4 papers
Be It Unresolved: Measuring Time Delays from Lensed Supernovae
Satadru Bag, Alex G. Kim, Eric V. Linder +1
Gravitationally lensed Type Ia supernovae may be the next frontier in cosmic probes, able to deliver independent constraints on dark energy, spatial curvature, and the Hubble const…
Studying the morphology of HI isodensity surfaces during reionization using Shapefinders and percolation analysis
Satadru Bag, Rajesh Mondal, Prakash Sarkar +3
Minkowski functionals and Shapefinders shed light on the connectedness of large-scale structure by determining its topology and morphology. We use a sophisticated code, SURFGEN2, t…
Emulating CDM-like expansion on the Phantom brane
Satadru Bag, Swagat S. Mishra, Varun Sahni
In [Schmidt PRD 80 123003 (2009)], the author suggested that dynamical dark energy (DDE) propagating on the phantom brane could mimick CDM. Schmidt went on to derive a phenomeno…
Versatile parametrization of the perturbation growth rate on the phantom brane
Alexander Viznyuk, Satadru Bag, Yuri Shtanov +1
We derive an analytical expression for the growth rate of matter density perturbations on the phantom brane (which is the normal branch of the Dvali-Gabadadze-Porrati model). This…