XTE J1946+274: The resurrection of a sleeping X-ray pulsar

Presentation duration: 15 minutes

Presenter: Sebastian Müller

We report on a series of outbursts of the transient X-ray pulsar XTE J1946+274 in the second half of 2010 after nearly one decade of quiescence. Quasi-simultaneous Swift-, RXTE-, and INTEGRAL observations allow us to study the pulse period ephemeris of the neutron star as well as the spectral parameters. We confirm the presence of a cyclotron line at about 35 keV. Using pulse arrival time analysis we determined the pulse period ephemeris of the neutron star which allows us to do pulse phase resolved spectroscopy.

Kühnel, M.,
Kreykenbohm, I.,
Wilms, J.,
Caballero, I.,
Ferrigno, C.,
Pottschmidt, K.,
Santangelo, A.,
Staubert, R.,
et al.