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Islamabad, Pakistan

Institute of Space Technology, also known as IST, is a chartered degree-awarding university located in Islamabad, Pakistan. It was established in 2002 under the auspices of the Pakistan National Space Agency. IST offers undergraduate and postgraduate education, and produces scientists and engineers in the field of Space Technology.It is one of the leading university of the Pakistan.In short span of time,It has achieved a lot of success in the field of science and research and Engineering. Its mechanical Engineering is one of the best in Pakistan.The university is determined to expand the public's awareness in the field of space and space technology. IST also bears the title of being the only institute of its kind in the entire Muslim World. Wikipedia.

Zhekov S.A.,Institute of Space Technology
Monthly Notices of the Royal Astronomical Society

We present an analysis of the XMM-Newton observation of the wind-blown bubble NGC 2359. This is the first detection of this object in X-rays. The X-ray emission of NGC 2359 is soft and originates from a thermal plasma with a typical temperature of kT ~ 0.2 keV. A direct comparison between the one-dimensional hydrodynamic model of wind-blown bubbles and the X-ray spectrum of NGC 2359 suggests a reduced mass-loss rate of the central star in order to provide the correct value of the observed flux. The central star of the nebula, WR 7, is an X-ray source. Its emission is similar to that of other presumably single Wolf-Rayet stars detected in X-rays. The WR 7 spectrum is well represented by the emission from a two-temperature plasma with a cool component of kT ~ 0.6 keV and a hot component of kT ~ 2.7 keV. © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. Source

Ikhsanov N.R.,Russian Academy of Sciences | Finger M.H.,Institute of Space Technology | Finger M.H.,National Space Science and Technology Center
Astrophysical Journal

Observations of the cyclotron resonance scattering feature in the X-ray spectrum of GX301-2 suggest that the surface field of the neutron star is B CRSF ∼ 4 × 1012G. The same value has been derived in modeling the rapid spin-up episodes in terms of the Keplerian disk accretion scenario. However, the spin-down rate observed during the spin-down trends significantly exceeds the value expected in currently used spin-evolution scenarios. This indicates that either the surface field of the star exceeds 50 B CRSF or a currently used accretion scenario is incomplete. We show that the above discrepancy can be avoided if the accreting material is magnetized. The magnetic pressure in the accretion flow increases more rapidly than its ram pressure and, under certain conditions, significantly affects the accretion picture. The spin-down torque applied to the neutron star in this case is larger than that evaluated within a non-magnetized accretion scenario. We find that the observed spin evolution of the pulsar can be explained in terms of the magnetically controlled accretion flow scenario provided the surface field of the neutron star isB CRSF. © 2012. The American Astronomical Society. All rights reserved. Source

Samimi H.,Institute of Space Technology | Uysal M.,Istanbul University
Journal of Optical Communications and Networking

In this paper, we consider a heterogenous scenario where free-space optical (FSO) and radio-frequency (RF) technologies are deployed together as a dual-hop communication system, and we investigate the end-to-end outage performance of this so-called mixed RF/FSO system. The RF and FSO links are, respectively, modeled as Rayleigh fading (due to multipath propagation) and M-distributed fading (due to atmospheric turbulence). We derive exact closed-form expressions for the outage probability and demonstrate that the existing outage results in the literature for mixed FSO systems can be obtained as special cases of our results. The effect of pointing errors in the FSO link is further investigated. © 2009-2012 OSA. Source

Tolias P.,Institute of Space Technology
New Journal of Physics

A kinetic model of partially ionized complex plasmas is employed for the numerical analysis of low-frequency longitudinal modes for typical laboratory plasmas. The approach self-consistently includes the effects of plasma particle absorption on dust, collisions with neutrals and electron impact ionization. In addition to the typical dust acoustic mode, the results reveal the existence of a novel long-wavelength mode, attributed to the interplay between the mechanisms of plasma production and loss. The main properties of mode dispersions are investigated through their dependence on plasma and dust parameters. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. Source

Jamal S.Z.,Institute of Space Technology
IEEE Aerospace and Electronic Systems Magazine

The developed test bench of tightly coupled GPS/INS integrated navigation system for an airborne vehicle was analyzed herein. From the obtained result, the performance of developed integrated navigation and workflow of the scheme is found correct. Particular attention was focused on the ability of the navigation filter to identify and remove the IMU errors. Along the UAV trajectory the performance of integrated navigation is found to be consistent. Velocity corrections exhibited to be somewhat inefficient, however in the medium accuracy IMU and low-grade GPS, the measurement did not permit the desired level of accuracy. Future work for solving the above-mentioned problems to further improve the performance of integrated navigation is required. © 2012 IEEE. Source

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