Intergalactic Magnetic Fields from Quasar Outflows

  title={Intergalactic Magnetic Fields from Quasar Outflows},
  author={Steven R. Furlanetto and Abraham Loeb},
Outflows from quasars inevitably pollute the intergalactic medium (IGM) with magnetic fields. The short-lived activity of a quasar leaves behind an expanding magnetized bubble in the IGM. We model the expansion of the remnant quasar bubbles and calculate their distribution as a function of size and magnetic field strength at different redshifts. We generically find that by a redshift z ∼ 3, about 5–20% of the IGM volume is filled by magnetic fields with an energy density ∼> 10% of the mean… CONTINUE READING
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