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Search for Gravitational Waves in the CMB After WMAP3: Foreground Confusion and The Optimal Frequency Coverage for Foreground Minimization
Alexandre Amblard, Asantha Cooray, Manoj Kaplinghat
B-modes of Cosmic Microwave Background (CMB) polarization can be created by a primordial gravitational wave background. If this background was created by Inflation, then the amplit…
Cosmological Information from Lensed CMB Power Spectra
Kendrick M. Smith, Wayne Hu, Manoj Kaplinghat
Gravitational lensing distorts the cosmic microwave background (CMB) temperature and polarization fields and encodes valuable information on distances and growth rates at intermedi…
Dark Matter Halos with Cores from Hierarchical Structure Formation
Louis E. Strigari, Manoj Kaplinghat, James S. Bullock
We show that dark matter emerging from late decays (z < 1000) produces a linear power spectrum identical to that of Cold Dark Matter (CDM) on all observationally relavant scales (>…
Big Bang Nucleosynthesis with Bound States of Long-lived Charged Particles
Manoj Kaplinghat, Arvind Rajaraman
Charged particles (X) decaying after primordial nucleosynthesis are constrained by the requirement that their decay products should not change the light element abundances drastica…
A Large Dark Matter Core in the Fornax Dwarf Spheroidal Galaxy?
Louis E. Strigari, James S. Bullock, Manoj Kaplinghat +4
We use measurements of the stellar velocity dispersion profile of the Fornax dwarf spheroidal galaxy to derive constraints on its dark matter distribution. Though the data are unab…
Stable Models of superacceleration
Manoj Kaplinghat, Arvind Rajaraman
We discuss an instability in a large class of models where dark energy is coupled to matter. In these models the mass of the scalar field is much larger than the expansion rate of…