2–6 Dec 2019
Australia/Sydney timezone

Radiative Signatures of Relativistic Reconnection in Blazar Jets

5 Dec 2019, 15:05
15m
Physics LT 1

Physics LT 1

Oral Gamma rays Parallel

Speaker

Dr Ian Christie (Northwestern University (CIERA))

Description

Relativistic magnetic reconnection, a process which converts magnetic energy to particle acceleration, is an ideal mechanism for the multi-wavelength spectral and temporal variability observed in blazar jets. By coupling recent two-dimensional particle-in-cell simulations of relativistic reconnection with a time-dependent radiative transfer model, we compute the non-thermal emission from a chain of plasmoids, namely quasi-spherical blobs of plasma containing relativistic particles and magnetic fields formed during a reconnection event. Here, I will show that our derived photon spectra display characteristic features observed in both BL Lac sources and flat spectrum radio quasars. A differentiation in modeling the two subclasses is achieved by varying the strength of the photon fields external to the jet, the jet magnetization, and the number of electron-positron pairs per proton contained within. Additionally, I will present several observational signatures of our model including the statistical properties of plasmoid-powered flares, the correlation of flaring events in multi-wavelength bands, and the power-spectral density of our reconnection driven light curves.

Primary authors

Dr Ian Christie (Northwestern University (CIERA)) Dr Maria Petropoulou (Princeton University) Prof. Lorenzo Sironi (Columbia University) Prof. Dimitrios Giannios (Purdue University)

Presentation materials