Dynamics of the neutron star interior

Alpar, MA
This lecture summarizes the basic ideas on the dynamics of rotating superfluids in neutron stars (Section 2), and discusses the application to pulsar glitch models (Section 3). In Section 4 the anomalous braking indices of glitching pulsars are shown to agree with the model developed for the interglitch behaviour of the Vela pulsar, indicating possible universality of the dynamics of large glitches. Energy dissipation in the neutron star interior is discussed in Section 5. For an excellent general review of superfluidity and superconductivity, in the neutron star context, I refer the reader to the contribution of Sauls (1989) to the earlier NATO ASI Timing Neutron Stars.


Evolution Of Rotating Low Mass Stars With Angular-Momentum Loss
KIZILOGLU, N (1991-03-01)
The evolutionary behavior of rotating low mass stars has been investigated with angular momentum loss by the magnetic stellar wind through the pre-main sequence and on the zero age main sequence phases. As the stars contract toward the zero age main sequence, angular momentum is removed from the convective envelope under the assumption that initially only the convective envelope is spun down in low mass stars. It is obtained that most of the angular momentum loss occurs prior to reaching the zero age main s...
Determining the asymmetry in supernova explosions by studying the radial velocities of OB runaway stars
Dinçel, Baha; Yerli, Sinan Kaan; Ankay, Aşkın; Department of Physics (2012)
Understanding the asymmetry in core collapse supernova explosions is pointed out by various astrophysicists as it is the key factor in determining the observational properties of the pulsars. The initial kick given by the ex- plosion to the pulsar affects its spin period and space velocity. Up to now, although the observations do not show a direct relation between the observational features of the pulsar and its space velocity, they show a clear relation between the spin period and the magnetic field streng...
Quantitative atom-resolved force gradient imaging using noncontact atomic force microscopy
Oral, Ahmet; ÖZER, HAKAN ÖZGÜR; HOFFMANN, PM; PETHICA, JB (2001-09-17)
Quantitative force gradient images are obtained using a sub-angstrom amplitude, off-resonance lever oscillation method during scanning tunneling microscopy imaging. We report the direct observation of short-range bonds, and the measured short-range force interaction agrees well in magnitude and length scale with theoretical predictions for single bonds. Atomic resolution is shown to be associated with the presence of a prominent short-range contribution to the total force interaction. It is shown that the b...
A new approach to shutterless operation of microbolometer based infrared cameras
Çavdar, Semih; Akın, Tayfun; Department of Electrical and Electronics Engineering (2021-2-03)
This thesis presents an algorithm for the shutterless operation of microbolometer based infrared imaging systems. The active material of the microbolometer used in the thesis is vanadium oxide and it is produced in METU MEMS Center. The array size of the microbolometer is 480x640 and pixel pitch is 17 μm. The microbolometer has a CTIA type readout circuit which consists of detector and reference resistance. Voltage values are optimized at steady-state considering interactions between pixels in the focal pla...
Prioritized sequential 3D reconstruction in video sequences with multiple motions
Imre, Evren; Knorr, Sebastian; Alatan, Abdullah Aydın; Sikora, Thomas (2006-10-11)
in this study, an algorithm is proposed to solve the multi-frame structure from motion (MFSfM) problem for monocular video sequences in dynamic scenes. The algorithm uses the epipolar criterion to segment the features belonging to independently moving objects. Once the features are segmented, corresponding objects are reconstructed individually by using a sequential algorithm, which is also capable of prioritizing the frame pairs with respect to their reliability and information content, thus achieving a fa...
Citation Formats
M. Alpar, “Dynamics of the neutron star interior,” 1996, vol. 515, p. 59, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/64270.