TY - JOUR
T1 - Probing stochastic inter-galactic magnetic fields using blazar-induced gamma ray halo morphology
AU - Duplessis, Francis
AU - Vachaspati, Tanmay
N1 - Funding Information:
We thank Kohei Kamada and Andrew Long for comments. TV is supported by the U.S. Department of Energy, Office of High Energy Physics, under Award No. DE-SC0013605 at ASUs.
Publisher Copyright:
© 2017 IOP Publishing Ltd and Sissa Medialab srl.
PY - 2017/5/2
Y1 - 2017/5/2
N2 - Inter-galactic magnetic fields can imprint their structure on the morphology of blazar-induced gamma ray halos. We show that the halo morphology arises through the interplay of the source's jet and a two-dimensional surface dictated by the magnetic field. Through extensive numerical simulations, we generate mock halos created by stochastic magnetic fields with and without helicity, and study the dependence of the halo features on the properties of the magnetic field. We propose a sharper version of the Q-statistics and demonstrate its sensitivity to the magnetic field strength, the coherence scale, and the handedness of the helicity. We also identify and explain a new feature of the Q-statistics that can further enhance its power.
AB - Inter-galactic magnetic fields can imprint their structure on the morphology of blazar-induced gamma ray halos. We show that the halo morphology arises through the interplay of the source's jet and a two-dimensional surface dictated by the magnetic field. Through extensive numerical simulations, we generate mock halos created by stochastic magnetic fields with and without helicity, and study the dependence of the halo features on the properties of the magnetic field. We propose a sharper version of the Q-statistics and demonstrate its sensitivity to the magnetic field strength, the coherence scale, and the handedness of the helicity. We also identify and explain a new feature of the Q-statistics that can further enhance its power.
KW - Extragalactic magnetic fields
KW - absorption and radiation processes
KW - cosmic magnetic fields theory
KW - magnetic fields
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U2 - 10.1088/1475-7516/2017/05/005
DO - 10.1088/1475-7516/2017/05/005
M3 - Article
AN - SCOPUS:85035237262
SN - 1475-7516
VL - 2017
JO - Journal of Cosmology and Astroparticle Physics
JF - Journal of Cosmology and Astroparticle Physics
IS - 5
M1 - 005
ER -