Frequency Resolved Spectroscopy of EXO 0748-676 in Persistent Emission

Details Frequency Resolved Spectroscopy of EXO 0748-676 in Persistent Emission Frequency Resolved Spectroscopy of EXO 0748-676 in Persistent Emission

Jun 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009atel.2097....1b&link_type=abstract

The Astronomer's Telegram, #2097

Astronomy and Astrophysics

Astronomy

5

X-Ray, Binaries, Neutron Stars, Transients

Scientific paper

I report on the frequency resolved spectroscopy (FRS) of the low- mass X-ray binary EXO 0748-676, using data taken with the EPIC PN (timing or imaging mode) data on the XMM-Newton Observatory. The frequency resolved spectra in a low state (Lx about 1.2e36 erg/s) show that the spectra are frequency independent and best described by a simple power-law with a iron line at about 5 keV. The vicinity of the 45 Hz signal reported in bursts from this source by Villarreal & Strohmayer (2004, ApJL 614, L121) shows the above spectra during persistent emission.

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