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Browsing by Subject "Cosmic microwave background"

Browsing by Subject "Cosmic microwave background"

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  • Application of the contour Minkowski tensor and D statistic to the Planck E -mode data 
    Joby, P. K; Sen, Aparajita; Ghosh, Tuhin; Pravabati, C; Basak, Soumen (American Physical Society, 2021-06-15)
    We test the statistical isotropy (SI) of the E -mode polarization of the cosmic microwave background (CMB) radiation observed by the Planck satellite using two statistics, namely, the α estimator that is derived ...
  • Constraining cosmological parameters through Sunyaev-Zel'dovich surveys 
    Majumdar, S; Subrahmanyan, R (Indian Academy Of Sciences, 1999-12)
    For cold dark matter models, images of temperature fluctuations in the cosmic microwave background (CMB), due to Sunyaev Zel'dovich (SZ) effect have been been simulated taking a cosmological distribution of clusters into ...
  • Constraints on structure formation models from the Sunyaev-Zel'dovich effect 
    Majumdar, S; Subrahmanyan, R (Royal Astronomical Society, 2000-03)
    In the context of cold dark matter (CDM) cosmological models, we have simulated images of the brightness temperature fluctuations in the cosmic microwave background (CMB) sky owing to the Sunyaev–Zel'dovich (S–Z) effect ...
  • Physics of Supermassive Disks: Formation and Collapse 
    Mangalam, A (Astronomical Society of India, 2003)
    Supermassive disks are thought to be precursors of supermassive black holes that are believed to power quasars and exist at centers of galaxies. Formation scenarios of such disks are reviewed and it is argued that gas ...

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