KICP seminar: Cyril Creque-Sarbinowski (Flatiron Institute)

11:00 am–12:00 pm ERC 401

Cyril Creque-Sarbinowski (Flatiron Institute) "Cosmic Magnetic Shear of Blazars"

I will show that the presence of a stochastic intergalactic magnetic field in the Universe induces correlated quadrupolar distortions on the gamma-ray images of blazars in the sky. Using an E- and B-mode decomposition, I will then quantify the strength of the two-point signal and show that it is detectable with current Fermi-LAT data. Such a decomposition also allows one to distinguish parity-even and -odd magnetic fields. I will also comment on the relation of this technique to other blazar-based methods of probing intergalactic magnetic fields.

Event Type

Seminars

Jan 11