Astrophysics research at Columbia essentially spans the entire observable electromagnetic spectrum: gamma-ray (Elena Aprile, Chuck Hailey, Reshmi Mukherjee), X-ray (Chuck Hailey, David Helfand), optical (Arlin Crotts, Jules Halpern, Laura Kay, Joe Patterson), radio (David Helfand, Jacqueline van Gorkum), and microwave (Amber Miller).
Astronomical systems of interest include: cataclysmic variables, neutron stars, black holes, galactic nuclei, gamma-ray bursts, quasars, galaxies, supernovae, the intergalactic medium, the cosmic microwave background, as well as the large-scale structure of the universe.
Searches for dark matter weakly interacting massive particles (WIMPs), both with an underground direct detection experiment (Elena Aprile) and with a space-based experiment (Chuck Hailey), are also part of the research program in particle astrophysics at Columbia.
There is also strong interaction between the experimental/observational program and the theoretical program. Please refer to the theory page and the astronomy department home page for further details.