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Probing the star formation history using the redshift evolution of luminosity functions
Saumyadip Samui, Raghunathan Srianand, Kandaswamy Subramanian
We present a self-consistent, semi-analytical LCDM model of star formation and reionization. For the cosmological parameters favored by the WMAP data, our models consistently repro…
Primordial magnetic fields and CMB anisotropies
Kandaswamy Subramanian
Possible signatures of primordial magnetic fields on the Cosmic Microwave Background (CMB) temperature and polarization anisotropies are reviewed. The signals that could be searche…
Galactic dynamo and helicity losses through fountain flow
Anvar Shukurov, Dmitry Sokoloff, Kandaswamy Subramanian +1
Nonlinear behaviour of galactic dynamos is studied, allowing for magnetic helicity removal by the galactic fountain flow. A suitable advection speed is estimated, and a one-dimensi…