Volume 411, Number 1, November III 2003
Special letters issue on: first science with integral
|Page(s)||L411 - L414|
|Published online||17 November 2003|
Letter to the Editor
JEM-X observations of the Be/X-ray binary EXO 2030+375*
GACE, Instituto de Ciencias de los Materiales, Universidad de Valencia, PO Box 20085, 46071 Valencia, Spain
2 Max-Planck-Institut für extraterrestrische Physik, Giessenbachstrasse, 85748 Garching, Germany
3 INTEGRAL Science Data Centre, Chemin d'Écogia 16, 1290 Versoix, Switzerland
4 Danish Space Research Institute, Juliane Maries Vej 30, 2100, Copenhagen, Denmark
Corresponding author: S. Martínez Núñez, firstname.lastname@example.org
Accepted: 1 August 2003
We have used data from the Joint European Monitor (JEM-X) to perform an X-ray spectral and timing analysis of the 42-s transient pulsar EXO 2030+375 during an X-ray outburst. X-ray pulsations are clearly detected with an average pulse period of s and an average pulse fraction of 60%. The profile of the energy spectrum did not change appreciably throughout the X-ray outburst, although the source shows a slightly softer spectrum during periastron passage in the energy range 9–25 keV. The 5–25 keV X-ray luminosity changed by a factor of 2 throughout the observations, reaching a maximum value of erg s-1. These observations allowed us to verify the in-flight instrumental properties of the JEM-X Monitor.
Key words: INTEGRAL / JEM-X / BeX stars / HMXRBs / EXO 2030+375
© ESO, 2003
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