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1. Models with a Step-Like Initial Power Spectrum

   We investigate the properties of clusters of galaxies in the $\Lambda$...

   Mirt Gramann, Gert Hütsi in Mining the Sky

   Conference paper
   

2. Power Spectrum for the Distribution of Galaxies on the Sphere

   A method of Gorski of calculation of the power spectrum for CMB for incomplete COBE data set is applied to the distribution of galaxies on the...

   Włodzimierz Godłowski, Magdalena Pietka, ... Marek Szydłowski in Toward an International Virtual Observatory

   Conference paper
   

3. Development of a new power spectrum of refractive-index fluctuations for ocean turbulence

   We develop a new power spectrum of the refractive-index fluctuations turbulent oceanic based on the marine atmospheric spectrum developed in the...

   S. Chib, F. Khannous, A. Belafhal in Optical and Quantum Electronics

   Article 23 July 2023

4. Cosmological Constraint from QSO Spatial Power Spectrum

   In this paper we consider constraints on the cosmological density parameters from the spatial power spectrum of QSOs. We first review an analytic...

   Kazuhiro Yamamoto in Lighthouses of the Universe: The Most Luminous Celestial Objects and Their Use for Cosmology

   Conference paper
   

5. 21-cm power spectrum in interacting cubic Galileon model

   Bikash R. Dinda, Md. Wali Hossain, Anjan A. Sen in Journal of Astrophysics and Astronomy

   Article 03 October 2023
   

6. Energy cascade in a far-from-equilibrium inhomogeneous trapped Bose gas obtained by power spectrum analysis

   We characterize the energy spectrum in far-from-equilibrium inhomogeneously trapped Bose-Einstein condensate using the power spectrum technique. We...

   Franklin J. Vivanco, Amilson R. Fritsch, ... Vanderlei S. Bagnato in The European Physical Journal Special Topics

   Article 04 September 2023
   

7. Contributions of p-adic power spectrum to chaos

   In this paper, we define the p -adic fluorescence spectrum and discuss the possibility of measuring it. The main idea is that, according to...

   Octavian Postavaru in The European Physical Journal Plus

   Article 17 July 2023
   

8. Post-reionization 21-cm power spectrum for bimetric gravity and its detectability with SKA1-mid telescope

   We considered a modified gravity theory through a special kind of ghost-free bimetric gravity, where one massive spin-2 field interacts with a...

   Ajay Bassi, Bikash R. Dinda, Anjan A. Sen in Journal of Astrophysics and Astronomy

   Article 20 November 2023
   

9. Imprints of anisotropy on the power spectrum in matter dominated bouncing universe as background

   In this paper, we aim to investigate the effects of the anisotropy on the scale-invariant power spectrum considering the matter-dominated collapsing...

   Asha B. Modan, Sukanta Panda, Arun Rana in The European Physical Journal C

   Article Open access 08 October 2022
   

10. On the Power Spectrum of Gamma Ray Bursts

    Gamma ray bursts are known to have rapid time variation less than 64 milli-sec. The average of their power spectrum density (PSD) shows power law of...

    Motoko Suzuki, Masahiro Morikawa, Izumi Joichi in Lighthouses of the Universe: The Most Luminous Celestial Objects and Their Use for Cosmology

    Conference paper
    

11. Method for Comparison Testing of Parametric Power Spectrum Estimates: Spectral Analysis Via Time Series Synthesis

    The task of comparison testing of time series power spectrum parametric estimates is considered. It is shown that an urgent problem that arises in...

    V. V. Savchenko in Measurement Techniques

    Article 01 September 2023
    

12. LMD and Lomb–Scargle power spectrum variability analysis of quasars

    The observation of celestial light variation data is discontinuous and uneven in the time domain due to weather, equipment, and other factors. And...

    Jian-hua Cai, Jiang-he Yang, ... Jun-hui Fan in Astrophysics and Space Science

    Article 29 September 2022
    

13. Fine and Rough Structures of the Frequency Spectrum of a High-Power Laser Diodes during Slow Degradation

    Abstract

    It is shown that fine and rough structures can be differentiated in the radiation spectrum of a powerful laser diode. The relationship...

    V. V. Bliznyuk, V. A. Parshin, ... A. E. Tarasov in Bulletin of the Russian Academy of Sciences: Physics

    Article 01 January 2024
    

14. High Frequencies in Power Spectrum of Gamma-Ray Bursts

    Power spectra of Gamma-Ray Burst(GRB) were investigated in the frequency range 0.01 - 500 Hz using BATSE data. Significant variability was found on...

    Alexei Pozanenko, Vladimir Loznikov in Lighthouses of the Universe: The Most Luminous Celestial Objects and Their Use for Cosmology

    Conference paper
    

15. Reconstruction of power spectrum of primordial curvature perturbations on small scales from primordial black hole binaries scenario of LIGO/VIRGO detection

    As a candidate bound for the Binary Black Hole (BBH) merger events detected by LIGO/Virgo, Primordial Black Holes (PBHs) provide a useful tool to...

    **npeng Wang, Ying-li Zhang, ... Masahide Yamaguchi in Science China Physics, Mechanics & Astronomy

    Article 15 March 2023

16. About the Power Spectrum Of Primordial Gravitational Waves

    The primordial gravitational waves ( PGW ) have been generated by inflationary amplification of the primordial (quantum) fluctuations. It is true that...

    Taimur Mohammadi, Behrooz Malekolkalami, Khabat Ghamari in International Journal of Theoretical Physics

    Article 05 February 2022
    

17. Power spectrum analysis of time-delayed optoelectronic oscillators with wide and narrow band nonlinear filters

    In this paper, we use the fourth-order Runge–Kutta and fast Fourier transform-based spectral analysis to study the power spectrum of the phenomena of...

    René Mboyo Kouayep, Jimmi Hervé Talla Mbé, Paul Woafo in Optical and Quantum Electronics

    Article 11 December 2022
    

18. BB mode angular power spectrum of CMB from massive gravity

    The BB-mode correlation angular power spectrum of the cosmic microwave background is studied for primordial massive gravitational waves for several...

    N. Malsawmtluangi, P. K. Suresh in Astrophysics and Space Science

    Article 24 November 2021
    

19. Level correlations of CMB temperature angular power spectrum

    If the principle of statistical isotropy is valid, then the angular power spectrum (APS) of cosmic microwave background (CMB) radiation is...

    Md Ishaque Khan, Rajib Saha in Journal of Astrophysics and Astronomy

    Article 19 December 2022
    

20. Large power spectrum and primordial black holes in the effective theory of inflation

    We study the generation of a large power spectrum, necessary for primordial black hole formation, within the effective theory of single-field...

    Guillermo Ballesteros, Sebastián Céspedes, Luca Santoni in Journal of High Energy Physics

    Article Open access 14 January 2022