Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000mnras.317..497b&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 317, Issue 3, pp. 497-500.
Astronomy and Astrophysics
Astronomy
7
Magnetic Fields, Radiation Mechanisms: Non-Thermal
Scientific paper
Synchrotron radiation by relativistic electrons spiralling in magnetic fields is a mainstay of radio astronomy, accounting for emissions from many objects. Conventional models assume that electrons radiate singly, so power scales with number of electrons. Yet recently jets from active galactic nuclei have shown very high luminosity, inconsistent with plausible single-particle synchrotron emission. We report experiments showing that, by stimulating plasma instabilities with relativistic electron beams, one can induce increases in the synchrotron emission by factors of ~106. Enhancement presumably arises from coherent bunching of the relativistic electrons as they spiral in an ambient magnetic field. Polarization measurements suggest that electrons radiatively cooperate on scales of ~6.6cm. Radio telescope Stokes parameters may be able to reveal such polarization effects in high-brightness sources, a new observing diagnostic.
Benford Gregory
Tzach David
No associations
LandOfFree
Coherent synchrotron emission observed: implications for radio astronomy 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 Coherent synchrotron emission observed: implications for radio astronomy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coherent synchrotron emission observed: implications for radio astronomy will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-762985