Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007atel.1181....1s&link_type=abstract
The Astronomer's Telegram, #1181
Astronomy and Astrophysics
Astronomy
6
Optical, X-Ray, Binaries, Neutron Stars, Pulsars, Variables
Scientific paper
Variability of the optical counterpart of the 6.85 s pulsar XTE J0103-728, whose position is given in ATel #1095, has been studied. The X-ray source is coincident with MACHO 206.16768.5 and OGLE-II smc_sc9_146936. Both data sets show the source has a `swooping' lightcurve, varying over half a magnitude, with a recurrence time of ~658 days. The maximum brightness is fairly constant (I_max=14.5), while MACHO data show the depth of minima decreased over the 7.5 years of observations.
Cowley Anne Pyne
Schmidtke Paul C.
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