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3A 0535+262 in outburst
P. Kretschmar, K. Pottschmidt, C. Ferrigno +10
The Be/X-ray binary 3A 0535+262 has the highest magnetic field determined by cyclotron line studies of all accreting X-ray pulsars, despite an open debate if the fundamental line w…
RXTE Discovery of Multiple Cyclotron Lines during the 2004 December Outburst of V0332+53
K. Pottschmidt, I. Kreykenbohm, J. Wilms +6
We present an analysis of the 2-150 keV spectrum of the transient X-ray pulsar V0332+53 taken with the Rossi X-Ray Timing Explorer (RXTE) in 2004 December. We report on the detecti…
Observation of V0332+53 over the 2004/2005 outburst with Integral
I. Kreykenbohm, N. Mowlavi, K. Pottschmidt +8
We present the spectral and temporal analysis of the 2004/2005 outburst of the transient X-ray pulsar V0332+53 as observed with Integral. After the discovery of the third cyclotron…
Gamma-Ray Polarimetry of Two X-Class Solar Flares
Steven E. Boggs, W. Coburn, E. Kalemci
We have performed the first polarimetry of solar flare emission at gamma-ray energies (0.2-1 MeV). These observations were performed with the Reuven Ramaty High Energy Solar Spectr…
INTEGRAL observations of V0332+53 in outburst
I. Kreykenbohm, N. Mowlavi, N. Produit +9
We present the analysis of a 100ksec Integral(3-100kev) observation of the transient X-ray pulsar V0332+53 inoutburst. The source is pulsating at P=4.3751+/-0.0002s with a clear do…
Discovery of a Transition to Global Spin-up in EXO 2030+375
Colleen A. Wilson, Juan Fabregat, Wayne Coburn
EXO 2030+375, a 42-second transient X-ray pulsar with a Be star companion, has been observed to undergo an outburst at nearly every periastron passage for the last 13.5 years. From…