National Aeronautics and Space Administration

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The Recent WR140 X-ray RXTE Lightcurve

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Click on the images above to view the RXTE WR140 lightcurve.

Processed observations through 2011-12-23.
Quicklook observations through 2009-04-15.


The last image above is an optical lightcurve kindly provided by Sergey Marchenko.
Phases are calculated according to the following ephemeris:

HJD X-ray minimum = 1985.2 + 7.9318E NOTE: Period adopted is 2 days shorter than previous best estimate (Marchenko et al. 2003)

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Schedule of RXTE observations of WR140

WR 140 wiki

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Changes

• 2004-Apr-22: The net rates are now calculated using the corrected PCU2 faint background models. See http://heasarc.gsfc.nasa.gov/docs/xte/pca_news.html for more details.
• 2007-Sep-21: The net rates are corrected for problems with gaps in the SAA history file and problems in the background model. See the report PCA SAA History and Background Problems for more details.

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Page Author: Dr. Mike Corcoran
Last modified Tue, Jan 3, 2012 7:21:04 AM