Volume 2, Issue 2

 

ارسال های اخیر

  • Gott-Kaiser-Stebbins (GKS) effect in an accelerated expanding universe 

    Rokni, S. Y.؛ Razmi, Habibollah؛ Bordbar, Mohammad (Damghan University Astronomical Society of Iranدانشگاه دامغان, 2015-12-01)
    Wewanttofindthecosmologicalconstantinfluenceoncosmicmicrowavebackground(CMB)temperatureduetomovinglinearcosmicstrings.Usingthespace-timemetricofalinearcosmicstringinanacceleratedexpandinguniverse,theGott-Kaiser Stebbins(GK ...

  • Effects of shear and bulk viscosity on head-on collision of localized waves in high density compact stars 

    Rafiei, Azam؛ Javidan, Kurosh؛ Zomorrodian, Mohammad Ebrahim (Damghan University Astronomical Society of Iranدانشگاه دامغان, 2015-12-01)
    Head on collision of localized waves in cold and dense hadronic matter with and without shear and bulk viscosities is investigated. Non-relativistic dynamics of propagating waves is studied using the hydrodynamics description ...

  • Scaling relations in dynamical evolution of star clusters 

    Haghi, Hosein؛ Hassani, Zahra (Damghan University Astronomical Society of Iranدانشگاه دامغان, 2015-12-01)
    We have carried out a series of small scale collisional N-body calculations of single-mass star clusters to investigate the dependence of the lifetime of star clusters on their initial parameters. Our models move through ...

  • Cosmic Walls and Filaments Formation in Modi ed Chaplygin Gas Cosmology 

    Karbasi, S.؛ Razmi, Habibollah (Damghan University Astronomical Society of Iranدانشگاه دامغان, 2015-12-01)
    We want to study the perturbation growth of an initial seed of an ellipsoidal shape in Top-Hat collapse model of the structure formation in the Modi ed Chaplygin gas cosmology. Considering reasonable values of the constants ...

  • Dynamics of entangled quantum optical system in independent media 

    Jaghouri, Hakimeh؛ Sarbishaei, Mohsen؛ Javidan, Kurosh (Damghan University Astronomical Society of Iranدانشگاه دامغان, 2015-12-01)
    We study the dynamics of two three-level atoms interacting with independent bosonic Lorentzian reservoirs at zero temperature. Such systems can be created in far astronomical objects. Quantum mechanical behaviour of these ...

  • Proper integration time of polarization signals of internetwork regions using Sunrise/IMaX data 

    Gheidi Shahran, Akram؛ Mirtorabi, Taghi (Damghan University Astronomical Society of Iranدانشگاه دامغان, 2015-12-01)
    Distribution of magnetic fields in the quiet-Sun internetwork areas has been affected by weak polarization (in particular Stokes Q and U) signals. To improve the signal-to-noise ratio (SNR) of the weak polarization signals, ...