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How did the Big Bang happen?

Why is the universe’s expansion accelerating?

What did the first stars and galaxies look like?

In the BU Experimental Cosmology Lab, we are answering these questions by building instruments to map the sky at millimeter wavelengths. By measuring

• the Cosmic Microwave Background (CMB) – the leftover radiation from the Big Bang – and
• Distant galaxies using the Line Intensity Mapping (LIM) technique,

we can learn about the history of the universe and the fundamental physics driving its evolution.

Our instruments are deployed to telescopes at high, dry sites around the world, including the Amundsen-Scott South Pole Station. We are a part of the BU Cosmology Group and several CMB and LIM collaborations:

SPT-SLIM	BICEP
SuperSpec	CMB-S4

We are always looking for talented students and postdocs to join us! Please email Prof. Karkare with any questions.

Photo credits: Steffen Richter, Sam Harrison, Erik Shirokoff, Brad Benson