Amir Hajian's Homepage

I am a cosmologist. My main research interest is the Cosmic Microwave Background radiation. I am a member of the Atacama Cosmology Telescope (ACT) collaboration. Over the last few years I have worked on a number of projects including the search for the shape of the universe, testing global isotropy of the universe using data from WMAP satellite, testing modified theories of gravity and dark energy, developing new algorithms for power spectrum estimation and efficient methods for parameter estimation in cosmology.

Currently I am a postdoctoral fellow at CITA. I spent four years at Princeton University as a research physicist. I did my PhD at IUCAA, my Master's at IASBS and undergraduate at Sharif University.

BBC: Bangs big and small in cosmic origins debate
A radical idea about the origins of the Universe is being debated at unusual speed, in unusually plain view - but should journalists keep out? More...

National Geographic: Space Circles Are Proof of a Pre-Big Bang Universe?
Recycled-universe theory "works on paper," but details missing, critics say. More...

ScienceNews: Cosmic reincarnation idea may be dead
A startling claim that the cosmos existed before the Big Bang doesn't appear to be supported by detailed analyses, three independent teams of scientists have concluded. More...

Nature News: No evidence of time before Big Bang
Latest research deflates the idea that the Universe cycles for eternity. More...

Are there echoes from the pre-Big Bang Universe?
A search for Low Variance Circles in the CMB Sky. More...

Going round in circles
In contradiction to most cosmologists’ opinions, two scientists have found evidence that the universe may have existed for ever. More...

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Last updated December 2010.