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H.L. Marshall (MIT KIASR), S. Jester (Fermilab), D.E. Harris (SAO)
We present results from four recent Chandra monitoring observations of the jet in 3C273, obtained between November 2003 and July 2004. The exposure times range from 37.5 ks to 41.3 ks, so each observation provides very good signal for the brightest jet features; in particular, there are 500-1500 counts in knots A1 and B2 and over 100 counts in other knots. Comparison with archival data from June 2000 shows mildly significant changes in the flux of several parts of the jet. The variability is non-uniform in position and energy. We will present results of a more detailed determination of flux and spectral variability. Combining all the data provides new details of the X-ray morphology for detailed comparison with radio and optical images. SJ was supported in part by the U.S. Department of Energy under contract No. DE-AC02-76CH03000. HLM was supported by the Smithsonian Astrophysical Observatory (SAO) contract SV3-73016 for the Chandra X-Ray Center (CXC). DEH is partially supported by NASA contract NAS8-39073.
The author(s) of this abstract have provided an email address for comments about the abstract: hermanm@space.mit.edu
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Bulletin of the American Astronomical Society, 36 5
© 2004. The American Astronomical Society.