Swift Observations of the ULX NGC 5408 X-1
Abstract
We report on the ultra-luminous X-ray (ULX) source NGC 5804 X-1 using several Swift XRT observations. These observations occurred on 2008 April 9, April 11, April 15, April 18, and April 25. Using XSPEC v11 and fitting the spectra with a power-law model in the 0.3-10.0 keV band (and freezing the absorbing column density along the line of sight at 7 E+20 cm^-2), we obtained power-law indices ranging from 1.8 +/- 0.7 to 2.4 +/- 0.4 (90 percent confidence errors).
- Publication:
-
The Astronomer's Telegram
- Pub Date:
- May 2008
- Bibcode:
- 2008ATel.1511....1M
- Keywords:
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- X-ray;
- Binaries;
- Black Holes