/ftp/cats/A+A/448/./L9



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J/A+A/448/L9        Position catalogue of Swift XRT afterglows (Moretti+, 2006)
The following files can be converted to FITS (extension .fit .fgz or .fiZ)
	table1.dat
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Query from: http://vizier.cds.unistra.fr/viz-bin/VizieR?-source=J/A+A/448/L9
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drwxr-xr-x 18 cats archive 325 Jan 29 2012 [Up] drwxr-xr-x 2 cats archive 216 Jan 13 2023 [TAR file] -rw-r--r-- 1 cats archive 469 Dec 19 2022 .message -r--r--r-- 1 cats archive 3686 Jun 4 2006 ReadMe -rw-r--r-- 1 cats archive 410 Sep 19 2007 +footg5.gif -rw-r--r-- 1 cats archive 3120 Mar 5 2008 +footg8.gif -r--r--r-- 1 cats archive 2448 Feb 27 2006 table1.dat [txt] [txt.gz] [fits] [fits.gz] [html]
Beginning of ReadMe : J/A+A/448/L9 Position catalogue of Swift XRT afterglows (Moretti+, 2006) ================================================================================ A refined position catalogue of the Swift XRT afterglows. Moretti A., Perri M., Capalbi M., Angelini L., Hill J.E., Campana S., Burrows D.N., Osborne J.P., Tagliaferri G., Cusumano G., Giommi P., Romano P., Mineo T., Kennea J., Morris D., Nousek J., Pagani C., Racusin J., Abbey A.F., Beardmore A.P., Godet O., Goad M.R., Page K.L., Wells A.A., Chincarini G. <Astron. Astrophys. 448, L9 (2006)> =2006A&A...448L...9M ================================================================================ ADC_Keywords: Gamma rays ; Positional data Keywords: bursts: gamma rays Abstract: We present a catalogue of refined positions of 68 gamma ray burst (GRB) afterglows observed by the Swift X-ray Telescope (XRT) from the launch up to 2005 Oct. 16. This is a result of the refinement of the XRT boresight calibration. We tested this correction by means of a systematic study of a large sample of X-ray sources observed by XRT with well established optical counterparts. We found that we can reduce the systematic error radius of the measurements by a factor of two, from 6.5 to 3.2 (90% of confidence). We corrected all the positions of the afterglows observed by XRT in the first 11 months of the Swift mission. This is particularly important for the 37 X-ray afterglows without optical counterpart. Optical follow-up of dark GRBs, in fact, will be more efficient with the use of the more accurate XRT positions.