Astronomy and Astrophysics – Astronomy
Scientific paper
May 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003atel..159....1c&link_type=abstract
The Astronomer's Telegram, #159
Astronomy and Astrophysics
Astronomy
5
X-Ray, Pulsars, Transients
Scientific paper
We report the detection of a hard X-ray outburst of the transient X-ray pulsar GS1843+009 with the IBIS/ISGRI telescope aboard INTEGRAL. The source was detected during the May 1-11 observing run at a S/N ratio of ~20 in the 18-100 keV energy range. The preliminary measured fluxes were about 15, 10 and 10 mCrab in the 18-25, 25-50 and 50-100 keV bands, respectively. The source was below the detection limit during the INTEGRAL observations of the field performed on March 10, 22, 30 and April 5, 12, 2003 (the 3-sigma upper limits were 7, 4 and 5 mCrab in the same energy bands, respectively).
Cherepashchuk Anatol M.
Foschini Luca
Grebenev Sergei
Molkov Sergei
Orlandini Mauro
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