Tracing the Remnants of Powerful Quasars to Probe the IGM

Details Tracing the Remnants of Powerful Quasars to Probe the IGM Tracing the Remnants of Powerful Quasars to Probe the IGM

2001-12-17

arxiv.org/abs/astro-ph/0112386v1

Astronomy and Astrophysics

Astrophysics

6 pages, 4 figures, to appear in the Proceedings of 'Lighthouses of the Universe' Garching 2001

Scientific paper

10.1007/10856495_76

Powerful quasars and radio galaxies are injecting large amounts of energy in the form of radio plasma into the inter-galactic medium (IGM). Once this nonthermal component of the IGM has radiatively cooled the remaining radio emission is difficult to detect. Two scenarios in which the fossil radio plasma can be detected and thus be used to probe the IGM are discussed: a) re-illumination of the radio emission due to the compression in large-scale shock waves, and b) inverse Compton scattered radiation of the cosmic microwave background (CMB), cosmic radio background (CRB), and the internal very low frequency synchrotron emission of the still relativistic low energy electron population. We present 3-D magneto-hydrodynamical simulations of scenario a) and compare them to existing observations. Finally, we discuss the feasibility of the detection of process b) with upcoming instruments.

Affiliated with

Also associated with

No associations

Rating

Tracing the Remnants of Powerful Quasars to Probe the IGM does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Tracing the Remnants of Powerful Quasars to Probe the IGM, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tracing the Remnants of Powerful Quasars to Probe the IGM will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-261163