GRB afterglows
Sercan Çıkıntoğlu, Sinem Şaşmaz, M. Hakan Erkut +1
Some models of gamma-ray bursts (GRBs) invoke nascent millisecond magnetars as the central engine and address the X-ray afterglows with the interaction of magnetar magnetospheres w…
On the minimum spin period of accreting pulsars
Sercan Çıkıntoğlu, K. Yavuz Ekşi
The distribution of the spin frequencies of neutron stars in low-mass X-ray binaries exhibits a cut-off at 730 Hz, below the break-up frequency (mass-shedding limit) of neutron sta…
On the hysteresis effect in transitions between accretion and propeller regimes
Sercan Çıkıntoğlu, K. Yavuz Ekşi
Some observations and numerical simulations of disc-magnetosphere interaction show that accretion can proceed in the propeller regime. When the Alfvén radius is beyond the corotati…
GRMHD simulations of accreting neutron stars I: nonrotating dipoles
Sercan Çıkıntoğlu, K. Yavuz Ekşi, Luciano Rezzolla
We study the general-relativistic dynamics of matter being accreted onto and ejected by a magnetised and nonrotating neutron star. The dynamics is followed in the framework of full…
The First Day in the Life of a Magnetar: Evolution of the Inclination Angle, Magnetic Dipole Moment and Braking Index of Millisecond Magnetars During Gamma-Ray Burst Afterglows
Sinem Sasmaz Mus, Sercan Çıkıntoğlu, Ugur Aygun +2
The afterglow emission of some gamma-ray bursts (GRBs) show a shallow decay (plateau) phase implying continuous injection of energy. The source of this energy is very commonly attr…
Vacuum solutions around spherically symmetric and static objects in the Starobinsky model
Sercan Çıkıntoğlu
The vacuum solutions around a spherically symmetric and static object in the Starobinsky model are studied with a perturbative approach. The differential equations for the componen…
Inclination angle and braking index evolution of pulsars with plasma-filled magnetosphere: application to high braking index of PSR J1640-4631
Kazım Yavuz Ekşi, Ceyhun Andaç, Sercan Çıkıntoğlu +3
The recently discovered rotationally powered pulsar PSR J1640-4631 is the first to have a braking index measured, with high enough precision, that is greater than three. An incline…