Astrophysics

I will explore the "Elusive Universe," where dark matter, neutrinos, and gravity sculpt our observed nature, leaving many open questions.
My work focuses on opening up new directions to answer these puzzles. I will present two approaches:
1) Using...

Collaborating with academics in China was once encouraged by the US government and universities. As tension between the two countries rises rapidly, those who did are under heightened scrutiny by the federal government. In 2015, I became a casualty...

Abstract: I will discuss the problem of unreasonable effectiveness of random matrix theory for description of spectral fluctuations in extended quantum lattice systems. A class of locally interacting spin systems has been recently identified where...

The Bahcall Lunch follows the astrophysics colloquium lecture. 

I will discuss recent and ongoing work focused on attempts to restore concordance amongst cosmological data sets, motivated by discrepancies amongst some inferences of the cosmic expansion rate (H_0) and the matter clustering amplitude (S_8).  I...

Abstract: When Kerr black holes rotate at their maximally allowed angular velocity, they are said to be extremal. Extremal black holes are critical solutions to Einstein’s equations of general relativity. They exhibit several interesting phenomena...