Her X-1 X-ray turn-on monitored by RXTE

Details Her X-1 X-ray turn-on monitored by RXTE Her X-1 X-ray turn-on monitored by RXTE

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aipc..599..706k&link_type=abstract

X-RAY ASTRONOMY: Stellar Endpoints,AGN, and the Diffuse X-ray Background. Edited by Nicholas E. White, Giuseppe Malaguti, and G

Astronomy and Astrophysics

Astronomy

1

X-Ray Binaries, X-Ray Sources, X-Ray Bursts, Neutron Stars

Scientific paper

We report on a two day long continuous monitoring of the X-ray binary Her X-1 by the Rossi X-ray Timing Explorer (RXTE). The observation resulted in a complete and highly time-resolved coverage of an X-ray Turn-On in the energy range from 3 to 100 keV. The increase in flux from the off-state to the maximum level in the main on-state took almost two days. During these days a pre-eclipse dip, an anomalous dip, and an eclipse occured. The spectral modeling of the Turn-On data showed that NH is increasing during the early phases of the Turn-On. This is counterintuitive to a pure absorption model. In this paper we present a physically more realistic interpretation with a scattering model that is able to reproduce the measured data. .

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