Computer Science – Databases
Scientific paper
Apr 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005xrrc.proce7.21s&link_type=abstract
"X-Ray and Radio Connections (eds. L.O. Sjouwerman and K.K Dyer) Published electronically by NRAO, http://www.aoc.nrao.edu/event
Computer Science
Databases
X-Ray, Radio, Dissipation Of Jets
Scientific paper
We intend to go through the Very Large Array, Hubble Space Telescope, and Chandra X-ray Observatory databases, among others, to scrutinize more closely observations made of extragalactic jets. Accordingly, we have constructed our own database of extragalactic jets, those that have been observed in the radio and either optical or X-ray wavebands. The purpose of studying jets at widely spaced frequencies with this database as an analytic tool is several-fold. First, by developing correlations among various emission characteristics, one can further delineate the FRI/FRII dichotomy. Indeed, we have already found that there is a strong correlation between the inverse Compton process and FRII jets. Secondly, we can use this database to identify X-ray and optical candidates for further study with HST, and Chandra. Thirdly, we can identify and further process archival data from the VLA, HST, and Chandra databases for many of these objects. We did just this with an HST archival image of 4C30.31, with the result of uncovering a heretofore unknown double optical jet corresponding to the radio jets already well known. Finally, we can identify optical candidates for searches with ground-based telescopes, to look for counterparts to radio and X-ray jets. Again, as proof of concept, we did this for three sources, the result being that one and possibly a second show some optical extension corresponding to a jet. Therefore, the use of such high resolution databases is critical in furthering the understanding of extragalactic jets, and is of invaluable assistance in performing this study.
Rimmer Paul B.
Sadun Alberto C.
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