Physics
Scientific paper
May 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006sptz.prop30854u&link_type=abstract
Spitzer Proposal ID #30854
Physics
Scientific paper
Motivated by the success of our pilot Cycle-1 observations, we here propose a systematic IRAC imaging program of powerful quasar jets. Specifically, we propose to perform: (a) moderately deep [1 hr each] IRAC imaging of 10 powerful jets to make a complete set of infrared data for quasar jets detected by Chandra, and (b) very deep [7 hr] IRAC imaging of the 3C 273 jet as a follow-up to our Cycle-1 program. By exploring the mid-infrared properties of the extended jet emission from powerful quasars, this IRAC program will shed new light on the riddle of the Chandra-detected jets. Our scientific goals are: (1) determining the peak position of the synchrotron radiation component, which is connected directly with the maximum energy of the ultrarelativistic electrons in the jets and reflects from nature of the acceleration process, (2) measuring the spectral shape in the IRAC band to test whether the optical emission is belonging to the radio-infrared synchrotron component, and (3) searching for an infrared bump due to ``bulk Comptonization'', which if detected, gives strong confirmation of the beamed IC model. Together with extensive surveys with both HST and Chandra, our Spitzer survey will aid in the understanding of the physics of the extragalactic jets.
Cheung Teddy
Coppi Paolo
Uchiyama Yasunobu
Urry Meg
van Duyne Jeffrey
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