Other
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21722304m&link_type=abstract
American Astronomical Society, AAS Meeting #217, #223.04; Bulletin of the American Astronomical Society, Vol. 43, 2011
Other
Scientific paper
The richly detailed X-ray and gamma-ray light curves provided by RXTE, the Fermi LAT, and Cherenkov telescopes have the potential of greatly enhancing our understanding of high-energy phenomena in the relativistic jets of blazars. In order to translate the time domain into 3-D pictures of jets, though, we need the ultra-high angular resolution of the VLBA and global VLBI at millimeter wavelengths. We can correlate changes in VLBA images with outbursts and quiet periods in the gamma-ray and X-ray light curves and use the time delays - or lack thereof - to locate the high-energy emission relative to the bright, stationary feature in the images referred to as the "core."
The polarization capabilities of the VLBA allow direction comparison of variations in optical and near-IR polarization with those seen in features appearing in the mm-wave images. In many cases, close correlation between the optical/near-IR and high-energy light curves provides another way to associate the emission at all wavebands with the core or other stationary emission features, and superluminal knots. In addition, the polarization and its variations inform us on the magnetic field configuration. The presentation will show examples of how this combination of the VLBA and space-borne as well as ground-based telescopes is enlightening us on the origin and behavior of relativistic jets.
The research reported in the presentation is supported by NASA grants NNX08AJ64G, NNX08AJ61G, NNX08AV65G, NNX08AW56G, NNX09AR11G, NNX09AT99G, and NNX10AL13G, and NSF grant AST-0907893.
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