RXTE confirms cyclotron line near 50 keV for A 0535+26

Details RXTE confirms cyclotron line near 50 keV for A 0535+26 RXTE confirms cyclotron line near 50 keV for A 0535+26

Sep 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005atel..605....1w&link_type=abstract

The Astronomer's Telegram, #605

Astronomy and Astrophysics

Astronomy

7

X-Ray, Gamma Ray, Binaries, Neutron Stars, Pulsars, Transients

Scientific paper

The cyclotron feature near 50 keV in the spectrum of A 0535+26 measured with Integral (Atel #601) is visible in the count rate spectra of RXTE/HEXTE data from the current outburst. The feature is significant at the 17 sigma level in the 2.7-150 keV PCA/HEXTE energy spectrum from observations on August 28 between 13:55 and 14:54 UT. Using a MPLCUT (Coburn et. al. 2002, ApJ, 580, 394) continuum model and a Gaussian absorption line model for the cyclotron feature, we find the following line parameters: centroid energy 48.5+-0.7 keV, sigma 5.9+0.5-0.9 keV, and depth 0.75+-0.07.

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