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Recently an Anomalous Low State in the 35d cycle of Her X-1, which is thought to be caused by the tilted accretion disk, was observed with the RXTE. This has been seen only twice before; in 1983 and again 1993. We present timing and spectral results of this latest anomalous low obtained 1999 April 26. Pulsations were observed in the 2–20 keV band but with a pulsed fraction down by a factor of 10 from the main-on. Spectral analysis indicates 70% absorbed flux (N[sub H]=7×10[sup 23]) with the remainder unabsorbed. This is consistent with continuous screening of the X-ray source by the accretion disk causing the anomalous low. © 2000 American Institute of Physics. [ABSTRACT FROM AUTHOR]

We report phase resolved spectroscopy of the transient accreting pulsar, 4U 0115+63. For the first time, more than two cylotron resonance scattering features are detected in the spectrum of an X-ray pulsar. The shape of the fundamental line appears to be complex, and this is in agreement with predictions of Monte-Carlo models. As in other pulsars, the line energies and optical depths are strong functions of pulse phase. One possible model for this is an offset of the dipole of the neutron star magnetic field. © 2000 American Institute of Physics. [ABSTRACT FROM AUTHOR]

© 2000 American Institute of Physics. [ABSTRACT FROM AUTHOR]