Other
Scientific paper
Jun 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005sptz.prop20496m&link_type=abstract
Spitzer Proposal ID #20496
Other
Scientific paper
We propose a series of far-IR photometric observations of 4 blazars with MIPS at three wavelengths from 24 to 160 microns. We are monitoring these objects in the X-ray with RXTE 2-3 times per week, as well as at optical, near-IR, and radio wavelengths with ground-based telescopes. The sample consists of two quasars with extremly relativistic jets (3C 279 and PKS 1510-089), a quasar with Seyfert-like optical and X-ray emission but blazar characteristics in the radio (3C~273), and BL Lac. For each object, this program will (1) fill the expansive IR gap in the time-variable spectral energy distribution, (2) determine the time scale and magnitude of far-IR flux and spectral index variability, (3) establish the relationship between the X-ray and far-IR spectral indices and how this changes with flux level and overall shape of the SED, and (4) sample the flux variability at far-IR wavelengths and measure time lags relative to fluctuations at other wavebands. This is critical information for testing models for the X-ray emission and for indicating the extent to which the IR emission is co-spatial with that in other spectral domains.
Jorstad Svetlana
Marscher Alan
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