Kiloparsec-Scale Jets in Nearby Galaxies as Possible Sources of High Energy γ-ray Emission

Details Kiloparsec-Scale Jets in Nearby Galaxies as Possible Sources of High Energy γ-ray Emission Kiloparsec-Scale Jets in Nearby Galaxies as Possible Sources of High Energy γ-ray Emission

Feb 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aipc..745..545s&link_type=abstract

HIGH ENERGY GAMMA-RAY ASTRONOMY: 2nd International Symposium on High Energy Gamma-Ray Astronomy. AIP Conference Proceedings, Vo

Astronomy and Astrophysics

Astronomy

Radio Galaxies, Elliptical Galaxies, Gamma-Ray Sources, Gamma-Ray Bursts, Jets And Bursts, Galactic Winds And Fountains

Scientific paper

Several low-power kiloparsec-scale jets in nearby radio galaxies are known for their synchrotron radiation extending up to optical and X-ray photon energies. Here we comment on the high-energy γ-ray emission of such objects, resulting from comptonization of the starlight photon field of the host galaxies by the synchrotron-emitting jet electrons. Particular case of radio galaxy M 87 is analysed in more details, including relativistic bulk velocity of the jet as well as the Klein-Nishina effects. We show, that present upper limits for such an emission imposed by Whipple observations imply that the magnetic field in the brightest knot A of M 87 jet cannot be smaller than the equipartition value. We also comment on the regular (non-active) galaxy NGC 821, for which kpc-scale jet-like feature has been recently discovered in X-rays by Chandra. We conclude, that if the interpretation of this feature as the synchrotron-emitting jet-like outflow is correct, nearby elliptical galaxies can constitute an important class of the extragalactic sources of high energy (from GeV up to TeV) γ-ray radiation detectable by the future Cherenkov Telescopes and GLAST.

Affiliated with

Also associated with

No associations

Rating

Kiloparsec-Scale Jets in Nearby Galaxies as Possible Sources of High Energy γ-ray Emission 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 Kiloparsec-Scale Jets in Nearby Galaxies as Possible Sources of High Energy γ-ray Emission, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Kiloparsec-Scale Jets in Nearby Galaxies as Possible Sources of High Energy γ-ray Emission will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1746510