Physics
Scientific paper
May 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006sptz.prop30702t&link_type=abstract
Spitzer Proposal ID #30702
Physics
Scientific paper
While Galactic and extra-galactic accreting black holes can emit powerful, collimated jets, the mechanism for jet production as well as many of the basic properties of jets remain unknown. An important development in the study of Galactic black hole X-ray binaries is the discovery that these systems produce ``compact'' jets that remain steady for time periods of weeks with powers that are significant when compared to the overall energetics of the system. Compact jet spectra rise with frequency in the radio band, and, although they have not been well-studied in the far-infrared (FIR), spectral fits to radio and near-infrared (NIR) fluxes suggest that they are often brightest in the FIR. We propose a continuation of our previously approved Target of Opportunity (TOO) Spitzer program to observe black holes at times when they are producing compact jets. We are asking for two TOO triggers, and our program, which uses all three Spitzer instruments, requires nearly 7 hours of mission time per trigger (including all overheads). When combined with simultaneous or near-simultaneous X-ray and ground-based observations in the radio, near-IR, and optical, our program will provide unprecedented multi-wavelength coverage of the compact jet phenomenon in these systems. We plan to use the multi-wavelength spectra along with a theoretical model that accounts for emission from the accretion disk as well as the jet to distinguish between possible emission mechanisms and to constrain the physical properties of the jet.
Bailyn Charles
Buxton Michelle
Corbel Stephane
Fender Rob
Kaaret Philip
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